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Dirt Bike Piston and Ring Kits

Dirt Bike Piston and Ring Kits

Dirt Bike Piston and Ring Kits

Dirt Bike Piston & Ring Kits for Yamaha YZ85, WR250 & YZ250 at JJ Motorsports

Rebuild your dirt bike's top end for maximum power and reliability with premium piston and ring kits from JJ Motorsports, forged from high-strength aluminum for superior heat resistance, lightweight performance, and precise fit in motocross, enduro, and trail riding. Our selection includes complete kits with pistons, high-performance rings, wrist pins, circlips, top-end bearings, and gaskets designed for enhanced combustion efficiency, reduced blow-by, and longer engine life under high-RPM abuse. Compatible with popular models like Yamaha YZ85 (2002-2018), WR250, and YZ250, these Wiseco-engineered components feature CNC-machined crowns for optimal cam shape, ArmorGlide skirt coatings for low friction, and 4032 alloy construction for durability in dusty, aggressive conditions. Whether you're refreshing a youth 85cc 2-stroke or upgrading a 250cc big bore, these kits ensure crisp throttle response, better sealing, and race-ready power without the need for custom boring—perfect for DIY rebuilds or pro-level maintenance.

Shop trusted brands like Wiseco for race-proven quality. Explore related categories such as dirt bike engine for cylinders and valves or dirt bike air and fuel for carburetors and jets.

Top Dirt Bike Piston & Ring Kits

Browse our in-stock inventory below with same-day shipping and expert support. Free shipping on orders over $99! Questions? Contact us for fitment advice!

  • Product
  • Qty in Cart
  • Quantity
  • Price
  • Subtotal
  • VERTEX Piston Kit 23375A

    VERTEX Piston Kit 23375A

    VERTEX

    $254.95
    Piston selection directly impacts your engine's reliability, power delivery, and longevity. The VERTEX Piston Kit 23375A delivers precision-engineered pistons with advanced metallurgy and coating technology, ensuring consistent performance whether you're...
    09102421
    SKU:
    09102421
    Availability:
    Ships Same Business Day
    Weight:
    0.80 LBS
    COMPRESSION RATIO IMPERIAL:
    STANDARD
    PISTON DIAMETER METRIC:
    71.94 MM
    RIDING STYLE:
    OFF-ROAD
    UNITS:
    KIT
    DISPLACEMENT:
    300 CC
    STYLE:
    CAST REPLICA
    ENGINE TYPE:
    2-STROKE
    PISTON MATERIAL:
    CAST
    PRODUCT NAME:
    PISTON KIT
    CYLINDER DIAMETER METRIC:
    72 MM
    PISTON MATERIAL:
    ALUMINUM ALLOY
    SKIRT COATING:
    MOLYBDENUM DISULPHITE
    $254.95
    Qty in Cart: 0
    Quantity:
    Price:
    $254.95
    Subtotal:
  • VERTEX Piston Kit 23375C

    VERTEX Piston Kit 23375C

    VERTEX

    $254.95
    Whether you're rebuilding a high-mileage engine or stepping up to forged internals, the VERTEX Piston Kit 23375C delivers the precision and durability needed for reliable performance across the entire RPM range. The combination of advanced metallurgy,...
    09102422
    SKU:
    09102422
    Availability:
    Ships Same Business Day
    Weight:
    0.80 LBS
    COMPRESSION RATIO IMPERIAL:
    STANDARD
    RIDING STYLE:
    OFF-ROAD
    STYLE:
    CAST REPLICA
    ENGINE TYPE:
    2-STROKE
    PISTON MATERIAL:
    ALUMINUM ALLOY
    PISTON MATERIAL:
    CAST
    PRODUCT NAME:
    PISTON KIT
    SKIRT COATING:
    MOLYBDENUM DISULPHITE
    UNITS:
    KIT
    DISPLACEMENT:
    300 CC
    PISTON DIAMETER METRIC:
    71.96 MM
    CYLINDER DIAMETER METRIC:
    72 MM
    $254.95
    Qty in Cart: 0
    Quantity:
    Price:
    $254.95
    Subtotal:
  • VERTEX Piston Kit 22995B

