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Dirt Bike Engine

Dirt Bike Engine

Dirt Bike Engine

Dirt Bike Engine Parts at JJ Motorsports

Discover a full range of dirt bike engine components for rebuilding or upgrading your performance from JJ Motorsports. From crankshafts to cylinder heads and piston kits, these precision-engineered components ensure reliable performance. For additional upgrades, check out our full selection of off-road dirt bike parts to keep your engine running at peak efficiency on the track or trails.

Shop trusted brands like Wiseco for forged piston kits and K&N for high-flow oil filters. Explore related categories such as Dirt Bike Air and Fuel for intake upgrades or Dirt Bike Exhaust for complete systems.

Browse our in-stock inventory below with same-day shipping and expert support. Questions? Contact us for fitment advice!

  • Product
  • Qty in Cart
  • Quantity
  • Price
  • Subtotal
  • Wiseco 54mm Piston Ring Set for Honda CR125R 1987-2007 2126CS

    Wiseco 54mm Piston Ring Set for Honda CR125R 1987-2007 2126CS

    WISECO

    $25.95
    A quality piston ring set is critical to engine longevity and performance—it's the seal between your piston and cylinder wall that prevents blow-by and oil consumption. The Wiseco 2126CS delivers...
    2126CS
    SKU:
    2126CS
    Availability:
    Ships Same Business Day
    Weight:
    0.02 LBS
    BORE SIZE METRIC:
    54.00 MM
    DISPLACEMENT:
    125 CC
    PRODUCT NAME:
    PISTON RING
    UNITS:
    SET
    RIDING STYLE:
    OFF-ROAD
    PISTON MATERIAL:
    ALUMINUM
    $25.95
    Qty in Cart: 0
    Quantity:
    Price:
    $25.95
    Subtotal:
  • On Sale
    Wossner Piston Kit Honda CR250R 1997-2001 66.34mm 8001DA

    Wossner Piston Kit Honda CR250R 1997-2001 66.34mm 8001DA

    WOSSNER

    MSRP: $152.00
    Now: $144.40
    Was: $152.00
    If you're running a CR250R and looking to restore or exceed factory performance, a quality piston kit is non-negotiable. Wossner's 8001DA delivers the durability and precision needed for consistent...
    09104684
    SKU:
    09104684
    Availability:
    Ships Same Business Day
    Weight:
    0.70 LBS
    BORE - OVERSIZE:
    STANDARD
    BORE - OVERSIZE METRIC:
    STANDARD
    PISTON MATERIAL:
    ALUMINUM ALLOY
    PISTON MATERIAL:
    FORGED
    DISPLACEMENT:
    249 CC
    ENGINE TYPE:
    2-STROKE
    PRODUCT NAME:
    PISTON KIT
    TYPE:
    DUAL RING
    MODEL:
    STANDARD SERIES
    PISTON SIZE METRIC:
    66.34 MM
    RIDING STYLE:
    OFF-ROAD
    UNITS:
    KIT
    BORE SIZE METRIC:
    66.40 MM
    MSRP: $152.00
    Now: $144.40
    Was: $152.00
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $152.00
    Now: $144.40
    Was: $152.00
    Subtotal:
  • On Sale
    Wossner Piston Kit Honda CR250R 1997-2001 8001DC

    Wossner Piston Kit Honda CR250R 1997-2001 8001DC

    WOSSNER

    MSRP: $152.00
    Now: $144.40
    Was: $152.00
    A worn or damaged piston directly compromises your CR250R's power delivery, throttle response, and engine longevity. The Wossner 8001DC addresses this with a complete, ready-to-install kit engineered...
    09104686
    SKU:
    09104686
    Availability:
    Ships Same Business Day
    Weight:
    0.70 LBS
    BORE SIZE METRIC:
    66.42 MM
    PISTON MATERIAL:
    ALUMINUM ALLOY
    PISTON MATERIAL:
    FORGED
    DISPLACEMENT:
    249 CC
    ENGINE TYPE:
    2-STROKE
    PISTON SIZE METRIC:
    66.36 MM
    PRODUCT NAME:
    PISTON KIT
    TYPE:
    DUAL RING
    MODEL:
    STANDARD SERIES
    RIDING STYLE:
    OFF-ROAD
    UNITS:
    KIT
    BORE - OVERSIZE:
    +0,02 MM
    BORE - OVERSIZE METRIC:
    +0.02 MM
    MSRP: $152.00
    Now: $144.40
    Was: $152.00
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $152.00
    Now: $144.40
    Was: $152.00
    Subtotal:
  • On Sale
    Wossner Piston Kit Kawasaki KDX125 1990-2005 8008DB

