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WOSSNER

WOSSNER

WOSSNER

Wossner Pistons and Engine Components at JJ Motorsports

Wossner is a respected name in the high-performance automotive and powersports industry, renowned for its dedication to precision engineering and quality. Established several decades ago, Wossner has continuously pushed the boundaries of engine performance, becoming a trusted partner for enthusiasts and professionals. Specializing in high-performance pistons, connecting rods, and other engine components, Wossner offers products engineered for maximum efficiency and durability, particularly for snowmobiles, motorcycles, and ATVs.

At JJ Motorsports, we offer a wide selection of Wossner products to enhance your vehicle's performance. Popular items include the Wossner Piston Kit 54.45mm Yamaha YZ125 1998-2001 8091D050, designed for reduced friction and noise, the Wossner 66.37mm Piston Kit for Arctic Cat ZRT600 1996-2000 K7032DA-2 with lightweight construction for optimal efficiency, and the Wossner Piston Kit 70.87mm Arctic Cat 2004-2006 F7 Firecat K7035DA-2 for superior durability. Other favorites are the Wossner Piston Kit 69.89 mm Arctic Cat El Tigre 6000 1984-1985 K7003DA-2 for precision fit and the Wossner Piston Kit 73.28mm Arctic Cat Cougar 1993-1998 K7005DA-2 with tight piston wall clearance.

Wossner products provide significant benefits such as enhanced engine performance, improved efficiency, reduced friction and noise, and increased durability for racing and everyday use. Key features include lightweight construction, precision engineering for specific models, advanced materials, and optimal fit to maximize power output and reliability.

  • Product
  • Qty in Cart
  • Quantity
  • Price
  • Subtotal
  • On Sale
    Wossner Piston Ring Set for Polaris 900 RMK 2005-2006 RST8400

    Wossner Piston Ring Set for Polaris 900 RMK 2005-2006 RST8400

    WOSSNER

    MSRP: $18.50
    Now: $12.00
    Was: $18.50
    If you're running a Polaris 900 RMK with Wossner pistons, a quality ring set is essential to maintaining proper combustion chamber sealing and preventing blow-by that kills power and efficiency. The...
    09120899
    SKU:
    09120899
    Availability:
    Ships Same Business Day
    Weight:
    0.10 LBS
    BORE SIZE METRIC:
    84.00 MM
    PRODUCT NAME:
    RING SET
    UNITS:
    EACH
    RIDING STYLE:
    SNOW
    MSRP: $18.50
    Now: $12.00
    Was: $18.50
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $18.50
    Now: $12.00
    Was: $18.50
    Subtotal:
  • On Sale
    Wossner Piston Ring Set for Yamaha Phazer XTX 2014-2018 770XAS-3

    Wossner Piston Ring Set for Yamaha Phazer XTX 2014-2018 770XAS-3

    WOSSNER

    MSRP: $38.50
    Now: $25.00
    Was: $38.50
    Piston rings are critical to maintaining proper engine compression, oil control, and overall cylinder sealing—especially in high-performance applications where tolerances matter. The Wossner 770XAS-3...
    09120907
    SKU:
    09120907
    Availability:
    Ships Same Business Day
    Weight:
    0.10 LBS
    BORE SIZE METRIC:
    77.00 MM
    UNITS:
    EACH
    PRODUCT NAME:
    RING SET
    RIDING STYLE:
    SNOW
    MSRP: $38.50
    Now: $25.00
    Was: $38.50
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $38.50
    Now: $25.00
    Was: $38.50
    Subtotal:
  • Wossner Piston Ring Set Yamaha YZ250F 2019-2024 RIK77.00D

    Wossner Piston Ring Set Yamaha YZ250F 2019-2024 RIK77.00D

    WOSSNER

    $48.50
    Piston rings are critical to engine longevity—they seal combustion pressure, regulate oil consumption, and maintain compression during high-RPM operation. Worn or damaged rings lead to blow-by,...
    09120755
    SKU:
    09120755
    Availability:
    Ships Same Business Day
    Weight:
    0.05 LBS
    BORE SIZE METRIC:
    77.00 MM
    PRODUCT NAME:
    PISTON RING SET
    ENGINE TYPE:
    4-STROKE
    RIDING STYLE:
    OFF-ROAD
    UNITS:
    EACH
    Qty in Cart: 0
    Quantity:
    Price:
    $48.50
    Subtotal:
  • Wossner Piston Ring Set 66mm Honda CRF150R 2007-2020 660XKS-3

    Wossner Piston Ring Set 66mm Honda CRF150R 2007-2020 660XKS-3

    WOSSNER

    $38.50
    Worn piston rings directly rob your CRF150R of compression and power—leading to blow-by, oil burning, and sluggish throttle response. The Wossner 660XKS-3 ring set restores factory-spec sealing...
    09120672
    SKU:
    09120672
    Availability:
    Ships Same Business Day
    Weight:
    0.05 LBS
    BORE SIZE METRIC:
    66.00 MM
    ENGINE TYPE:
    4-STROKE
    PRODUCT NAME:
    PISTON RING SET
    UNITS:
    EACH
    UNITS:
    SET
    RIDING STYLE:
    OFF-ROAD
    RIDING STYLE:
    STREET
    Qty in Cart: 0
    Quantity:
    Price:
    $38.50
    Subtotal:
  • Wossner Piston Ring Set Husqvarna FC250 2014-2015 RIK78.00

    Wossner Piston Ring Set Husqvarna FC250 2014-2015 RIK78.00

    WOSSNER

    $48.50
    Piston ring wear is one of the fastest ways to lose compression, power, and efficiency in a 2-stroke engine. The Wossner Piston Ring Set RIK78.00 is engineered to restore proper sealing and blow-by...
    09120692
    SKU:
    09120692
    Availability:
    Ships Same Business Day
    Weight:
    0.15 LBS
    ENGINE TYPE:
    4-STROKE
    RIDING STYLE:
    OFF-ROAD
    PRODUCT NAME:
    PISTON RING SET
    UNITS:
    EACH
    BORE SIZE METRIC:
    78.00 MM
    UNITS:
    SET
    Qty in Cart: 0
    Quantity:
    Price:
    $48.50
    Subtotal:
  • Wossner Piston Ring Set Arctic Cat Panther 440 1997-2001 RSB6500

