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Dirt Bike Engine

Dirt Bike Engine

Dirt Bike Engine

Discover a full range of dirt bike engine components for rebuilding or upgrading your performance. 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.

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  • BBR MOTORSPORTS Piston Kit - 143cc 411-KLX-1411

    BBR MOTORSPORTS Piston Kit - 143cc 411-KLX-1411

    BBR MOTORSPORTS

    $146.95
    BBR MOTORSPORTS Piston Kit 143cc 411-KLX-1411Replacement piston kit includes piston, rings, pin and clips
    09100720
    SKU:
    09100720
    Availability:
    Ships Same Business Day
    Weight:
    0.45 LBS
    DISPLACEMENT:
    143 CC
    PISTON MATERIAL:
    ALUMINUM
    PRODUCT NAME:
    PISTON KIT
    RIDING STYLE:
    OFF-ROAD
    STYLE:
    BIG BORE
    UNITS:
    KIT
    $146.95
    Qty in Cart: 0
    Quantity:
    Price:
    $146.95
    Subtotal:
  • ATHENA Piston Kit S4F06600002C

    ATHENA Piston Kit S4F06600002C

    ATHENA

    $109.95
    ATHENA Piston Kit S4F06600002CTwo-stroke pistons are made from 4032 silicium, Four-stroke pistons are made from 2618 silicium - the same material used to produce Formula 1 pistons, Both include 3% copper in materials for better heat resistance, All...
    09100452
    SKU:
    09100452
    Availability:
    Ships Same Business Day
    Weight:
    0.62 LBS
    ENGINE TYPE:
    2-STROKE
    PISTON MATERIAL:
    4032 ALUMINUM ALLOY
    RIDING STYLE:
    OFF-ROAD
    UNITS:
    KIT
    BORE SIZE METRIC:
    65.96 MM
    DISPLACEMENT:
    198 CC
    PISTON HEAD SHAPE:
    FLAT TOP
    TYPE:
    C
    COMPRESSION RATIO IMPERIAL:
    STOCK
    PRODUCT NAME:
    PISTON KIT
    Qty in Cart: 0
    Quantity:
    Price:
    $109.95
    Subtotal:
  • ATHENA Piston Kit S4F10000007A

    ATHENA Piston Kit S4F10000007A

    ATHENA

    $240.95
    ATHENA Piston Kit S4F10000007AIncludes rings, clips and pin, Easy-to-follow step-by-step installation instructions
    09100255
    SKU:
    09100255
    Availability:
    Ships Same Business Day
    Weight:
    0.95 LBS
    COMPRESSION RATIO IMPERIAL:
    11.6:1
    PISTON SIZE METRIC:
    STANDARD SIZE A
    PISTON DIAMETER METRIC:
    99.95 MM
    RIDING STYLE:
    ATV
    PRODUCT NAME:
    PISTON
    RIDING STYLE:
    OFF-ROAD
    STYLE:
    BIG BORE
    ENGINE TYPE:
    4-STROKE
    UNITS:
    EACH
    Qty in Cart: 0
    Quantity:
    Price:
    $240.95
    Subtotal:
  • ATHENA Piston Kit S4C05400010A

    ATHENA Piston Kit S4C05400010A

    ATHENA

    $120.95
    ATHENA Piston Kit S4C05400010AIncludes rings, clips and pin, Easy-to-follow step-by-step installation instructions
    09100253
    SKU:
    09100253
    Availability:
    Ships Same Business Day
    Weight:
    0.40 LBS
    ENGINE TYPE:
    2-STROKE
    PISTON DIAMETER METRIC:
    53.94 MM
    PISTON SIZE METRIC:
    STANDARD SIZE A
    STYLE:
    STANDARD BORE
    UNITS:
    EACH
    COMPRESSION RATIO IMPERIAL:
    14.8:1
    RIDING STYLE:
    OFF-ROAD
    PRODUCT NAME:
    PISTON
    $120.95
    Qty in Cart: 0
    Quantity:
    Price:
    $120.95
    Subtotal:
  • ATHENA Piston Kit S4F07200001C