    Wossner Piston Kit Kawasaki KDX125 1990-2005 8008DB

    WOSSNER

    MSRP: $142.00
    Now: $134.90
    Was: $142.00
    If you're running a KDX125 on the track or trail, piston durability and ring sealing are non-negotiable. The Wossner 8008DB replaces worn or damaged pistons with a forged aluminum unit engineered to...
    09104708
    SKU:
    09104708
    Availability:
    Ships Same Business Day
    Weight:
    0.50 LBS
    BORE - OVERSIZE METRIC:
    +0.01 MM
    UNITS:
    KIT
    ENGINE TYPE:
    2-STROKE
    PISTON MATERIAL:
    ALUMINUM ALLOY
    PRODUCT NAME:
    PISTON KIT
    BORE - OVERSIZE:
    +0,01 MM
    DISPLACEMENT:
    124 CC
    MODEL:
    STANDARD SERIES
    PISTON SIZE METRIC:
    55.95 MM
    RIDING STYLE:
    OFF-ROAD
    BORE SIZE METRIC:
    56.01 MM
    PISTON MATERIAL:
    FORGED
    TYPE:
    DUAL RING
    MSRP: $142.00
    Now: $134.90
    Was: $142.00
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $142.00
    Now: $134.90
    Was: $142.00
    Subtotal:
  • On Sale
    Wossner Piston Kit 54.44mm Honda NSR125R 1990–2001 8019D050

    Wossner Piston Kit 54.44mm Honda NSR125R 1990–2001 8019D050

    WOSSNER

    MSRP: $144.95
    Now: $137.70
    Was: $144.95
    If you're running an NSR125R in competition or pushing it hard on the street, piston wear directly impacts your power delivery and engine longevity. The Wössner 8019D050 kit delivers the precision...
    09104716
    SKU:
    09104716
    Availability:
    Ships Same Business Day
    Weight:
    0.45 LBS
    BORE - OVERSIZE METRIC:
    +0.50 MM
    DISPLACEMENT:
    124 CC
    ENGINE TYPE:
    2-STROKE
    PISTON MATERIAL:
    ALUMINUM ALLOY
    RIDING STYLE:
    OFF-ROAD
    BORE SIZE METRIC:
    54.50 MM
    PISTON SIZE METRIC:
    54.44 MM
    TYPE:
    DUAL RING
    BORE - OVERSIZE:
    +0,50 MM
    PISTON MATERIAL:
    FORGED
    UNITS:
    KIT
    MODEL:
    STANDARD SERIES
    PRODUCT NAME:
    PISTON KIT
    MSRP: $144.95
    Now: $137.70
    Was: $144.95
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $144.95
    Now: $137.70
    Was: $144.95
    Subtotal:
  • On Sale
    Wossner Piston Kit for Honda NSR125R 1991-1996 8019DB

    Wossner Piston Kit for Honda NSR125R 1991-1996 8019DB

    WOSSNER

    MSRP: $142.00
    Now: $134.90
    Was: $142.00
    The Wossner 8019DB piston kit delivers the precision and durability demanded by serious Honda NSR125R racers and high-performance builders. Factory OEM pistons can't match the strength of 4032 T6...
    09104718
    SKU:
    09104718
    Availability:
    Ships Same Business Day
    Weight:
    0.45 LBS
    PISTON MATERIAL:
    ALUMINUM ALLOY
    PISTON MATERIAL:
    FORGED
    ENGINE TYPE:
    2-STROKE
    PRODUCT NAME:
    PISTON KIT
    TYPE:
    DUAL RING
    BORE - OVERSIZE:
    +0,01 MM
    BORE - OVERSIZE METRIC:
    +0.01 MM
    DISPLACEMENT:
    124 CC
    MODEL:
    STANDARD SERIES
    RIDING STYLE:
    OFF-ROAD
    UNITS:
    KIT
    BORE SIZE METRIC:
    54.01 MM
    PISTON SIZE METRIC:
    53.95 MM
    MSRP: $142.00
    Now: $134.90
    Was: $142.00
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $142.00
    Now: $134.90
    Was: $142.00
    Subtotal:
  • On Sale
    Wossner Piston Kit 66.94mm Kawasaki KX250 1992-2001 8026D060