    VERTEX Piston Kit 22995B

    VERTEX

    $158.95
    Whether you're rebuilding a tired engine or upgrading to higher compression, the VERTEX Piston Kit 22995B delivers the durability and performance you need to run hard without compromise. VERTEX's proven heat-treatment process and molybdenum-coated skirts...
    09102034
    SKU:
    09102034
    Availability:
    Ships Same Business Day
    Weight:
    0.40 LBS
    ENGINE TYPE:
    2-STROKE
    PISTON MATERIAL:
    ALUMINUM ALLOY
    RIDING STYLE:
    OFF-ROAD
    SKIRT COATING:
    MOLYBDENUM DISULPHITE
    STYLE:
    CAST REPLICA
    COMPRESSION RATIO IMPERIAL:
    STANDARD
    CYLINDER DIAMETER METRIC:
    54.00 MM
    DISPLACEMENT:
    125 CC
    PISTON DIAMETER METRIC:
    53.93 MM
    PISTON MATERIAL:
    CAST
    PRODUCT NAME:
    PISTON KIT
    UNITS:
    KIT
    Qty in Cart: 0
    Quantity:
    Price:
    $158.95
    Subtotal:
  • Wiseco Piston Kit Yamaha XT500 1976-1981 4764M08700

    Wiseco Piston Kit Yamaha XT500 1976-1981 4764M08700

    WISECO

    $239.95
    If you're running a classic Yamaha XT500, TT500, or SR500, factory pistons won't cut it if you're serious about reliability and power. The Wiseco 4764M08700 delivers a noticeable bump in combustion efficiency and throttle response—exactly what these...
    09102923
    SKU:
    09102923
    Availability:
    Ships Same Business Day
    Weight:
    1.20 LBS
    BORE - OVERSIZE METRIC:
    STANDARD
    BORE SIZE METRIC:
    87.00 MM
    ENGINE TYPE:
    4-STROKE
    PISTON MATERIAL:
    ALUMINUM ALLOY
    PISTON MATERIAL:
    FORGED
    PRODUCT NAME:
    PISTON
    UNITS:
    EACH
    DISPLACEMENT:
    499 CC
    BORE - OVERSIZE:
    STANDARD
    RIDING STYLE:
    STREET
    STROKE LENGTH METRIC:
    84.00 MM
    COMPRESSION RATIO IMPERIAL:
    9.0:1
    RIDING STYLE:
    ADVENTURE TOURING / DUAL-SPORT
    $239.95
    Qty in Cart: 0
    Quantity:
    Price:
    $239.95
    Subtotal:
  • Wiseco 88mm 9:1 Piston Kit for Yamaha XT500 1976-1981 4764M08800

    Wiseco 88mm 9:1 Piston Kit for Yamaha XT500 1976-1981 4764M08800

    WISECO

    $239.95
    If you're running a classic Yamaha single-cylinder and want to unlock better combustion efficiency without sacrificing reliability, the Wiseco 4764M08800 delivers the precision engineering that separates a strong rebuild from a mediocre one. The 9:1...
    09102924
    SKU:
    09102924
    Availability:
    Ships Same Business Day
    Weight:
    1.05 LBS
    BORE SIZE METRIC:
    88.00 MM
    ENGINE TYPE:
    4-STROKE
    PISTON MATERIAL:
    ALUMINUM ALLOY
    PISTON MATERIAL:
    FORGED
    PRODUCT NAME:
    PISTON
    UNITS:
    EACH
    BORE - OVERSIZE METRIC:
    +1.00 MM
    RIDING STYLE:
    STREET
    STROKE LENGTH METRIC:
    84.00 MM
    BORE - OVERSIZE:
    +1,00 MM
    DISPLACEMENT:
    499 CC
    COMPRESSION RATIO IMPERIAL:
    9.0:1
    RIDING STYLE:
    ADVENTURE TOURING / DUAL-SPORT
    $239.95
    Qty in Cart: 0
    Quantity:
    Price:
    $239.95
    Subtotal:
  • Wiseco Piston Kit Yamaha SR500 1978-1981 XT500 1976-1981 TT500 1977-1981 4783M09000