    Wossner Piston Ring Set Arctic Cat Panther 440 1997-2001 RSB6500

    WOSSNER

    $18.50
    Worn or compromised piston rings are a direct path to poor compression, excessive blow-by, and accelerated oil consumption—issues that compound quickly under load. The Wossner Piston Ring Set RSB6500...
    09120723
    SKU:
    09120723
    Availability:
    Ships Same Business Day
    Weight:
    0.10 LBS
    PRODUCT NAME:
    RING SET
    RIDING STYLE:
    SNOW
    BORE SIZE METRIC:
    65.00 MM
    RIDING STYLE:
    ATV
    UNITS:
    EACH
    $18.50
    Qty in Cart: 0
    Quantity:
    Price:
    $18.50
    Subtotal:
  • Wossner Piston Ring Set 67.00mm Arctic Cat ZRT 600 1996-2000 RSB6700

    Wossner Piston Ring Set 67.00mm Arctic Cat ZRT 600 1996-2000 RSB6700

    WOSSNER

    $18.50
    Piston ring sets are critical to maintaining proper combustion chamber sealing and oil control—worn or damaged rings lead to blow-by, lost compression, and accelerated engine wear. The Wossner...
    09120729
    SKU:
    09120729
    Availability:
    Ships Same Business Day
    Weight:
    0.10 LBS
    UNITS:
    EACH
    RIDING STYLE:
    ATV
    BORE SIZE METRIC:
    67.00 MM
    RIDING STYLE:
    OFF-ROAD
    PRODUCT NAME:
    RING SET
    RIDING STYLE:
    SNOW
    $18.50
    Qty in Cart: 0
    Quantity:
    Price:
    $18.50
    Subtotal:
  • Wossner 12x15x14.5 mm Top End Bearing for KTM 50 SX 2007-2022 N1001

    Wossner 12x15x14.5 mm Top End Bearing for KTM 50 SX 2007-2022 N1001

    WOSSNER

    $18.50
    Top-end bearing wear is one of the most common failure points in high-revving two-stroke engines, and a failing bearing will quickly cascade into catastrophic engine damage. The Wossner 12x15x14.5 mm...
    09240494
    SKU:
    09240494
    Availability:
    Ships Same Business Day
    Weight:
    0.05 LBS
    INSIDE DIAMETER METRIC:
    12 MM
    LENGTH METRIC:
    14.5 MM
    PRODUCT NAME:
    BEARING
    OUTSIDE DIAMETER METRIC:
    15 MM
    APPLICATION:
    CONNECTING ROD
    RIDING STYLE:
    OFF-ROAD
    TYPE:
    TOP END
    UNITS:
    EACH
    $18.50
    Qty in Cart: 0
    Quantity:
    Price:
    $18.50
    Subtotal:
  • Wossner Top End Bearing 14x18x16.5mm for 2002-2022 Yamaha YZ85 N1006

    Wossner Top End Bearing 14x18x16.5mm for 2002-2022 Yamaha YZ85 N1006

    WOSSNER

    $18.50
    The Wossner N1006 top end bearing is a critical wear component in your YZ85's top end assembly—it directly impacts piston speed stability, combustion chamber seal, and overall engine longevity. A...
    09240447
    SKU:
    09240447
    Availability:
    Ships Same Business Day
    Weight:
    0.05 LBS
    PRODUCT NAME:
    BEARING
    LENGTH METRIC:
    16.5 MM
    OUTSIDE DIAMETER METRIC:
    18 MM
    TYPE:
    TOP END
    UNITS:
    EACH
    APPLICATION:
    CONNECTING ROD
    INSIDE DIAMETER METRIC:
    14 MM
    RIDING STYLE:
    OFF-ROAD
    $18.50
    Qty in Cart: 0
    Quantity:
    Price:
    $18.50
    Subtotal:
  • Wossner Top End Bearing for Kawasaki KX85 2001-2013 N1007

    Wossner Top End Bearing for Kawasaki KX85 2001-2013 N1007

    WOSSNER

    $18.50
    The Wossner Top End Bearing is a critical wear item for KX85 two-stroke engines operating at high RPM. When the original bearing begins to show play or noise, replacement is essential to prevent...
    09240448
    SKU:
    09240448
    Availability:
    Ships Same Business Day
    Weight:
    0.05 LBS
    LENGTH METRIC:
    17.2 MM
    OUTSIDE DIAMETER METRIC:
    18 MM
    TYPE:
    TOP END
    UNITS:
    EACH
    APPLICATION:
    CONNECTING ROD
    RIDING STYLE:
    OFF-ROAD
    INSIDE DIAMETER METRIC:
    18 MM
    PRODUCT NAME:
    BEARING
    $18.50
    Qty in Cart: 0
    Quantity:
    Price:
    $18.50
    Subtotal:
  • Wossner Top End Bearing 15x19x19.5 mm for 2007-2014 KTM 125 SX N1010

    Wossner Top End Bearing 15x19x19.5 mm for 2007-2014 KTM 125 SX N1010

    WOSSNER

    $18.50
    The top end bearing is critical to your KTM 125 SX's reliability—a worn or damaged bearing will compromise piston rod movement and accelerate wear across your entire top end. This Wossner bearing is...
    09240450
    SKU:
    09240450
    Availability:
    Ships Same Business Day
    Weight:
    0.05 LBS
    OUTSIDE DIAMETER METRIC:
    19 MM
    APPLICATION:
    CONNECTING ROD
    RIDING STYLE:
    OFF-ROAD
    INSIDE DIAMETER METRIC:
    15 MM
    LENGTH METRIC:
    19.5 MM
    RIDING STYLE:
    STREET
    TYPE:
    TOP END
    UNITS:
    EACH
    PRODUCT NAME:
    BEARING
    $18.50
    Qty in Cart: 0
    Quantity:
    Price:
    $18.50
    Subtotal:
  • Wossner Top End Bearing 18 mm x 22 mm x 19.8 mm N1020