    Wossner Piston Kit 66.94mm Kawasaki KX250 1992-2001 8026D060

    WOSSNER

    MSRP: $152.00
    Now: $144.40
    Was: $152.00
    Stock pistons in your 1992–2001 KX250 are engineered for reliability, not longevity under sustained racing conditions. The Wossner 8026D060 kit replaces worn or damaged pistons with German-engineered...
    09104739
    SKU:
    09104739
    Availability:
    Ships Same Business Day
    Weight:
    0.75 LBS
    MODEL:
    STANDARD SERIES
    PISTON SIZE METRIC:
    66.94 MM
    PRODUCT NAME:
    PISTON KIT
    BORE SIZE METRIC:
    67.00 MM
    PISTON MATERIAL:
    FORGED
    UNITS:
    KIT
    BORE - OVERSIZE METRIC:
    +0.60 MM
    DISPLACEMENT:
    249 CC
    TYPE:
    DUAL RING
    BORE - OVERSIZE:
    +0,60 MM
    ENGINE TYPE:
    2-STROKE
    PISTON MATERIAL:
    ALUMINUM ALLOY
    RIDING STYLE:
    OFF-ROAD
    MSRP: $152.00
    Now: $144.40
    Was: $152.00
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $152.00
    Now: $144.40
    Was: $152.00
    Subtotal:
  • On Sale
    Wossner Kawasaki KX250 1992-2001 Piston Kit 8026DB

    Wossner Kawasaki KX250 1992-2001 Piston Kit 8026DB

    WOSSNER

    MSRP: $152.00
    Now: $144.40
    Was: $152.00
    If you're rebuilding your KX250's top end, you need a piston kit engineered for the demands of 2-stroke racing. The Wossner 8026DB delivers the durability and precision required to maintain peak...
    09104741
    SKU:
    09104741
    Availability:
    Ships Same Business Day
    Weight:
    0.75 LBS
    BORE - OVERSIZE:
    +0,01 MM
    MODEL:
    STANDARD SERIES
    PRODUCT NAME:
    PISTON KIT
    BORE SIZE METRIC:
    66.41 MM
    DISPLACEMENT:
    249 CC
    PISTON SIZE METRIC:
    66.35 MM
    TYPE:
    DUAL RING
    BORE - OVERSIZE METRIC:
    +0.01 MM
    PISTON MATERIAL:
    FORGED
    UNITS:
    KIT
    ENGINE TYPE:
    2-STROKE
    PISTON MATERIAL:
    ALUMINUM ALLOY
    RIDING STYLE:
    OFF-ROAD
    MSRP: $152.00
    Now: $144.40
    Was: $152.00
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $152.00
    Now: $144.40
    Was: $152.00
    Subtotal:
  • On Sale
    Wossner Piston Kit 63.96mm for 1998-2006 KTM 200 EXC 2003-2004 KTM 200 SX 8048DC

    Wossner Piston Kit 63.96mm for 1998-2006 KTM 200 EXC 2003-2004 KTM 200 SX 8048DC

    WOSSNER

    MSRP: $142.00
    Now: $134.90
    Was: $142.00
    If you're running a KTM 200 2-stroke at the edge of its limits, piston durability and precision are non-negotiable. The Wossner 8048DC delivers the exact bore diameter your engine demands while...
    09104757
    SKU:
    09104757
    Availability:
    Ships Same Business Day
    Weight:
    0.65 LBS
    BORE SIZE METRIC:
    64.02 MM
    DISPLACEMENT:
    193 CC
    ENGINE TYPE:
    2-STROKE
    RIDING STYLE:
    OFF-ROAD
    UNITS:
    KIT
    BORE - OVERSIZE:
    +0,02 MM
    BORE - OVERSIZE METRIC:
    +0.02 MM
    PISTON SIZE METRIC:
    63.96 MM
    PISTON MATERIAL:
    ALUMINUM ALLOY
    PISTON MATERIAL:
    FORGED
    RIDING STYLE:
    STREET
    MODEL:
    STANDARD SERIES
    PRODUCT NAME:
    PISTON KIT
    TYPE:
    DUAL RING
    MSRP: $142.00
    Now: $134.90
    Was: $142.00
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $142.00
    Now: $134.90
    Was: $142.00
    Subtotal:
  • On Sale
    Wossner Piston Kit Suzuki RM125 1989-1999 8055DA

