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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
  • Wossner Piston Kit 76.97mm Suzuki RM-Z250 2004-2006 8582DB

    Wossner Piston Kit 76.97mm Suzuki RM-Z250 2004-2006 8582DB

    WOSSNER

    $184.00
    When you're pushing your RM-Z250 to the limit, a factory piston simply won't cut it. The Wossner 8582DB delivers the durability and thermal stability required for sustained high-RPM performance, while its permanent skirt coating reduces friction and...
    09104936
    SKU:
    09104936
    Availability:
    Ships Same Business Day
    Weight:
    0.55 LBS
    BORE - OVERSIZE METRIC:
    +0.01 MM
    RIDING STYLE:
    OFF-ROAD
    UNITS:
    KIT
    COMPRESSION RATIO IMPERIAL:
    12.6:1
    ENGINE TYPE:
    4-STROKE
    PISTON MATERIAL:
    ALUMINUM ALLOY
    PRODUCT NAME:
    PISTON KIT
    BORE - OVERSIZE:
    +0,01 MM
    MODEL:
    STANDARD SERIES
    BORE SIZE METRIC:
    77.01 MM
    PISTON MATERIAL:
    FORGED
    PISTON SIZE METRIC:
    76.97 MM
    $184.00
    Qty in Cart: 0
    Quantity:
    Price:
    $184.00
    Subtotal:
  • Wossner Piston Kit 76.80mm 13.9:1 Compression Honda CRF-250R 2010-2013 8775DA

    Wossner Piston Kit 76.80mm 13.9:1 Compression Honda CRF-250R 2010-2013 8775DA

    WOSSNER

    $204.00
    Stock pistons simply can't handle the demands of high-performance riding—heat, detonation, and wear will cut your engine life short. The Wössner 8775DA delivers the durability and precision you need to push your CRF-250R to its limits without compromise...
    09104980
    SKU:
    09104980
    Availability:
    Ships Same Business Day
    Weight:
    0.60 LBS
    BORE - OVERSIZE:
    STANDARD
    BORE - OVERSIZE METRIC:
    STANDARD
    PISTON MATERIAL:
    FORGED
    PISTON SIZE METRIC:
    76.76 MM
    RIDING STYLE:
    OFF-ROAD
    BORE SIZE METRIC:
    76.80 MM
    ENGINE TYPE:
    4-STROKE
    MODEL:
    PRO SERIES
    PISTON MATERIAL:
    ALUMINUM ALLOY
    PRODUCT NAME:
    PISTON KIT
    COMPRESSION RATIO IMPERIAL:
    14.2:1
    UNITS:
    KIT
    $204.00
    Qty in Cart: 0
    Quantity:
    Price:
    $204.00
    Subtotal:
  • Wossner Piston Kit Suzuki RM-Z250 2010-2025 76.96mm 8781DA

    Wossner Piston Kit Suzuki RM-Z250 2010-2025 76.96mm 8781DA

    WOSSNER

    $184.00
    The Wossner 8781DA piston kit is purpose-built for serious RM-Z250 riders who demand reliability and consistent performance across high-RPM, high-load riding conditions. Factory pistons wear out faster under aggressive use—this German-engineered...
    09104983
    SKU:
    09104983
    Availability:
    Ships Same Business Day
    Weight:
    0.60 LBS
    MODEL:
    PRO SERIES
    RIDING STYLE:
    OFF-ROAD
    UNITS:
    KIT
    PISTON SIZE METRIC:
    76.96 MM
    BORE - OVERSIZE:
    STANDARD
    BORE SIZE METRIC:
    77.00 MM
    ENGINE TYPE:
    4-STROKE
    PISTON MATERIAL:
    ALUMINUM ALLOY
    PISTON MATERIAL:
    FORGED
    BORE - OVERSIZE METRIC:
    STANDARD
    COMPRESSION RATIO IMPERIAL:
    13.6:1
    PRODUCT NAME:
    PISTON KIT
    $184.00
    Qty in Cart: 0
    Quantity:
    Price:
    $184.00
    Subtotal:
  • Wossner 76.97mm Piston Kit for Suzuki RM-Z250 2010-2019 8781DB