    Wossner Top End Bearing 18 mm x 22 mm x 19.8 mm N1020

    WOSSNER

    $18.50
    A worn or inadequate top end bearing is a direct path to increased friction, premature wear, and catastrophic engine failure. The Wossner N1020 delivers precision-engineered reliability in a compact...
    09240456
    SKU:
    09240456
    Availability:
    Ships Same Business Day
    Weight:
    0.05 LBS
    LENGTH METRIC:
    19.8 MM
    OUTSIDE DIAMETER METRIC:
    22 MM
    APPLICATION:
    CONNECTING ROD
    INSIDE DIAMETER METRIC:
    18 MM
    RIDING STYLE:
    STREET
    UNITS:
    EACH
    PRODUCT NAME:
    BEARING
    RIDING STYLE:
    OFF-ROAD
    TYPE:
    TOP END
    $18.50
    Qty in Cart: 0
    Quantity:
    Price:
    $18.50
    Subtotal:
  • Wossner Top End Bearing 18x22x21.8mm Honda CR250R N1021

    Wossner Top End Bearing 18x22x21.8mm Honda CR250R N1021

    WOSSNER

    $18.50
    Top-end bearing wear is one of the fastest paths to catastrophic engine failure—especially under the high RPMs and thermal stress of racing. The Wössner N1021 is a precision needle roller bearing...
    09240457
    SKU:
    09240457
    Availability:
    Ships Same Business Day
    Weight:
    0.05 LBS
    INSIDE DIAMETER METRIC:
    18 MM
    PRODUCT NAME:
    BEARING
    UNITS:
    EACH
    APPLICATION:
    CONNECTING ROD
    OUTSIDE DIAMETER METRIC:
    22 MM
    LENGTH METRIC:
    21.8 MM
    RIDING STYLE:
    OFF-ROAD
    TYPE:
    TOP END
    $18.50
    Qty in Cart: 0
    Quantity:
    Price:
    $18.50
    Subtotal:
  • Wossner Top End Bearing 18x23x21.8mm Suzuki RM250 1977-2008 N1022

    Wossner Top End Bearing 18x23x21.8mm Suzuki RM250 1977-2008 N1022

    WOSSNER

    $18.50
    Top end bearings are critical wear items in two-stroke engines—they directly impact crankshaft stability, reduce parasitic friction losses, and extend engine longevity under high RPM loads. The...
    09240458
    SKU:
    09240458
    Availability:
    Ships Same Business Day
    Weight:
    0.05 LBS
    INSIDE DIAMETER METRIC:
    18 MM
    TYPE:
    TOP END
    LENGTH METRIC:
    21.8 MM
    OUTSIDE DIAMETER METRIC:
    23 MM
    PRODUCT NAME:
    BEARING
    RIDING STYLE:
    OFF-ROAD
    APPLICATION:
    CONNECTING ROD
    UNITS:
    EACH
    $18.50
    Qty in Cart: 0
    Quantity:
    Price:
    $18.50
    Subtotal:
  • Wossner Top End Bearing for Kawasaki KX65 2000-2022 N1036

    Wossner Top End Bearing for Kawasaki KX65 2000-2022 N1036

    WOSSNER

    $18.50
    The top end bearing is a critical wear item in high-revving two-stroke engines—it bears the brunt of crankshaft loads and demands precision engineering to prevent catastrophic failure. The Wossner...
    09240459
    SKU:
    09240459
    Availability:
    Ships Same Business Day
    Weight:
    0.05 LBS
    OUTSIDE DIAMETER METRIC:
    16 MM
    PRODUCT NAME:
    BEARING
    RIDING STYLE:
    OFF-ROAD
    TYPE:
    TOP END
    UNITS:
    EACH
    APPLICATION:
    CONNECTING ROD
    INSIDE DIAMETER METRIC:
    12 MM
    LENGTH METRIC:
    15.8 MM
    $18.50
    Qty in Cart: 0
    Quantity:
    Price:
    $18.50
    Subtotal:
  • Wossner Piston Kit 75mm Polaris 300 4x4 2x4 1994-1995 8095D050

    Wossner Piston Kit 75mm Polaris 300 4x4 2x4 1994-1995 8095D050

    WOSSNER

    $122.00
    Stock pistons can't handle the demands of high-performance 2-stroke applications—especially in a 300cc four-stroke platform that sees sustained high RPM and load cycling. The Wossner 8095D050 piston...
    09105516
    SKU:
    09105516
    Availability:
    Ships Same Business Day
    Weight:
    0.86 LBS
    PISTON MATERIAL:
    FORGED
    TYPE:
    DUAL RING
    MODEL:
    STANDARD SERIES
    DISPLACEMENT:
    283 CC
    ENGINE TYPE:
    2-STROKE
    PISTON MATERIAL:
    ALUMINUM ALLOY
    PRODUCT NAME:
    PISTON KIT
    RIDING STYLE:
    ATV
    BORE - OVERSIZE:
    +0,50 MM
    BORE - OVERSIZE METRIC:
    +0.50 MM
    BORE SIZE METRIC:
    75.00 MM
    PISTON SIZE METRIC:
    74.93 MM
    UNITS:
    KIT
    Qty in Cart: 0
    Quantity:
    Price:
    $122.00
    Subtotal:
  • Wossner Piston Kit 75.43mm Polaris 300 1994-1995 8095D100

    Wossner Piston Kit 75.43mm Polaris 300 1994-1995 8095D100

    WOSSNER

    $122.00
    If you're rebuilding a 1994-1995 Polaris 300 2-stroke, your engine's longevity and peak performance depend on choosing the right piston kit. The Wossner 8095D100 delivers the precision engineering...
    09105517
    SKU:
    09105517
    Availability:
    Ships Same Business Day
    Weight:
    0.81 LBS
    PISTON MATERIAL:
    FORGED
    TYPE:
    DUAL RING
    ENGINE TYPE:
    2-STROKE
    PISTON MATERIAL:
    ALUMINUM ALLOY
    PRODUCT NAME:
    PISTON KIT
    RIDING STYLE:
    ATV
    BORE - OVERSIZE:
    +1,00 MM
    MODEL:
    STANDARD SERIES
    PISTON SIZE METRIC:
    75.43 MM
    BORE - OVERSIZE METRIC:
    +1.00 MM
    BORE SIZE METRIC:
    75.50 MM
    DISPLACEMENT:
    283 CC
    UNITS:
    KIT
    $122.00
    Qty in Cart: 0
    Quantity:
    Price:
    $122.00
    Subtotal:
  • Wossner Piston Kit 83.43mm for Polaris 400L 1995 8097D050