    Wossner Piston Kit Suzuki RM125 1989-1999 8055DA

    WOSSNER

    MSRP: $122.00
    Now: $115.90
    Was: $122.00
    The Wossner 8055DA piston kit delivers the reliability and precision your RM125 demands, whether you're chasing lap times or rebuilding after hard use. Its 4032 T6 forged aluminum construction and...
    09104763
    SKU:
    09104763
    Availability:
    Ships Same Business Day
    Weight:
    0.40 LBS
    BORE - OVERSIZE:
    STANDARD
    BORE - OVERSIZE METRIC:
    STANDARD
    PISTON MATERIAL:
    ALUMINUM ALLOY
    PISTON MATERIAL:
    FORGED
    MODEL:
    STANDARD SERIES
    RIDING STYLE:
    OFF-ROAD
    UNITS:
    KIT
    ENGINE TYPE:
    2-STROKE
    PRODUCT NAME:
    PISTON KIT
    TYPE:
    SINGLE RING
    BORE SIZE METRIC:
    54.00 MM
    DISPLACEMENT:
    123 CC
    PISTON SIZE METRIC:
    53.95 MM
    MSRP: $122.00
    Now: $115.90
    Was: $122.00
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $122.00
    Now: $115.90
    Was: $122.00
    Subtotal:
  • On Sale
    Wossner Piston Kit 53.96mm for 1989-1999 Suzuki RM125 8055DB

    Wossner Piston Kit 53.96mm for 1989-1999 Suzuki RM125 8055DB

    WOSSNER

    MSRP: $122.00
    Now: $115.90
    Was: $122.00
    Factory pistons on your 1989-1999 RM125 won't survive the punishment of sustained high RPM riding or race conditions. The Wossner 8055DB delivers the strength and precision engineering your 2-stroke...
    09104764
    SKU:
    09104764
    Availability:
    Ships Same Business Day
    Weight:
    0.45 LBS
    PISTON MATERIAL:
    ALUMINUM ALLOY
    PISTON MATERIAL:
    FORGED
    ENGINE TYPE:
    2-STROKE
    PISTON SIZE METRIC:
    53.96 MM
    PRODUCT NAME:
    PISTON KIT
    BORE - OVERSIZE:
    +0,01 MM
    BORE - OVERSIZE METRIC:
    +0.01 MM
    MODEL:
    STANDARD SERIES
    RIDING STYLE:
    OFF-ROAD
    UNITS:
    KIT
    BORE SIZE METRIC:
    54.01 MM
    DISPLACEMENT:
    123 CC
    TYPE:
    SINGLE RING
    MSRP: $122.00
    Now: $115.90
    Was: $122.00
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $122.00
    Now: $115.90
    Was: $122.00
    Subtotal:
  • On Sale
    Wossner Suzuki RM125 1989-1999 53.97mm Piston Kit 8055DC

    Wossner Suzuki RM125 1989-1999 53.97mm Piston Kit 8055DC

    WOSSNER

    MSRP: $122.00
    Now: $115.90
    Was: $122.00
    If you're running a Suzuki RM125 two-stroke and want reliable power delivery without sacrificing durability, this Wossner piston kit is engineered to handle the demands of both racing and trail...
    09104765
    SKU:
    09104765
    Availability:
    Ships Same Business Day
    Weight:
    0.40 LBS
    PISTON MATERIAL:
    FORGED
    BORE - OVERSIZE:
    +0,02 MM
    BORE - OVERSIZE METRIC:
    +0.02 MM
    MODEL:
    STANDARD SERIES
    RIDING STYLE:
    OFF-ROAD
    ENGINE TYPE:
    2-STROKE
    PISTON MATERIAL:
    ALUMINUM ALLOY
    PISTON SIZE METRIC:
    53.97 MM
    PRODUCT NAME:
    PISTON KIT
    BORE SIZE METRIC:
    54.02 MM
    DISPLACEMENT:
    123 CC
    TYPE:
    SINGLE RING
    UNITS:
    KIT
    MSRP: $122.00
    Now: $115.90
    Was: $122.00
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $122.00
    Now: $115.90
    Was: $122.00
    Subtotal:
  • On Sale
    Wossner Piston Kit 53.96mm for KTM 125 SX 2001-2006 8056DB