    Wossner 76.97mm Piston Kit for Suzuki RM-Z250 2010-2019 8781DB

    WOSSNER

    $184.00
    If you're running a RM-Z250 and expecting reliable power delivery through every race, a quality piston kit isn't negotiable. Worn or stock pistons compromise combustion efficiency, increase friction losses, and shorten engine life—especially in 2-stroke...
    09104984
    SKU:
    09104984
    Availability:
    Ships Same Business Day
    Weight:
    0.55 LBS
    BORE - OVERSIZE METRIC:
    +0.01 MM
    ENGINE TYPE:
    4-STROKE
    MODEL:
    PRO SERIES
    RIDING STYLE:
    OFF-ROAD
    UNITS:
    KIT
    PISTON MATERIAL:
    ALUMINUM ALLOY
    PISTON MATERIAL:
    FORGED
    PISTON SIZE METRIC:
    76.97 MM
    BORE - OVERSIZE:
    +0,01 MM
    BORE SIZE METRIC:
    77.01 MM
    COMPRESSION RATIO IMPERIAL:
    13.6:1
    PRODUCT NAME:
    PISTON KIT
    $184.00
    Qty in Cart: 0
    Quantity:
    Price:
    $184.00
    Subtotal:
  • Wossner Piston Kit 87.95mm KTM 350 SX-F 2011-2020 8807DA

    Wossner Piston Kit 87.95mm KTM 350 SX-F 2011-2020 8807DA

    WOSSNER

    $214.00
    The Wossner 8807DA piston kit restores your KTM 350 SX-F to factory specifications—or beyond—with OEM-quality internals that deliver reliable power across the rev range. Whether you're running stock or modified, this complete kit eliminates guesswork on...
    09104986
    SKU:
    09104986
    Availability:
    Ships Same Business Day
    Weight:
    0.80 LBS
    ENGINE TYPE:
    4-STROKE
    PISTON MATERIAL:
    ALUMINUM ALLOY
    PISTON MATERIAL:
    FORGED
    BORE - OVERSIZE:
    STANDARD
    BORE - OVERSIZE METRIC:
    STANDARD
    COMPRESSION RATIO IMPERIAL:
    13.5:1
    COMPRESSION RATIO IMPERIAL:
    14.0:1
    MODEL:
    STANDARD SERIES
    PISTON SIZE METRIC:
    87.95 MM
    RIDING STYLE:
    OFF-ROAD
    UNITS:
    KIT
    PRODUCT NAME:
    PISTON KIT
    BORE SIZE METRIC:
    88.00 MM
    COMPRESSION RATIO IMPERIAL:
    13.7:1
    COMPRESSION RATIO IMPERIAL:
    14.2:1
    $214.00
    Qty in Cart: 0
    Quantity:
    Price:
    $214.00
    Subtotal:
  • Wossner Piston Kit 87.96mm for 2011-2023 KTM 350 SX-F 8807DB