    Wiseco Piston Kit Yamaha SR500 1978-1981 XT500 1976-1981 TT500 1977-1981 4783M09000

    WISECO

    $269.95
    A worn or compromised piston directly kills engine efficiency and reliability—the Wiseco 4783M09000 restores both with precision-engineered construction built to handle sustained high-RPM loads. If you're running a TT500, XT500, or SR500 and want...
    09102927
    SKU:
    09102927
    Availability:
    Ships Same Business Day
    Weight:
    1.35 LBS
    STROKE LENGTH METRIC:
    84.00 MM
    BORE - OVERSIZE METRIC:
    +3.00 MM
    ENGINE TYPE:
    4-STROKE
    PISTON MATERIAL:
    ALUMINUM ALLOY
    PISTON MATERIAL:
    FORGED
    PRODUCT NAME:
    PISTON
    RIDING STYLE:
    ADVENTURE TOURING / DUAL-SPORT
    UNITS:
    EACH
    BORE - OVERSIZE:
    +3,00 MM
    BORE SIZE METRIC:
    90.00 MM
    COMPRESSION RATIO IMPERIAL:
    9.0:1
    DISPLACEMENT:
    499 CC
    RIDING STYLE:
    STREET
    $269.95
    Qty in Cart: 0
    Quantity:
    Price:
    $269.95
    Subtotal:
  • Wiseco Piston Kit Honda CRF450R 2017 4978M09600

    Wiseco Piston Kit Honda CRF450R 2017 4978M09600

    WISECO

    $232.95
    If you're running a Honda CRF450R and want to unlock serious power gains without compromising reliability, a quality piston kit is non-negotiable. Wiseco's 4978M09600 delivers the compression ratio and material quality that separates a fast bike from a...
    09102933
    SKU:
    09102933
    Availability:
    Ships Same Business Day
    Weight:
    1.10 LBS
    COMPRESSION RATIO IMPERIAL:
    12.0:1
    DISPLACEMENT:
    449 CC
    BORE - OVERSIZE:
    STANDARD
    BORE - OVERSIZE METRIC:
    STANDARD
    BORE SIZE METRIC:
    96.00 MM
    ENGINE TYPE:
    4-STROKE
    PISTON MATERIAL:
    ALUMINUM ALLOY
    PISTON MATERIAL:
    FORGED
    PRODUCT NAME:
    PISTON
    UNITS:
    EACH
    RIDING STYLE:
    OFF-ROAD
    STROKE LENGTH METRIC:
    62.10 MM
    $232.95
    Qty in Cart: 0
    Quantity:
    Price:
    $232.95
    Subtotal:
  • Wiseco Piston Kit Kawasaki KX450F 2015 40125M09603

    Wiseco Piston Kit Kawasaki KX450F 2015 40125M09603

    WISECO

    $239.95
    The stock piston in your KX450F won't cut it if you're serious about race-day performance. Wiseco's 4980M09600 kit delivers a 12.5:1 compression ratio that translates to measurable gains in power and throttle response, while aerospace-grade aluminum...
    09102935
    SKU:
    09102935
    Availability:
    Ships Same Business Day
    Weight:
    0.95 LBS
    PISTON MATERIAL:
    ALUMINUM ALLOY
    PISTON MATERIAL:
    FORGED
    PRODUCT NAME:
    PISTON
    UNITS:
    EACH
    DISPLACEMENT:
    449 CC
    RIDING STYLE:
    OFF-ROAD
    BORE - OVERSIZE:
    STANDARD
    BORE - OVERSIZE METRIC:
    STANDARD
    BORE SIZE METRIC:
    96.00 MM
    COMPRESSION RATIO IMPERIAL:
    12.5:1
    ENGINE TYPE:
    4-STROKE
    STROKE LENGTH METRIC:
    62.10 MM
    Qty in Cart: 0
    Quantity:
    Price:
    $239.95
    Subtotal:
  • Wiseco Piston Kit Honda CRF250R 2004-2007 4984M08200