    Wossner Piston Kit 53.96mm for KTM 125 SX 2001-2006 8056DB

    WOSSNER

    MSRP: $117.95
    Now: $112.05
    Was: $117.95
    If you're rebuilding your KTM 125 SX or pushing it to its limits, piston wear is non-negotiable—a worn piston kills compression, throttle response, and overall reliability. The Wossner 8056DB...
    09104767
    SKU:
    09104767
    Availability:
    Ships Same Business Day
    Weight:
    0.40 LBS
    BORE - OVERSIZE:
    +0,01 MM
    MODEL:
    STANDARD SERIES
    PISTON SIZE METRIC:
    53.96 MM
    PRODUCT NAME:
    PISTON KIT
    BORE SIZE METRIC:
    54.01 MM
    PISTON MATERIAL:
    ALUMINUM ALLOY
    PISTON MATERIAL:
    FORGED
    BORE - OVERSIZE METRIC:
    +0.01 MM
    DISPLACEMENT:
    124 CC
    ENGINE TYPE:
    2-STROKE
    RIDING STYLE:
    OFF-ROAD
    TYPE:
    SINGLE RING
    UNITS:
    KIT
    MSRP: $117.95
    Now: $112.05
    Was: $117.95
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $117.95
    Now: $112.05
    Was: $117.95
    Subtotal:
  • On Sale
    Wossner Piston Kit 53.97mm 2001-2006 KTM 125 SX 8056DC

    Wossner Piston Kit 53.97mm 2001-2006 KTM 125 SX 8056DC

    WOSSNER

    MSRP: $122.00
    Now: $115.90
    Was: $122.00
    If you're running a 2001-2006 KTM 125 SX, a worn or damaged piston directly kills your engine's efficiency, response, and reliability. The Wossner 8056DC replaces all critical components—piston,...
    09104768
    SKU:
    09104768
    Availability:
    Ships Same Business Day
    Weight:
    0.40 LBS
    BORE - OVERSIZE METRIC:
    +0.02 MM
    MODEL:
    STANDARD SERIES
    PRODUCT NAME:
    PISTON KIT
    PISTON MATERIAL:
    FORGED
    UNITS:
    KIT
    BORE - OVERSIZE:
    +0,02 MM
    BORE SIZE METRIC:
    54.02 MM
    TYPE:
    SINGLE RING
    DISPLACEMENT:
    124 CC
    ENGINE TYPE:
    2-STROKE
    PISTON MATERIAL:
    ALUMINUM ALLOY
    PISTON SIZE METRIC:
    53.97 MM
    RIDING STYLE:
    OFF-ROAD
    MSRP: $122.00
    Now: $115.90
    Was: $122.00
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $122.00
    Now: $115.90
    Was: $122.00
    Subtotal:
  • On Sale
    Wossner Piston Kit for 1998-2001 Yamaha YZ125 53.95mm 8091DA

    Wossner Piston Kit for 1998-2001 Yamaha YZ125 53.95mm 8091DA

    WOSSNER

    MSRP: $122.00
    Now: $115.90
    Was: $122.00
    When you're pushing a YZ125 to its limits, a worn or undersized piston robs you of compression, efficiency, and reliability. The Wossner 8091DA restores peak performance with a purpose-built 53.95mm...
    09104819
    SKU:
    09104819
    Availability:
    Ships Same Business Day
    Weight:
    0.40 LBS
    BORE - OVERSIZE:
    STANDARD
    PISTON MATERIAL:
    ALUMINUM ALLOY
    PISTON MATERIAL:
    FORGED
    ENGINE TYPE:
    2-STROKE
    PRODUCT NAME:
    PISTON KIT
    TYPE:
    SINGLE RING
    BORE - OVERSIZE METRIC:
    STANDARD
    DISPLACEMENT:
    124 CC
    MODEL:
    STANDARD SERIES
    PISTON SIZE METRIC:
    53.95 MM
    RIDING STYLE:
    OFF-ROAD
    UNITS:
    KIT
    BORE SIZE METRIC:
    54.00 MM
    MSRP: $122.00
    Now: $115.90
    Was: $122.00
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $122.00
    Now: $115.90
    Was: $122.00
    Subtotal:
  • On Sale
    Wossner Piston Kit Yamaha YZ125 1998-2001 53.97mm 8091DC