    Wossner Piston Kit 87.96mm for 2011-2023 KTM 350 SX-F 8807DB

    WOSSNER

    $214.00
    If you're running a 2011-2023 KTM 350 SX-F, piston wear directly impacts engine response, efficiency, and longevity. The Wössner 8807DB kit delivers precision-engineered replacement with premium materials and German manufacturing standards, ensuring your...
    09104987
    SKU:
    09104987
    Availability:
    Ships Same Business Day
    Weight:
    0.75 LBS
    COMPRESSION RATIO IMPERIAL:
    13.7:1
    COMPRESSION RATIO IMPERIAL:
    14.2:1
    BORE - OVERSIZE:
    +0,01 MM
    BORE - OVERSIZE METRIC:
    +0.01 MM
    BORE SIZE METRIC:
    88.01 MM
    COMPRESSION RATIO IMPERIAL:
    13.5:1
    COMPRESSION RATIO IMPERIAL:
    14.0:1
    MODEL:
    STANDARD SERIES
    PISTON SIZE METRIC:
    87.96 MM
    RIDING STYLE:
    OFF-ROAD
    UNITS:
    KIT
    PRODUCT NAME:
    PISTON KIT
    ENGINE TYPE:
    4-STROKE
    PISTON MATERIAL:
    ALUMINUM ALLOY
    PISTON MATERIAL:
    FORGED
    Qty in Cart: 0
    Quantity:
    Price:
    $214.00
    Subtotal:
  • Wossner Piston Kit 87.97mm for KTM 350 SX-F 2011-2022 8807DC

    Wossner Piston Kit 87.97mm for KTM 350 SX-F 2011-2022 8807DC

    WOSSNER

    $214.00
    The stock piston in your KTM 350 SX-F experiences significant thermal and mechanical stress during aggressive riding. A quality replacement piston kit restores compression, reduces friction losses, and extends engine life—especially critical if you're...
    09104988
    SKU:
    09104988
    Availability:
    Ships Same Business Day
    Weight:
    0.75 LBS
    BORE - OVERSIZE:
    +0,02 MM
    COMPRESSION RATIO IMPERIAL:
    13.7:1
    COMPRESSION RATIO IMPERIAL:
    14.2:1
    ENGINE TYPE:
    4-STROKE
    PRODUCT NAME:
    PISTON KIT
    BORE - OVERSIZE METRIC:
    +0.02 MM
    COMPRESSION RATIO IMPERIAL:
    14.0:1
    MODEL:
    STANDARD SERIES
    RIDING STYLE:
    OFF-ROAD
    UNITS:
    KIT
    BORE SIZE METRIC:
    88.02 MM
    COMPRESSION RATIO IMPERIAL:
    13.5:1
    PISTON MATERIAL:
    ALUMINUM ALLOY
    PISTON MATERIAL:
    FORGED
    PISTON SIZE METRIC:
    87.97 MM
    $214.00
    Qty in Cart: 0
    Quantity:
    Price:
    $214.00
    Subtotal:
  • Wossner Piston Kit 77.96mm Gas Gas EC 250 F 2021-2023 8865DA

    Wossner Piston Kit 77.96mm Gas Gas EC 250 F 2021-2023 8865DA

    WOSSNER

    $184.00
    The Wossner 8865DA piston kit delivers the reliability and precision your Gas Gas EC 250 F demands, whether you're pushing hard on the track or maintaining peak performance in the dirt. Factory pistons wear, lose compression, and cost you power—this...
    09104993
    SKU:
    09104993
    Availability:
    Ships Same Business Day
    Weight:
    0.60 LBS
    COMPRESSION RATIO IMPERIAL:
    13.9:1
    ENGINE TYPE:
    4-STROKE
    PISTON MATERIAL:
    ALUMINUM ALLOY
    RIDING STYLE:
    OFF-ROAD
    BORE - OVERSIZE:
    STANDARD
    BORE - OVERSIZE METRIC:
    STANDARD
    PISTON MATERIAL:
    FORGED
    UNITS:
    KIT
    MODEL:
    PREMIUM SERIES
    PISTON SIZE METRIC:
    77.96 MM
    BORE SIZE METRIC:
    78.00 MM
    PRODUCT NAME:
    PISTON KIT
    Qty in Cart: 0
    Quantity:
    Price:
    $184.00
    Subtotal:
  • Wossner Piston Kit Sherco 300 SEF-R 2014-2018 8906DA