    Wiseco Piston Kit Honda CRF250R 2004-2007 4984M08200

    WISECO

    $264.95
    Stock pistons in your CRF250R can't handle sustained performance demands, limiting your engine's potential on the track or trail. Wiseco's 4984M08200 kit delivers measurable gains in throttle response and reliability through precision engineering and a...
    09102938
    SKU:
    09102938
    Availability:
    Ships Same Business Day
    Weight:
    0.65 LBS
    BORE - OVERSIZE METRIC:
    +4.00 MM
    BORE - OVERSIZE:
    +4,00 MM
    BORE SIZE METRIC:
    82.00 MM
    DISPLACEMENT:
    276 CC
    PISTON MATERIAL:
    FORGED
    STROKE LENGTH METRIC:
    52.20 MM
    COMPRESSION RATIO IMPERIAL:
    13.5:1
    ENGINE TYPE:
    4-STROKE
    PISTON MATERIAL:
    ALUMINUM ALLOY
    PRODUCT NAME:
    PISTON
    RIDING STYLE:
    OFF-ROAD
    UNITS:
    EACH
    $264.95
    Qty in Cart: 0
    Quantity:
    Price:
    $264.95
    Subtotal:
  • Wiseco Piston Kit Honda XR650L 1993-2017 10.5:1 101mm Bore 4989M10100

    Wiseco Piston Kit Honda XR650L 1993-2017 10.5:1 101mm Bore 4989M10100

    WISECO

    $248.95
    If you're running a Honda XR650L that's seen serious miles, piston wear directly impacts throttle response, compression, and overall reliability. The Wiseco 4989M10100 restores—and exceeds—factory performance with a purpose-built design that handles both...
    09102940
    SKU:
    09102940
    Availability:
    Ships Same Business Day
    Weight:
    1.55 LBS
    BORE - OVERSIZE:
    +1,00 MM
    BORE - OVERSIZE METRIC:
    +1.00 MM
    STROKE LENGTH METRIC:
    82.00 MM
    COMPRESSION RATIO IMPERIAL:
    10.5:1
    PISTON MATERIAL:
    ALUMINUM ALLOY
    PISTON MATERIAL:
    FORGED
    PRODUCT NAME:
    PISTON
    UNITS:
    EACH
    BORE SIZE METRIC:
    101.00 MM
    DISPLACEMENT:
    650 CC
    ENGINE TYPE:
    4-STROKE
    RIDING STYLE:
    OFF-ROAD
    Qty in Cart: 0
    Quantity:
    Price:
    $248.95
    Subtotal:
  • Wiseco Yamaha YZ490 1982-1983 Piston Kit 478M08800

    Wiseco Yamaha YZ490 1982-1983 Piston Kit 478M08800

    WISECO

    $234.95
    The Yamaha YZ490's original piston wasn't built for sustained high-RPM performance or aggressive riding conditions. The Wiseco 478M08800 replaces worn or damaged pistons with precision-engineered internals that restore compression, improve throttle...
    478M08800
    SKU:
    478M08800
    Availability:
    Ships Same Business Day
    Weight:
    1.20 LBS
    BORE - OVERSIZE:
    +1,00 MM
    DISPLACEMENT:
    487 CC
    PISTON DIAMETER METRIC:
    87.92 MM
    PISTON MATERIAL:
    4032 ALUMINUM ALLOY
    RIDING STYLE:
    OFF-ROAD
    UNITS:
    KIT
    BORE - OVERSIZE METRIC:
    +1.00 MM
    MODEL:
    FORGED SERIES
    SKIRT COATING:
    NON-COATED
    BORE SIZE METRIC:
    88.00 MM
    ENGINE TYPE:
    2-STROKE
    PRODUCT NAME:
    PISTON KIT
    STROKE LENGTH METRIC:
    82.00 MM
    Qty in Cart: 0
    Quantity:
    Price:
    $234.95
    Subtotal:
  • Wiseco Piston Kit 90mm 12.2:1 Compression for Suzuki DR-Z400 2000-2004 4713M09000