    Wossner Piston Kit 83.43mm for Polaris 400L 1995 8097D050

    WOSSNER

    $142.00
    Stock pistons in your Polaris 400L can't handle sustained high RPM loads without accelerated wear. This Wossner kit delivers OEM-quality replacement with measurable improvements in ring seal,...
    09105520
    SKU:
    09105520
    Availability:
    Ships Same Business Day
    Weight:
    1.11 LBS
    DISPLACEMENT:
    400 CC
    MODEL:
    STANDARD SERIES
    PRODUCT NAME:
    PISTON KIT
    TYPE:
    DUAL RING
    PISTON MATERIAL:
    ALUMINUM ALLOY
    PISTON MATERIAL:
    FORGED
    RIDING STYLE:
    ATV
    BORE - OVERSIZE METRIC:
    +0.50 MM
    PISTON SIZE METRIC:
    83.43 MM
    BORE - OVERSIZE:
    +0,50 MM
    BORE SIZE METRIC:
    83.50 MM
    ENGINE TYPE:
    2-STROKE
    UNITS:
    KIT
    Qty in Cart: 0
    Quantity:
    Price:
    $142.00
    Subtotal:
  • Wossner Piston Kit 84.00mm 1995 Polaris 400L 2x4 8097D100

    Wossner Piston Kit 84.00mm 1995 Polaris 400L 2x4 8097D100

    WOSSNER

    $142.00
    When you're pushing a 2-stroke engine to its limits, piston quality directly impacts reliability, throttle response, and longevity. The Wossner 8097D100 is engineered to handle the thermal stress and...
    09105521
    SKU:
    09105521
    Availability:
    Ships Same Business Day
    Weight:
    1.06 LBS
    BORE - OVERSIZE:
    +1,00 MM
    BORE SIZE METRIC:
    84.00 MM
    MODEL:
    STANDARD SERIES
    PRODUCT NAME:
    PISTON KIT
    TYPE:
    DUAL RING
    DISPLACEMENT:
    400 CC
    PISTON SIZE METRIC:
    83.93 MM
    BORE - OVERSIZE METRIC:
    +1.00 MM
    PISTON MATERIAL:
    ALUMINUM ALLOY
    PISTON MATERIAL:
    FORGED
    ENGINE TYPE:
    2-STROKE
    RIDING STYLE:
    ATV
    UNITS:
    KIT
    $142.00
    Qty in Cart: 0
    Quantity:
    Price:
    $142.00
    Subtotal:
  • Wossner Piston Kit 83mm for Polaris 400L Xplorer 1994-2003 8097DA

    Wossner Piston Kit 83mm for Polaris 400L Xplorer 1994-2003 8097DA

    WOSSNER

    $142.00
    If you're running a Polaris 400L Xplorer and want to restore lost compression or upgrade to a higher-displacement setup, a quality piston kit is non-negotiable. The Wossner 8097DA delivers the...
    09105524
    SKU:
    09105524
    Availability:
    Ships Same Business Day
    Weight:
    1.06 LBS
    BORE - OVERSIZE METRIC:
    STANDARD
    MODEL:
    STANDARD SERIES
    PISTON SIZE METRIC:
    82.93 MM
    UNITS:
    KIT
    BORE SIZE METRIC:
    83.00 MM
    DISPLACEMENT:
    400 CC
    ENGINE TYPE:
    2-STROKE
    PRODUCT NAME:
    PISTON KIT
    TYPE:
    DUAL RING
    BORE - OVERSIZE:
    STANDARD
    PISTON MATERIAL:
    ALUMINUM ALLOY
    PISTON MATERIAL:
    FORGED
    RIDING STYLE:
    ATV
    Qty in Cart: 0
    Quantity:
    Price:
    $142.00
    Subtotal:
  • Wossner Piston Kit Yamaha YFS200 Blaster 1988-2006 8101DA

    Wossner Piston Kit Yamaha YFS200 Blaster 1988-2006 8101DA

    WOSSNER

    $112.00
    If you're running a Yamaha YFS200 Blaster hard enough to wear out factory pistons, you need a replacement engineered for sustained high-RPM operation. The Wossner 8101DA kit delivers the durability...
    09105525
    SKU:
    09105525
    Availability:
    Ships Same Business Day
    Weight:
    0.66 LBS
    DISPLACEMENT:
    195 CC
    ENGINE TYPE:
    2-STROKE
    PISTON SIZE METRIC:
    65.94 MM
    PRODUCT NAME:
    PISTON KIT
    RIDING STYLE:
    ATV
    TYPE:
    DUAL RING
    MODEL:
    STANDARD SERIES
    UNITS:
    KIT
    BORE - OVERSIZE:
    STANDARD
    BORE - OVERSIZE METRIC:
    STANDARD
    BORE SIZE METRIC:
    66.00 MM
    PISTON MATERIAL:
    ALUMINUM ALLOY
    PISTON MATERIAL:
    FORGED
    $112.00
    Qty in Cart: 0
    Quantity:
    Price:
    $112.00
    Subtotal:
  • Wossner Piston Kit Yamaha YFS200 Blaster 1988-2006 8101D100

    Wossner Piston Kit Yamaha YFS200 Blaster 1988-2006 8101D100

    WOSSNER

    $112.00
    The Wossner Piston Kit 8101D100 is engineered to restore your Yamaha YFS200 Blaster's performance and reliability through precision-machined components and proven German engineering. If you're...
    09105528
    SKU:
    09105528
    Availability:
    Ships Same Business Day
    Weight:
    0.66 LBS
    BORE - OVERSIZE METRIC:
    +1.00 MM
    BORE SIZE METRIC:
    67.00 MM
    ENGINE TYPE:
    2-STROKE
    UNITS:
    KIT
    DISPLACEMENT:
    195 CC
    PISTON MATERIAL:
    ALUMINUM ALLOY
    PISTON MATERIAL:
    FORGED
    RIDING STYLE:
    ATV
    BORE - OVERSIZE:
    +1,00 MM
    MODEL:
    STANDARD SERIES
    PISTON SIZE METRIC:
    66.94 MM
    PRODUCT NAME:
    PISTON KIT
    TYPE:
    DUAL RING
    Qty in Cart: 0
    Quantity:
    Price:
    $112.00
    Subtotal:
  • Wossner Suzuki RM250 1998 Piston Kit 66.34mm 8140DA