    Wossner Piston Kit Sherco 300 SEF-R 2014-2018 8906DA

    WOSSNER

    $214.00
    When you're pushing a 2-stroke to its limits, piston failure isn't an option—it's a catastrophe. The Wossner 8906DA delivers the durability and precision engineering needed to survive high-RPM abuse while maintaining the power output your bike demands...
    09104998
    SKU:
    09104998
    Availability:
    Ships Same Business Day
    Weight:
    0.70 LBS
    PISTON SIZE METRIC:
    83.94 MM
    UNITS:
    KIT
    MODEL:
    STANDARD SERIES
    RIDING STYLE:
    OFF-ROAD
    COMPRESSION RATIO IMPERIAL:
    OEM
    ENGINE TYPE:
    4-STROKE
    PISTON MATERIAL:
    ALUMINUM ALLOY
    PRODUCT NAME:
    PISTON KIT
    BORE - OVERSIZE:
    STANDARD
    BORE - OVERSIZE METRIC:
    STANDARD
    BORE SIZE METRIC:
    84.00 MM
    PISTON MATERIAL:
    FORGED
    $214.00
    Qty in Cart: 0
    Quantity:
    Price:
    $214.00
    Subtotal:
  • Wossner Piston Kit Honda CRF450R 2017-2025 14.0:1 8937DA

    Wossner Piston Kit Honda CRF450R 2017-2025 14.0:1 8937DA

    WOSSNER

    $214.00
    Stock pistons can't handle the demands of high-performance riding—heat cycling, detonation, and sustained RPMs break them down. The Wössner Piston Kit for your CRF450R replaces worn or damaged pistons with OEM-grade engineering while reducing friction...
    09106159
    SKU:
    09106159
    Availability:
    Ships Same Business Day
    Weight:
    0.80 LBS
    BORE SIZE METRIC:
    96.00 MM
    PRODUCT NAME:
    PISTON KIT
    PISTON SIZE METRIC:
    95.95 MM
    PISTON MATERIAL:
    FORGED
    UNITS:
    KIT
    BORE - OVERSIZE:
    STANDARD
    BORE - OVERSIZE METRIC:
    STANDARD
    COMPRESSION RATIO IMPERIAL:
    14.0:1
    ENGINE TYPE:
    4-STROKE
    MODEL:
    PRO SERIES
    PISTON MATERIAL:
    ALUMINUM ALLOY
    RIDING STYLE:
    OFF-ROAD
    $214.00
    Qty in Cart: 0
    Quantity:
    Price:
    $214.00
    Subtotal:
  • Wossner Piston Kit Kawasaki KX450F 2015 12.8:1 8920DA

    Wossner Piston Kit Kawasaki KX450F 2015 12.8:1 8920DA

    WOSSNER

    $204.00
    The Wossner Piston Kit is engineered specifically for the Kawasaki KX450F to deliver the reliability and performance demanded by serious racers and high-mileage riders. Stock pistons wear under sustained competition and aggressive riding conditions—this...
    09106163
    SKU:
    09106163
    Availability:
    Ships Same Business Day
    Weight:
    0.85 LBS
    COMPRESSION RATIO IMPERIAL:
    12.8:1
    PISTON MATERIAL:
    FORGED
    BORE - OVERSIZE:
    STANDARD
    BORE - OVERSIZE METRIC:
    STANDARD
    ENGINE TYPE:
    4-STROKE
    PISTON MATERIAL:
    ALUMINUM ALLOY
    PISTON SIZE METRIC:
    95.98 MM
    PRODUCT NAME:
    PISTON KIT
    BORE SIZE METRIC:
    96.03 MM
    MODEL:
    STANDARD SERIES
    RIDING STYLE:
    OFF-ROAD
    UNITS:
    KIT
    $204.00
    Qty in Cart: 0
    Quantity:
    Price:
    $204.00
    Subtotal:
  • Wossner Piston Kit Kawasaki KX450F 2016-2018 8931DA