    Wiseco Piston Kit 90mm 12.2:1 Compression for Suzuki DR-Z400 2000-2004 4713M09000

    WISECO

    $238.95
    If you're running a Suzuki DR-Z400 and want measurable gains in power output without sacrificing engine longevity, a quality piston upgrade is one of the most direct paths to that goal. The Wiseco 4713M09000 delivers a 12.2:1 compression ratio that...
    4713M09000
    SKU:
    4713M09000
    Availability:
    Ships Same Business Day
    Weight:
    0.85 LBS
    BORE - OVERSIZE:
    STANDARD
    MODEL:
    FORGED SERIES
    PRODUCT NAME:
    PISTON KIT
    RIDING STYLE:
    STREET
    DISPLACEMENT:
    398 CC
    PISTON DIAMETER METRIC:
    89.92 MM
    RIDING STYLE:
    OFF-ROAD
    STROKE LENGTH METRIC:
    62.60 MM
    UNITS:
    KIT
    BORE - OVERSIZE METRIC:
    STANDARD
    COMPRESSION RATIO IMPERIAL:
    12.0:1
    ENGINE TYPE:
    4-STROKE
    PISTON MATERIAL:
    FORGED 2618 ALUMINUM
    RIDING STYLE:
    ATV
    SKIRT COATING:
    ARMORGLIDE®
    BORE SIZE METRIC:
    90.00 MM
    $238.95
    Qty in Cart: 0
    Quantity:
    Price:
    $238.95
    Subtotal:
  • Wiseco Piston Kit 90mm 13.5:1 Compression Arctic Cat DVX 400 2004-2008 Kawasaki KFX 400 2003-2006 Suzuki DR-Z 400 2000-2004 4714M09000

    Wiseco Piston Kit 90mm 13.5:1 Compression Arctic Cat DVX 400 2004-2008 Kawasaki KFX 400 2003-2006 Suzuki DR-Z 400 2000-2004 4714M09000

    WISECO

    $219.95
    If you're running a 400cc ATV and want measurable gains in power delivery without sacrificing reliability, a high-compression piston upgrade is one of the most effective modifications you can make. The Wiseco 4714M09000 raises your compression ratio to...
    4714M09000
    SKU:
    4714M09000
    Availability:
    Ships Same Business Day
    Weight:
    0.90 LBS
    BORE SIZE METRIC:
    90.00 MM
    RIDING STYLE:
    OFF-ROAD
    SKIRT COATING:
    ARMORGLIDE®
    UNITS:
    KIT
    BORE - OVERSIZE METRIC:
    STANDARD
    COMPRESSION RATIO IMPERIAL:
    13.5:1
    MODEL:
    FORGED SERIES
    STROKE LENGTH METRIC:
    62.60 MM
    BORE - OVERSIZE:
    STANDARD
    DISPLACEMENT:
    398 CC
    ENGINE TYPE:
    4-STROKE
    PISTON DIAMETER METRIC:
    89.92 MM
    PISTON MATERIAL:
    FORGED 2618 ALUMINUM
    PRODUCT NAME:
    PISTON KIT
    RIDING STYLE:
    ATV
    Qty in Cart: 0
    Quantity:
    Price:
    $219.95
    Subtotal:
  • Wiseco Piston Yamaha YT175 1982-1983 471M06600

    Wiseco Piston Yamaha YT175 1982-1983 471M06600

    WISECO

    $162.95
    If your Yamaha YT175 is showing signs of worn pistons—loss of compression, increased blowby, or sluggish throttle response—a quality replacement is essential to restore engine efficiency and prevent further damage. The Wiseco 471M06600 delivers the...
    471M06600
    SKU:
    471M06600
    Availability:
    Ships Same Business Day
    Weight:
    0.65 LBS
    PISTON MATERIAL:
    4032 ALUMINUM ALLOY
    RIDING STYLE:
    OFF-ROAD
    MODEL:
    FORGED SERIES
    PISTON DIAMETER METRIC:
    65.95 MM
    RIDING STYLE:
    ADVENTURE TOURING / DUAL-SPORT
    SKIRT COATING:
    NON-COATED
    STROKE LENGTH METRIC:
    50.00 MM
    UNITS:
    KIT
    BORE - OVERSIZE METRIC:
    STANDARD
    BORE SIZE METRIC:
    66.00 MM
    DISPLACEMENT:
    172 CC
    BORE - OVERSIZE:
    STANDARD
    ENGINE TYPE:
    2-STROKE
    PRODUCT NAME:
    PISTON KIT
    RIDING STYLE:
    ATV
    Qty in Cart: 0
    Quantity:
    Price:
    $162.95
    Subtotal:
  • Wiseco 66.00mm Piston Kit for Honda CR250R 1981-1983 466M06600