    Wossner Suzuki RM250 1998 Piston Kit 66.34mm 8140DA

    WOSSNER

    $152.00
    If you're rebuilding a 1998 Suzuki RM250 2-stroke, piston quality directly impacts throttle response, engine longevity, and overall reliability. The Wossner 8140DA delivers OEM-spec fitment with...
    09105552
    SKU:
    09105552
    Availability:
    Ships Same Business Day
    Weight:
    0.76 LBS
    BORE SIZE METRIC:
    66.40 MM
    DISPLACEMENT:
    246 CC
    PISTON SIZE METRIC:
    66.34 MM
    BORE - OVERSIZE METRIC:
    STANDARD
    MODEL:
    STANDARD SERIES
    RIDING STYLE:
    OFF-ROAD
    UNITS:
    KIT
    ENGINE TYPE:
    2-STROKE
    PRODUCT NAME:
    PISTON KIT
    TYPE:
    DUAL RING
    BORE - OVERSIZE:
    STANDARD
    PISTON MATERIAL:
    ALUMINUM ALLOY
    PISTON MATERIAL:
    FORGED
    Qty in Cart: 0
    Quantity:
    Price:
    $152.00
    Subtotal:
  • Wossner Piston Kit 55.44mm Honda CR125R 1980-1984 8149DA

    Wossner Piston Kit 55.44mm Honda CR125R 1980-1984 8149DA

    WOSSNER

    $132.00
    When you're rebuilding a classic CR125R or pushing your 2-stroke engine to its limits, piston quality directly impacts reliability and peak performance. The Wossner 8149DA delivers the precision...
    09105553
    SKU:
    09105553
    Availability:
    Ships Same Business Day
    Weight:
    0.41 LBS
    BORE - OVERSIZE:
    STANDARD
    BORE - OVERSIZE METRIC:
    STANDARD
    PISTON MATERIAL:
    FORGED
    TYPE:
    DUAL RING
    DISPLACEMENT:
    124 CC
    MODEL:
    STANDARD SERIES
    RIDING STYLE:
    OFF-ROAD
    BORE SIZE METRIC:
    55.50 MM
    ENGINE TYPE:
    2-STROKE
    PISTON MATERIAL:
    ALUMINUM ALLOY
    PRODUCT NAME:
    PISTON KIT
    PISTON SIZE METRIC:
    55.44 MM
    UNITS:
    KIT
    Qty in Cart: 0
    Quantity:
    Price:
    $132.00
    Subtotal:
  • Wossner Piston Kit Honda CR250R 1984-1985 8156DA

    Wossner Piston Kit Honda CR250R 1984-1985 8156DA

    WOSSNER

    $152.00
    The Wossner 8156DA piston kit is engineered to restore or exceed your CR250R's original performance capabilities while delivering the durability needed for sustained high-RPM operation. Factory...
    09105555
    SKU:
    09105555
    Availability:
    Ships Same Business Day
    Weight:
    0.71 LBS
    BORE - OVERSIZE METRIC:
    STANDARD
    MODEL:
    STANDARD SERIES
    PRODUCT NAME:
    PISTON KIT
    TYPE:
    DUAL RING
    BORE - OVERSIZE:
    STANDARD
    BORE SIZE METRIC:
    66.00 MM
    DISPLACEMENT:
    250 CC
    PISTON MATERIAL:
    ALUMINUM ALLOY
    PISTON MATERIAL:
    FORGED
    PISTON SIZE METRIC:
    65.94 MM
    RIDING STYLE:
    ATV
    ENGINE TYPE:
    2-STROKE
    RIDING STYLE:
    OFF-ROAD
    UNITS:
    KIT
    Qty in Cart: 0
    Quantity:
    Price:
    $152.00
    Subtotal:
  • Wossner Honda CR250R 1984-1985 Piston Kit 8156D025

    Wossner Honda CR250R 1984-1985 Piston Kit 8156D025

    WOSSNER

    $152.00
    The Wossner 8156D025 piston kit delivers the precision engineering and durability required for sustained high-RPM performance in your Honda CR250R. This complete kit eliminates guesswork with matched...
    09105556
    SKU:
    09105556
    Availability:
    Ships Same Business Day
    Weight:
    0.71 LBS
    BORE - OVERSIZE:
    +0,25 MM
    BORE - OVERSIZE METRIC:
    +0.25 MM
    BORE SIZE METRIC:
    66.25 MM
    PISTON MATERIAL:
    FORGED
    PISTON SIZE METRIC:
    66.19 MM
    TYPE:
    DUAL RING
    DISPLACEMENT:
    250 CC
    PISTON MATERIAL:
    ALUMINUM ALLOY
    PRODUCT NAME:
    PISTON KIT
    RIDING STYLE:
    ATV
    MODEL:
    STANDARD SERIES
    RIDING STYLE:
    OFF-ROAD
    ENGINE TYPE:
    2-STROKE
    UNITS:
    KIT
    Qty in Cart: 0
    Quantity:
    Price:
    $152.00
    Subtotal:
  • Wossner Piston Kit 66.50 mm for Honda CR250R 1997-2001 8156D050