    Wossner Piston Kit Yamaha YZ125 1998-2001 53.97mm 8091DC

    WOSSNER

    MSRP: $122.00
    Now: $115.90
    Was: $122.00
    The stock piston in your YZ125 is holding back performance—wear, heat distortion, and friction rob you of throttle response and reliability. The Wossner 8091DC replaces all of that with a...
    09104821
    SKU:
    09104821
    Availability:
    Ships Same Business Day
    Weight:
    0.45 LBS
    DISPLACEMENT:
    124 CC
    ENGINE TYPE:
    2-STROKE
    RIDING STYLE:
    OFF-ROAD
    TYPE:
    SINGLE RING
    UNITS:
    KIT
    PISTON MATERIAL:
    ALUMINUM ALLOY
    PISTON MATERIAL:
    FORGED
    PISTON SIZE METRIC:
    53.97 MM
    BORE - OVERSIZE METRIC:
    +0.02 MM
    BORE SIZE METRIC:
    54.02 MM
    BORE - OVERSIZE:
    +0,02 MM
    MODEL:
    STANDARD SERIES
    PRODUCT NAME:
    PISTON KIT
    MSRP: $122.00
    Now: $115.90
    Was: $122.00
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $122.00
    Now: $115.90
    Was: $122.00
    Subtotal:
  • On Sale
    Wossner Piston Kit Kawasaki KX85 2001-2025 8102DB

    Wossner Piston Kit Kawasaki KX85 2001-2025 8102DB

    WOSSNER

    MSRP: $112.00
    Now: $106.40
    Was: $112.00
    The Wossner Piston Kit 8102DB is purpose-built for KX85 riders who demand reliable performance without compromise. If you're running hard on the track or trail, a quality piston kit directly impacts...
    09104827
    SKU:
    09104827
    Availability:
    Ships Same Business Day
    Weight:
    0.35 LBS
    MODEL:
    STANDARD SERIES
    PISTON SIZE METRIC:
    48.46 MM
    PRODUCT NAME:
    PISTON KIT
    BORE SIZE METRIC:
    48.51 MM
    TYPE:
    SINGLE RING
    BORE - OVERSIZE:
    +0,01 MM
    BORE - OVERSIZE METRIC:
    +0.01 MM
    DISPLACEMENT:
    84 CC
    PISTON MATERIAL:
    ALUMINUM ALLOY
    PISTON MATERIAL:
    FORGED
    ENGINE TYPE:
    2-STROKE
    RIDING STYLE:
    OFF-ROAD
    UNITS:
    KIT
    MSRP: $112.00
    Now: $106.40
    Was: $112.00
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $112.00
    Now: $106.40
    Was: $112.00
    Subtotal:
  • On Sale
    Wossner Suzuki RM85 2002-2023 Piston Kit 8103DA

    Wossner Suzuki RM85 2002-2023 Piston Kit 8103DA

    WOSSNER

    MSRP: $112.00
    Now: $106.40
    Was: $112.00
    Your RM85's performance is only as good as its bottom end. The Wossner 8103DA piston kit delivers the durability and precision needed to run consistent power across the full RPM range, whether you're...
    09104829
    SKU:
    09104829
    Availability:
    Ships Same Business Day
    Weight:
    0.35 LBS
    BORE - OVERSIZE METRIC:
    STANDARD
    DISPLACEMENT:
    84 CC
    MODEL:
    STANDARD SERIES
    PRODUCT NAME:
    PISTON KIT
    BORE SIZE METRIC:
    48.00 MM
    BORE - OVERSIZE:
    STANDARD
    PISTON MATERIAL:
    ALUMINUM ALLOY
    PISTON MATERIAL:
    FORGED
    PISTON SIZE METRIC:
    47.95 MM
    ENGINE TYPE:
    2-STROKE
    RIDING STYLE:
    OFF-ROAD
    TYPE:
    SINGLE RING
    UNITS:
    KIT
    MSRP: $112.00
    Now: $106.40
    Was: $112.00
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $112.00
    Now: $106.40
    Was: $112.00
    Subtotal:
  • On Sale
    Wossner Piston Kit Yamaha YZ125 2005-2021 8160DA