    Wiseco 66.00mm Piston Kit for Honda CR250R 1981-1983 466M06600

    WISECO

    $199.95
    If you're running a CR250R that demands reliability under race conditions or high-RPM trail abuse, a worn piston directly kills performance and invites catastrophic failure. The Wiseco 466M06600 delivers the precision bore diameter and material science...
    466M06600
    SKU:
    466M06600
    Availability:
    Ships Same Business Day
    Weight:
    0.55 LBS
    PISTON DIAMETER METRIC:
    65.95 MM
    PISTON MATERIAL:
    4032 ALUMINUM ALLOY
    ENGINE TYPE:
    2-STROKE
    RIDING STYLE:
    OFF-ROAD
    SKIRT COATING:
    NON-COATED
    STROKE LENGTH METRIC:
    72.00 MM
    UNITS:
    KIT
    BORE - OVERSIZE:
    STANDARD
    BORE - OVERSIZE METRIC:
    STANDARD
    PRODUCT NAME:
    PISTON KIT
    BORE SIZE METRIC:
    66.00 MM
    DISPLACEMENT:
    246 CC
    MODEL:
    FORGED SERIES
    $199.95
    Qty in Cart: 0
    Quantity:
    Price:
    $199.95
    Subtotal:
  • Wiseco Piston Kit 39.50mm for KTM 50 SX 2009-2022 874M03950

    Wiseco Piston Kit 39.50mm for KTM 50 SX 2009-2022 874M03950

    WISECO

    $121.95
    The Wiseco 874M03950 Pro-Lite Piston Kit is engineered to maximize combustion efficiency and responsiveness in your KTM 50 SX, delivering the precision tolerances and lightweight construction that competitive riders demand. Whether you're chasing lap...
    09103963
    SKU:
    09103963
    Availability:
    Ships Same Business Day
    Weight:
    0.25 LBS
    DISPLACEMENT:
    49 CC
    BORE SIZE METRIC:
    39.50 MM
    RIDING STYLE:
    OFF-ROAD
    STROKE LENGTH METRIC:
    40.00 MM
    BORE - OVERSIZE:
    STANDARD
    BORE - OVERSIZE METRIC:
    STANDARD
    ENGINE TYPE:
    2-STROKE
    PISTON MATERIAL:
    ALUMINUM ALLOY
    PRODUCT NAME:
    PISTON
    UNITS:
    EACH
    PISTON MATERIAL:
    FORGED
    Qty in Cart: 0
    Quantity:
    Price:
    $121.95
    Subtotal:
  • Wiseco Piston Kit Kawasaki KX85 2014-2024 879M04850

    Wiseco Piston Kit Kawasaki KX85 2014-2024 879M04850

    WISECO

    $132.95
    The Kawasaki KX85 demands a piston that can handle the demands of 2-stroke racing without compromise. Wiseco's 879M04850 delivers the precision tolerances and material durability needed to sustain peak power output while resisting the thermal stress and...
    09103964
    SKU:
    09103964
    Availability:
    Ships Same Business Day
    Weight:
    0.25 LBS
    BORE - OVERSIZE:
    STANDARD
    BORE - OVERSIZE METRIC:
    STANDARD
    DISPLACEMENT:
    85 CC
    ENGINE TYPE:
    2-STROKE
    RIDING STYLE:
    OFF-ROAD
    BORE SIZE METRIC:
    48.50 MM
    PISTON MATERIAL:
    ALUMINUM ALLOY
    PISTON MATERIAL:
    FORGED
    PRODUCT NAME:
    PISTON
    UNITS:
    EACH
    STROKE LENGTH METRIC:
    45.80 MM
    Qty in Cart: 0
    Quantity:
    Price:
    $132.95
    Subtotal:
  • Wiseco Piston Kit Kawasaki KX100 2014-2021 880M05250