    Wossner Piston Kit Kawasaki KX450F 2016-2018 8931DA

    WOSSNER

    $204.00
    The Wossner Piston Kit is engineered to restore or upgrade your KX450F's top-end with German precision and proven durability. OEM pistons wear, lose ring seal, and reduce power—this complete kit eliminates guesswork with factory-spec fitment and premium...
    09106164
    SKU:
    09106164
    Availability:
    Ships Same Business Day
    Weight:
    0.85 LBS
    COMPRESSION RATIO IMPERIAL:
    12.8:1
    PISTON MATERIAL:
    ALUMINUM ALLOY
    PISTON MATERIAL:
    FORGED
    BORE SIZE METRIC:
    96.03 MM
    MODEL:
    STANDARD SERIES
    BORE - OVERSIZE:
    STANDARD
    BORE - OVERSIZE METRIC:
    STANDARD
    ENGINE TYPE:
    4-STROKE
    PISTON SIZE METRIC:
    95.98 MM
    PRODUCT NAME:
    PISTON KIT
    RIDING STYLE:
    OFF-ROAD
    UNITS:
    KIT
    Qty in Cart: 0
    Quantity:
    Price:
    $204.00
    Subtotal:
  • Wossner Piston Kit Kawasaki KX250F 2017-2018 14.0:1 CR 8932DA

    Wossner Piston Kit Kawasaki KX250F 2017-2018 14.0:1 CR 8932DA

    WOSSNER

    $204.00
    When you're pushing your KX250F to its limits, your piston needs to match your ambition. The Wössner 8932DA delivers the precision engineering and durability required to handle aggressive riding without compromise. Built with German engineering standards...
    09106165
    SKU:
    09106165
    Availability:
    Ships Same Business Day
    Weight:
    0.50 LBS
    BORE - OVERSIZE METRIC:
    STANDARD
    ENGINE TYPE:
    4-STROKE
    PISTON MATERIAL:
    ALUMINUM ALLOY
    PISTON MATERIAL:
    FORGED
    PISTON SIZE METRIC:
    76.96 MM
    COMPRESSION RATIO IMPERIAL:
    14.0:1
    MODEL:
    PREMIUM SERIES
    RIDING STYLE:
    OFF-ROAD
    UNITS:
    KIT
    BORE - OVERSIZE:
    STANDARD
    PRODUCT NAME:
    PISTON KIT
    BORE SIZE METRIC:
    77.00 MM
    Qty in Cart: 0
    Quantity:
    Price:
    $204.00
    Subtotal:
  • Wossner Piston Kit Kawasaki KX250F 2017-2018 14.0:1 CR 8932DB

    Wossner Piston Kit Kawasaki KX250F 2017-2018 14.0:1 CR 8932DB

    WOSSNER

    $204.00
    When you're pushing your KX250F to the limit, stock pistons become your weakest link. The Wossner 14.0:1 CR piston kit delivers the thermal stability and precision clearances required to survive aggressive riding and racing conditions while maintaining...
    09106166
    SKU:
    09106166
    Availability:
    Ships Same Business Day
    Weight:
    0.50 LBS
    BORE - OVERSIZE METRIC:
    +0.01 MM
    BORE - OVERSIZE:
    +0,01 MM
    COMPRESSION RATIO IMPERIAL:
    14.0:1
    PISTON SIZE METRIC:
    76.97 MM
    RIDING STYLE:
    OFF-ROAD
    UNITS:
    KIT
    BORE SIZE METRIC:
    77.01 MM
    PRODUCT NAME:
    PISTON KIT
    ENGINE TYPE:
    4-STROKE
    MODEL:
    PREMIUM SERIES
    PISTON MATERIAL:
    ALUMINUM ALLOY
    PISTON MATERIAL:
    FORGED
    Qty in Cart: 0
    Quantity:
    Price:
    $204.00
    Subtotal:
  • Wossner Piston Kit KTM 350 EXC-F 2012-2016 8941DA