    Wossner Piston Kit Yamaha YZ125 2005-2021 8160DA

    WOSSNER

    MSRP: $122.00
    Now: $115.90
    Was: $122.00
    For 2-stroke race engines running hard, piston durability and friction control directly impact reliability and lap times. The Wossner 8160DA delivers German-engineered precision with a complete...
    09104853
    SKU:
    09104853
    Availability:
    Ships Same Business Day
    Weight:
    0.35 LBS
    BORE - OVERSIZE:
    STANDARD
    PISTON MATERIAL:
    ALUMINUM ALLOY
    PISTON MATERIAL:
    FORGED
    BORE - OVERSIZE METRIC:
    STANDARD
    DISPLACEMENT:
    124 CC
    MODEL:
    STANDARD SERIES
    PISTON SIZE METRIC:
    53.95 MM
    RIDING STYLE:
    OFF-ROAD
    UNITS:
    KIT
    ENGINE TYPE:
    2-STROKE
    PRODUCT NAME:
    PISTON KIT
    TYPE:
    SINGLE RING
    BORE SIZE METRIC:
    54.00 MM
    MSRP: $122.00
    Now: $115.90
    Was: $122.00
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $122.00
    Now: $115.90
    Was: $122.00
    Subtotal:
  • On Sale
    Wossner Piston Kit 71.96mm 2008-2011 KTM 300 XC-W 8250DC

    Wossner Piston Kit 71.96mm 2008-2011 KTM 300 XC-W 8250DC

    WOSSNER

    MSRP: $192.00
    Now: $182.40
    Was: $192.00
    Your 2-stroke engine demands a piston that can handle sustained high RPMs and aggressive riding without sacrificing reliability. The Wossner 8250DC delivers the durability and precision engineering...
    09104897
    SKU:
    09104897
    Availability:
    Ships Same Business Day
    Weight:
    0.85 LBS
    BORE SIZE METRIC:
    72.02 MM
    PISTON MATERIAL:
    ALUMINUM ALLOY
    PISTON MATERIAL:
    FORGED
    ENGINE TYPE:
    2-STROKE
    PRODUCT NAME:
    PISTON KIT
    TYPE:
    DUAL RING
    BORE - OVERSIZE:
    +0,02 MM
    MODEL:
    STANDARD SERIES
    PISTON SIZE METRIC:
    71.96 MM
    RIDING STYLE:
    OFF-ROAD
    UNITS:
    KIT
    BORE - OVERSIZE METRIC:
    +0.02 MM
    DISPLACEMENT:
    293 CC
    MSRP: $192.00
    Now: $182.40
    Was: $192.00
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $192.00
    Now: $182.40
    Was: $192.00
    Subtotal:
  • Total: items /

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Dirt Bike Engine Parts

Keep your dirt bike running smoothly and prolong the life of its engine with essential general maintenance. But when parts start to break down, don't let it stop you from getting out on the trails! JJ Motorsports has all that you need for minor jobs like oil changes or major overhauls such as a complete rebuild - carrying top aftermarket brands . Get back in gear faster by shopping our full line of high-quality dirt bike engine parts here today at JJ Motorsports!

 

At JJ Motorsports, we want to make sure you don't miss out on the ride! If your motor has blown or radiator smashed, our gearheads can help get you back in the seat. We carry piston kits from top brands like Wiseco and Wrench Rabbit engine kits so that riders have access to a wide range of parts for their dirt bike engine rebuilds. Plus – with gaskets at-the-ready when it comes time for any leakages - no need to worry about maintenance issues either; simply stay up on oil & filter changes and let us take care of everything else. Got queries? Just give one of our knowledgeable staff members a call at 1-231‐767‐5055 where they'll be more than happy provide advice, instructions and tailored answers catered just for YOU!

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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