    Wossner Piston Kit 66.50 mm for Honda CR250R 1997-2001 8156D050

    WOSSNER

    $152.00
    When you're rebuilding a CR250R engine, piston quality directly impacts throttle response, reliability, and how long your engine stays in the game. The Wossner 8156D050 delivers the precision...
    09105557
    SKU:
    09105557
    Availability:
    Ships Same Business Day
    Weight:
    0.76 LBS
    ENGINE TYPE:
    2-STROKE
    PISTON MATERIAL:
    ALUMINUM ALLOY
    RIDING STYLE:
    ATV
    RIDING STYLE:
    OFF-ROAD
    BORE - OVERSIZE:
    +0,50 MM
    DISPLACEMENT:
    250 CC
    PISTON MATERIAL:
    FORGED
    UNITS:
    KIT
    BORE - OVERSIZE METRIC:
    +0.50 MM
    BORE SIZE METRIC:
    66.50 MM
    TYPE:
    DUAL RING
    MODEL:
    STANDARD SERIES
    PISTON SIZE METRIC:
    66.44 MM
    PRODUCT NAME:
    PISTON KIT
    $152.00
    Qty in Cart: 0
    Quantity:
    Price:
    $152.00
    Subtotal:
  • Wossner Piston Kit 66.69mm Honda CR250R 1984-1985 8156D075

    Wossner Piston Kit 66.69mm Honda CR250R 1984-1985 8156D075

    WOSSNER

    $152.00
    Stock pistons are a wear item in 2-stroke engines, and when yours fails, you lose compression, power, and reliability. The Wossner 8156D075 restores your CR250R to peak performance with a...
    09105558
    SKU:
    09105558
    Availability:
    Ships Same Business Day
    Weight:
    0.71 LBS
    ENGINE TYPE:
    2-STROKE
    RIDING STYLE:
    ATV
    RIDING STYLE:
    OFF-ROAD
    UNITS:
    KIT
    BORE SIZE METRIC:
    66.75 MM
    BORE - OVERSIZE:
    +0,75 MM
    DISPLACEMENT:
    250 CC
    PISTON MATERIAL:
    ALUMINUM ALLOY
    PISTON MATERIAL:
    FORGED
    PISTON SIZE METRIC:
    66.69 MM
    BORE - OVERSIZE METRIC:
    +0.75 MM
    MODEL:
    STANDARD SERIES
    PRODUCT NAME:
    PISTON KIT
    TYPE:
    DUAL RING
    Qty in Cart: 0
    Quantity:
    Price:
    $152.00
    Subtotal:
  • Wossner Honda CR250R 1997-2001 Piston Kit 8161DB

    Wossner Honda CR250R 1997-2001 Piston Kit 8161DB

    WOSSNER

    $150.96
    The Wossner 8161DB piston kit delivers the precision engineering your 2-stroke CR250R demands for consistent power delivery and extended engine life. Purpose-built with German forging expertise and...
    09105564
    SKU:
    09105564
    Availability:
    Ships Same Business Day
    Weight:
    0.66 LBS
    BORE - OVERSIZE METRIC:
    +0.01 MM
    TYPE:
    SINGLE RING
    UNITS:
    KIT
    DISPLACEMENT:
    249 CC
    ENGINE TYPE:
    2-STROKE
    PISTON MATERIAL:
    ALUMINUM ALLOY
    PRODUCT NAME:
    PISTON KIT
    MODEL:
    STANDARD SERIES
    RIDING STYLE:
    OFF-ROAD
    BORE - OVERSIZE:
    +0,01 MM
    BORE SIZE METRIC:
    66.41 MM
    PISTON MATERIAL:
    FORGED
    PISTON SIZE METRIC:
    66.35 MM
    Qty in Cart: 0
    Quantity:
    Price:
    $150.96
    Subtotal:
  • Wossner Piston Kit for Honda CR250R 1997-2001 8161DC

    Wossner Piston Kit for Honda CR250R 1997-2001 8161DC

    WOSSNER

    $150.96
    Your CR250R's performance is only as strong as its core. Wossner's 8161DC piston kit delivers the thermal stability and reduced friction your 2-stroke engine demands during aggressive riding, whether...
    09105565
    SKU:
    09105565
    Availability:
    Ships Same Business Day
    Weight:
    0.71 LBS
    BORE - OVERSIZE METRIC:
    +0.02 MM
    MODEL:
    STANDARD SERIES
    PRODUCT NAME:
    PISTON KIT
    BORE - OVERSIZE:
    +0,02 MM
    PISTON MATERIAL:
    FORGED
    RIDING STYLE:
    OFF-ROAD
    UNITS:
    KIT
    DISPLACEMENT:
    249 CC
    ENGINE TYPE:
    2-STROKE
    PISTON SIZE METRIC:
    66.36 MM
    TYPE:
    SINGLE RING
    BORE SIZE METRIC:
    66.42 MM
    PISTON MATERIAL:
    ALUMINUM ALLOY
    Qty in Cart: 0
    Quantity:
    Price:
    $150.96
    Subtotal:
  • Wossner Piston Kit Kawasaki KX250 2005-2007 8168DB

    Wossner Piston Kit Kawasaki KX250 2005-2007 8168DB

    WOSSNER

    $152.00
    When you're pushing a KX250 to its limits, factory pistons won't cut it. The Wossner 8168DB delivers the strength, heat resistance, and precision engineering you need to maintain peak performance lap...
    09105566
    SKU:
    09105566
    Availability:
    Ships Same Business Day
    Weight:
    0.71 LBS
    BORE - OVERSIZE METRIC:
    +0.01 MM
    BORE SIZE METRIC:
    66.41 MM
    DISPLACEMENT:
    249 CC
    ENGINE TYPE:
    2-STROKE
    PRODUCT NAME:
    PISTON KIT
    TYPE:
    DUAL RING
    MODEL:
    STANDARD SERIES
    RIDING STYLE:
    OFF-ROAD
    UNITS:
    KIT
    BORE - OVERSIZE:
    +0,01 MM
    PISTON MATERIAL:
    ALUMINUM ALLOY
    PISTON MATERIAL:
    FORGED
    PISTON SIZE METRIC:
    66.35 MM
    Qty in Cart: 0
    Quantity:
    Price:
    $152.00
    Subtotal:
  • Wossner Piston Kit Yamaha IT250 1983 8175D100