    Wossner Piston Kit KTM 350 EXC-F 2012-2016 8941DA

    WOSSNER

    $214.00
    Stock pistons wear out—especially in high-performance applications where aggressive riding and forced induction push your EXC-F 350 to its limits. The Wössner 8941DA gives you German-engineered durability and reduced friction losses that translate to...
    09106167
    SKU:
    09106167
    Availability:
    Ships Same Business Day
    Weight:
    0.32 LBS
    PRODUCT NAME:
    PISTON KIT
    RIDING STYLE:
    STREET
    BORE SIZE METRIC:
    88.00 MM
    PISTON MATERIAL:
    FORGED
    PISTON SIZE METRIC:
    87.95 MM
    UNITS:
    KIT
    BORE - OVERSIZE:
    STANDARD
    BORE - OVERSIZE METRIC:
    STANDARD
    COMPRESSION RATIO IMPERIAL:
    12.5:1
    ENGINE TYPE:
    4-STROKE
    MODEL:
    PRO SERIES
    PISTON MATERIAL:
    ALUMINUM ALLOY
    $214.00
    Qty in Cart: 0
    Quantity:
    Price:
    $214.00
    Subtotal:
  • Wossner Piston Kit Kawasaki KX450 2019-2023 12.6:1 8958DA

    Wossner Piston Kit Kawasaki KX450 2019-2023 12.6:1 8958DA

    WOSSNER

    $204.00
    When you're pushing a KX450 to its limits, your piston is taking a beating—and a worn or inadequate unit will cost you horsepower, throttle response, and reliability. The Wossner 8958DA is purpose-built for serious riders who demand repeatable...
    09106168
    SKU:
    09106168
    Availability:
    Ships Same Business Day
    Weight:
    0.85 LBS
    BORE SIZE METRIC:
    96.00 MM
    PRODUCT NAME:
    PISTON KIT
    PISTON MATERIAL:
    ALUMINUM ALLOY
    PISTON MATERIAL:
    FORGED
    PISTON SIZE METRIC:
    95.96 MM
    BORE - OVERSIZE:
    STANDARD
    BORE - OVERSIZE METRIC:
    STANDARD
    COMPRESSION RATIO IMPERIAL:
    12.6:1
    ENGINE TYPE:
    4-STROKE
    MODEL:
    PREMIUM SERIES
    RIDING STYLE:
    OFF-ROAD
    UNITS:
    KIT
    $204.00
    Qty in Cart: 0
    Quantity:
    Price:
    $204.00
    Subtotal:
  • Wossner Piston Kit Kawasaki KX450 2019-2023 12.6:1 CR 8958DB

    Wossner Piston Kit Kawasaki KX450 2019-2023 12.6:1 CR 8958DB

    WOSSNER

    $204.00
    The Wossner Piston Kit for your KX450 delivers the durability and thermal stability demanded by modern motocross competition. With 4032 T6 forged aluminum construction and a permanent skirt coating, this German-engineered piston minimizes friction while...
    09106169
    SKU:
    09106169
    Availability:
    Ships Same Business Day
    Weight:
    0.85 LBS
    PISTON SIZE METRIC:
    95.97 MM
    PRODUCT NAME:
    PISTON KIT
    BORE - OVERSIZE:
    +0,01 MM
    BORE - OVERSIZE METRIC:
    +0.01 MM
    BORE SIZE METRIC:
    96.01 MM
    COMPRESSION RATIO IMPERIAL:
    12.6:1
    ENGINE TYPE:
    4-STROKE
    PISTON MATERIAL:
    ALUMINUM ALLOY
    PISTON MATERIAL:
    FORGED
    MODEL:
    PREMIUM SERIES
    RIDING STYLE:
    OFF-ROAD
    UNITS:
    KIT
    $204.00
    Qty in Cart: 0
    Quantity:
    Price:
    $204.00
    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 superior materials and German engineering designed to...
    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 engineering and durability you need to keep your engine...
    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 pistons wear, lose compression, and create excess noise—this...
    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:
  • 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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