    Wiseco Piston Kit Kawasaki KX100 2014-2021 880M05250

    WISECO

    $138.95
    Your KX100's factory piston won't cut it if you're pushing harder on the track or trail. The Wiseco 880M05250 Pro-Lite delivers measurable gains in compression efficiency and engine durability through precision engineering and high-silicon aluminum...
    09103965
    SKU:
    09103965
    Availability:
    Ships Same Business Day
    Weight:
    0.40 LBS
    BORE - OVERSIZE:
    STANDARD
    ENGINE TYPE:
    2-STROKE
    RIDING STYLE:
    OFF-ROAD
    BORE SIZE METRIC:
    52.50 MM
    BORE - OVERSIZE METRIC:
    STANDARD
    DISPLACEMENT:
    99 CC
    PISTON MATERIAL:
    ALUMINUM ALLOY
    PISTON MATERIAL:
    FORGED
    PRODUCT NAME:
    PISTON
    UNITS:
    EACH
    STROKE LENGTH METRIC:
    45.80 MM
    $138.95
    Qty in Cart: 0
    Quantity:
    Price:
    $138.95
    Subtotal:
  • Wiseco Piston Kit Kawasaki KX450F 2013-2018 12.5:1 Compression 40082M09600

    Wiseco Piston Kit Kawasaki KX450F 2013-2018 12.5:1 Compression 40082M09600

    WISECO

    $255.95
    If you're running a KX450F at the edge of its limits, a worn or stock piston limits your engine's potential for power and reliability. The Wiseco 40082M09600 delivers a 12.5:1 compression ratio that extracts measurable gains in horsepower and torque...
    09103172
    SKU:
    09103172
    Availability:
    Ships Same Business Day
    Weight:
    1.10 LBS
    BORE - OVERSIZE:
    STANDARD
    COMPRESSION RATIO IMPERIAL:
    12.5:1
    RIDING STYLE:
    OFF-ROAD
    STROKE LENGTH METRIC:
    62.10 MM
    BORE - OVERSIZE METRIC:
    STANDARD
    ENGINE TYPE:
    4-STROKE
    PISTON MATERIAL:
    ALUMINUM ALLOY
    PISTON MATERIAL:
    FORGED
    PRODUCT NAME:
    PISTON
    UNITS:
    EACH
    BORE SIZE METRIC:
    96.00 MM
    DISPLACEMENT:
    449 CC
    Qty in Cart: 0
    Quantity:
    Price:
    $255.95
    Subtotal:
  • Wiseco Piston Kit Racer Elite 96mm 14:1 Compression Honda TRX450R 2006-2009 RE817M09600

    Wiseco Piston Kit Racer Elite 96mm 14:1 Compression Honda TRX450R 2006-2009 RE817M09600

    WISECO

    $388.95
    If you're running a Honda TRX450R or TRX450ER, this piston kit delivers the compression ratio and durability you need to extract real power gains without compromising reliability. The 14:1 compression ratio increases torque response and throttle snap,...
    09105126
    SKU:
    09105126
    Availability:
    Ships Same Business Day
    Weight:
    1.06 LBS
    BORE SIZE METRIC:
    96.00 MM
    PRODUCT NAME:
    PISTON KIT
    BORE - OVERSIZE METRIC:
    STANDARD
    SKIRT COATING:
    ARMORGLIDE®
    UNITS:
    KIT
    BORE - OVERSIZE:
    STANDARD
    COMPRESSION RATIO IMPERIAL:
    14.0:1
    RIDING STYLE:
    ATV
    $388.95
    Qty in Cart: 0
    Quantity:
    Price:
    $388.95
    Subtotal:
  • Total: items /

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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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