    Wossner Piston Kit Yamaha IT250 1983 8175D100

    WOSSNER

    $152.00
    If you're rebuilding a 1983 Yamaha IT250 or pushing this classic 2-stroke to its limits, piston quality directly impacts reliability, power delivery, and engine longevity. The Wossner 8175D100 kit...
    09105568
    SKU:
    09105568
    Availability:
    Ships Same Business Day
    Weight:
    0.76 LBS
    BORE - OVERSIZE:
    +1,00 MM
    DISPLACEMENT:
    246 CC
    MODEL:
    STANDARD SERIES
    PRODUCT NAME:
    PISTON KIT
    RIDING STYLE:
    STREET
    TYPE:
    DUAL RING
    BORE - OVERSIZE METRIC:
    +1.00 MM
    BORE SIZE METRIC:
    69.00 MM
    PISTON MATERIAL:
    FORGED
    PISTON SIZE METRIC:
    68.94 MM
    UNITS:
    KIT
    ENGINE TYPE:
    2-STROKE
    PISTON MATERIAL:
    ALUMINUM ALLOY
    RIDING STYLE:
    OFF-ROAD
    Qty in Cart: 0
    Quantity:
    Price:
    $152.00
    Subtotal:
  • Wossner Piston Kit 70.44mm Yamaha IT250 1978-1980 YZ250 1976-1979 8179D050

    Wossner Piston Kit 70.44mm Yamaha IT250 1978-1980 YZ250 1976-1979 8179D050

    WOSSNER

    $152.00
    When you're pushing a 2-stroke to its limits, stock pistons become your bottleneck. The Wossner 8179D050 kit delivers the strength and precision engineering needed to handle aggressive riding, high...
    09105570
    SKU:
    09105570
    Availability:
    Ships Same Business Day
    Weight:
    0.76 LBS
    DISPLACEMENT:
    246 CC
    MODEL:
    STANDARD SERIES
    PRODUCT NAME:
    PISTON KIT
    RIDING STYLE:
    STREET
    BORE - OVERSIZE:
    +0,50 MM
    BORE SIZE METRIC:
    70.50 MM
    PISTON MATERIAL:
    FORGED
    UNITS:
    KIT
    BORE - OVERSIZE METRIC:
    +0.50 MM
    TYPE:
    DUAL RING
    ENGINE TYPE:
    2-STROKE
    PISTON MATERIAL:
    ALUMINUM ALLOY
    PISTON SIZE METRIC:
    70.44 MM
    RIDING STYLE:
    OFF-ROAD
    $152.00
    Qty in Cart: 0
    Quantity:
    Price:
    $152.00
    Subtotal:
  • Wossner Piston Kit Yamaha YZ250 1976-1979 72mm 8179D200

    Wossner Piston Kit Yamaha YZ250 1976-1979 72mm 8179D200

    WOSSNER

    $182.00
    The Wossner Piston Kit 8179D200 is engineered specifically for Yamaha YZ250 models from 1976-1979, delivering the precision and durability your 2-stroke demands during aggressive riding conditions...
    09105571
    SKU:
    09105571
    Availability:
    Ships Same Business Day
    Weight:
    0.81 LBS
    DISPLACEMENT:
    246 CC
    MODEL:
    STANDARD SERIES
    PRODUCT NAME:
    PISTON KIT
    RIDING STYLE:
    STREET
    TYPE:
    DUAL RING
    BORE - OVERSIZE:
    +2,00 MM
    PISTON MATERIAL:
    ALUMINUM ALLOY
    PISTON MATERIAL:
    FORGED
    PISTON SIZE METRIC:
    71.94 MM
    BORE - OVERSIZE METRIC:
    +2.00 MM
    BORE SIZE METRIC:
    72.00 MM
    ENGINE TYPE:
    2-STROKE
    RIDING STYLE:
    OFF-ROAD
    UNITS:
    KIT
    $182.00
    Qty in Cart: 0
    Quantity:
    Price:
    $182.00
    Subtotal:
  • Wossner Piston Kit Kawasaki KX80 1988-2000 47.95mm 8197DA

    Wossner Piston Kit Kawasaki KX80 1988-2000 47.95mm 8197DA

    WOSSNER

    $112.00
    Your KX80's longevity depends on a piston that can handle the demands of 2-stroke performance without sacrificing reliability. The Wossner 8197DA delivers the durability and precision engineering...
    09105572
    SKU:
    09105572
    Availability:
    Ships Same Business Day
    Weight:
    0.36 LBS
    BORE - OVERSIZE METRIC:
    STANDARD
    MODEL:
    STANDARD SERIES
    PRODUCT NAME:
    PISTON KIT
    BORE - OVERSIZE:
    STANDARD
    PISTON MATERIAL:
    ALUMINUM ALLOY
    PISTON MATERIAL:
    FORGED
    PISTON SIZE METRIC:
    47.95 MM
    BORE SIZE METRIC:
    48.00 MM
    DISPLACEMENT:
    79 CC
    ENGINE TYPE:
    2-STROKE
    RIDING STYLE:
    OFF-ROAD
    TYPE:
    SINGLE RING
    UNITS:
    KIT
    Qty in Cart: 0
    Quantity:
    Price:
    $112.00
    Subtotal:
  • Wossner Piston Kit 57.95mm for 2016-2022 KTM 150 SX 8299DA

    Wossner Piston Kit 57.95mm for 2016-2022 KTM 150 SX 8299DA

    WOSSNER

    $142.00
    A worn or stock piston compromises your 150 SX's power delivery and longevity, especially under sustained high-RPM racing loads. The Wossner 8299DA delivers the durability and precision your engine...
    09105589
    SKU:
    09105589
    Availability:
    Ships Same Business Day
    Weight:
    0.41 LBS
    BORE - OVERSIZE:
    STANDARD
    BORE - OVERSIZE METRIC:
    STANDARD
    PRODUCT NAME:
    PISTON KIT
    DISPLACEMENT:
    143 CC
    MODEL:
    STANDARD SERIES
    BORE SIZE METRIC:
    58.00 MM
    PISTON MATERIAL:
    ALUMINUM ALLOY
    PISTON MATERIAL:
    FORGED
    PISTON SIZE METRIC:
    57.95 MM
    ENGINE TYPE:
    2-STROKE
    RIDING STYLE:
    OFF-ROAD
    TYPE:
    SINGLE RING
    UNITS:
    KIT
    $142.00
    Qty in Cart: 0
    Quantity:
    Price:
    $142.00
    Subtotal:
  • Wossner Yamaha YZ65 2018-2025 Piston Kit 8306DA

    Wossner Yamaha YZ65 2018-2025 Piston Kit 8306DA

    WOSSNER

    $112.00
    The Wossner YZ65 piston kit is engineered for 2-stroke engines that demand reliability and consistent power delivery. If you're rebuilding after ring wear or preparing for competitive riding, this...
    09105590
    SKU:
    09105590
    Availability:
    Ships Same Business Day
    Weight:
    0.31 LBS
    BORE SIZE METRIC:
    43.50 MM
    ENGINE TYPE:
    2-STROKE
    PISTON SIZE METRIC:
    43.45 MM
    PRODUCT NAME:
    PISTON KIT
    TYPE:
    SINGLE RING
    BORE - OVERSIZE METRIC:
    STANDARD
    MODEL:
    STANDARD SERIES
    RIDING STYLE:
    OFF-ROAD
    UNITS:
    KIT
    BORE - OVERSIZE:
    STANDARD
    DISPLACEMENT:
    65 CC
    PISTON MATERIAL:
    ALUMINUM ALLOY
    PISTON MATERIAL:
    FORGED
    $112.00
    Qty in Cart: 0
    Quantity:
    Price:
    $112.00
    Subtotal:
  • On Sale
    Wossner Piston Kit 81.93mm for Polaris Sportsman 800 2005-2014 K8877D200-2

    Wossner Piston Kit 81.93mm for Polaris Sportsman 800 2005-2014 K8877D200-2

    WOSSNER

    MSRP: $321.95
    Now: $287.00
    Was: $321.95
    If you're running a Polaris Sportsman 800 hard, factory pistons won't cut it. The Wossner K8877D200-2 delivers the durability and precision needed for sustained high-RPM performance, with a...
    09105593
    SKU:
    09105593
    Availability:
    Ships Same Business Day
    Weight:
    2.21 LBS
    PISTON SIZE METRIC:
    81.93 MM
    RIDING STYLE:
    UTV
    BORE SIZE METRIC:
    82.00 MM
    COMPRESSION RATIO IMPERIAL:
    10.0:1
    MODEL:
    STANDARD SERIES
    UNITS:
    KIT
    BORE - OVERSIZE METRIC:
    +2.00 MM
    PRODUCT NAME:
    PISTON KIT
    BORE - OVERSIZE:
    +2,00 MM
    ENGINE TYPE:
    4-STROKE
    PISTON MATERIAL:
    ALUMINUM ALLOY
    PISTON MATERIAL:
    FORGED
    RIDING STYLE:
    ATV
    MSRP: $321.95
    Now: $287.00
    Was: $321.95
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $321.95
    Now: $287.00
    Was: $321.95
    Subtotal:
  • On Sale
    Wossner Piston Kit 84.93mm Polaris Ranger RZR 800 2008-2013 K8877D500-2

    Wossner Piston Kit 84.93mm Polaris Ranger RZR 800 2008-2013 K8877D500-2

    WOSSNER

    MSRP: $321.95
    Now: $287.00
    Was: $321.95
    If you're running a Polaris Ranger RZR 800, your engine's longevity and power delivery depend on reliable internal components. The Wossner Piston Kit K8877D500-2 delivers the precision engineering...
    09105595
    SKU:
    09105595
    Availability:
    Ships Same Business Day
    Weight:
    2.16 LBS
    UNITS:
    KIT
    BORE SIZE METRIC:
    85.00 MM
    ENGINE TYPE:
    4-STROKE
    PISTON MATERIAL:
    ALUMINUM ALLOY
    PRODUCT NAME:
    PISTON KIT
    RIDING STYLE:
    ATV
    BORE - OVERSIZE:
    +5,00 MM
    BORE - OVERSIZE METRIC:
    +5.00 MM
    MODEL:
    STANDARD SERIES
    RIDING STYLE:
    UTV
    COMPRESSION RATIO IMPERIAL:
    12.0:1
    PISTON MATERIAL:
    FORGED
    PISTON SIZE METRIC:
    84.93 MM
    MSRP: $321.95
    Now: $287.00
    Was: $321.95
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $321.95
    Now: $287.00
    Was: $321.95
    Subtotal:
  • Wossner Piston Kit for Polaris 900 RZR XP 2011-2014 11.0:1 CR K8897DA-2

    Wossner Piston Kit for Polaris 900 RZR XP 2011-2014 11.0:1 CR K8897DA-2

    WOSSNER

    $428.00
    When you're pushing a Polaris 900 RZR XP to its limits, your piston kit needs to handle extreme combustion pressures and sustained high RPMs without compromise. The Wossner K8897DA-2 delivers the...
    09105596
    SKU:
    09105596
    Availability:
    Ships Same Business Day
    Weight:
    2.41 LBS
    COMPRESSION RATIO IMPERIAL:
    11.0:1
    MODEL:
    PRO SERIES
    UNITS:
    KIT
    RIDING STYLE:
    UTV
    BORE - OVERSIZE:
    STANDARD
    BORE - OVERSIZE METRIC:
    STANDARD
    BORE SIZE METRIC:
    93.00 MM
    ENGINE TYPE:
    4-STROKE
    PISTON MATERIAL:
    ALUMINUM ALLOY
    PISTON MATERIAL:
    FORGED
    PISTON SIZE METRIC:
    92.95 MM
    PRODUCT NAME:
    PISTON KIT
    $428.00
    Qty in Cart: 0
    Quantity:
    Price:
    $428.00
    Subtotal:
  • Total: items /

Adding your products to cart

Big Power, Nice Sound!

Picked up a Pro Circuit pipe and silencer for my YZ125 it’s a game changer. The power feels way better and the sound is awesome.

Tyler D. - 06/12

Perfect Fit

First time ordering here and dang y’all knocked it outta the park! The wheels fit my Ranger UTV perfect, and I’ll definitely be back for more 5 stars all day!

Sarah L. - 08/24

Fast Shipping!!

Ordered on a Monday, and it was on my doorstep by Wednesday! Super impressed with how fast the shipping was.

Jason P. - 09/13

Helps keep cool, works great!

Bought the dual pass Allstar radiator for my build, and it’s been solid. Keeps the engine running cool even on the hottest days no complaints here!

Jake M. - 05/21

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