    ATHENA Piston Kit S4F07200001C

    ATHENA

    $235.95
    ATHENA Piston Kit S4F07200001CTwo-stroke pistons are made from 4032 silicium, Four-stroke pistons are made from 2618 silicium - the same material used to produce Formula 1 pistons, Both include 3% copper in materials for better heat resistance, All...
    09100174
    SKU:
    09100174
    Availability:
    Ships Same Business Day
    Weight:
    0.59 LBS
    ENGINE TYPE:
    2-STROKE
    COMPRESSION RATIO IMPERIAL:
    STOCK
    DISPLACEMENT:
    300 CC
    PISTON MATERIAL:
    4032 ALUMINUM ALLOY
    RIDING STYLE:
    OFF-ROAD
    UNITS:
    KIT
    BORE SIZE METRIC:
    71.95 MM
    PISTON HEAD SHAPE:
    FLAT TOP
    PRODUCT NAME:
    PISTON KIT
    TYPE:
    C
    Qty in Cart: 0
    Quantity:
    Price:
    $235.95
    Subtotal:
  • ATHENA Piston Kit S4F07200001B

    ATHENA Piston Kit S4F07200001B

    ATHENA

    $223.95
    ATHENA Piston Kit S4F07200001BTwo-stroke pistons are made from 4032 silicium, Four-stroke pistons are made from 2618 silicium - the same material used to produce Formula 1 pistons, Both include 3% copper in materials for better heat resistance, All...
    09100173
    SKU:
    09100173
    Availability:
    Ships Same Business Day
    Weight:
    0.71 LBS
    PISTON MATERIAL:
    4032 ALUMINUM ALLOY
    COMPRESSION RATIO IMPERIAL:
    STOCK
    DISPLACEMENT:
    300 CC
    RIDING STYLE:
    OFF-ROAD
    UNITS:
    KIT
    BORE SIZE METRIC:
    71.94 MM
    ENGINE TYPE:
    2-STROKE
    TYPE:
    B
    PISTON HEAD SHAPE:
    FLAT TOP
    PRODUCT NAME:
    PISTON KIT
    Qty in Cart: 0
    Quantity:
    Price:
    $223.95
    Subtotal:
  • ATHENA Piston Kit S4F07200001A ATHENA Piston Kit S4F07200001A

    ATHENA Piston Kit S4F07200001A

    ATHENA

    $225.95
    ATHENA Piston Kit S4F07200001ATwo-stroke pistons are made from 4032 silicium, Four-stroke pistons are made from 2618 silicium - the same material used to produce Formula 1 pistons, Both include 3% copper in materials for better heat resistance, All...
    09100172
    SKU:
    09100172
    Availability:
    Ships Same Business Day
    Weight:
    0.59 LBS
    PRODUCT NAME:
    PISTON KIT
    TYPE:
    A
    BORE SIZE METRIC:
    71.93 MM
    PISTON HEAD SHAPE:
    FLAT TOP
    COMPRESSION RATIO IMPERIAL:
    STOCK
    DISPLACEMENT:
    300 CC
    ENGINE TYPE:
    2-STROKE
    PISTON MATERIAL:
    4032 ALUMINUM ALLOY
    RIDING STYLE:
    OFF-ROAD
    UNITS:
    KIT
    Qty in Cart: 0
    Quantity:
    Price:
    $225.95
    Subtotal:
  • ATHENA Piston Kit S4F06900001C

    ATHENA Piston Kit S4F06900001C

    ATHENA

    $162.95
    ATHENA Piston Kit S4F06900001CTwo-stroke pistons are made from 4032 silicium, Four-stroke pistons are made from 2618 silicium - the same material used to produce Formula 1 pistons, Both include 3% copper in materials for better heat resistance, All...
    09100170
    SKU:
    09100170
    Availability:
    Ships Same Business Day
    Weight:
    0.65 LBS
    DISPLACEMENT:
    220 CC
    ENGINE TYPE:
    2-STROKE
    BORE SIZE METRIC:
    68.96 MM
    PISTON HEAD SHAPE:
    DOMED
    PISTON MATERIAL:
    4032 ALUMINUM ALLOY
    RIDING STYLE:
    OFF-ROAD
    COMPRESSION RATIO IMPERIAL:
    STOCK
    PRODUCT NAME:
    PISTON KIT
    TYPE:
    C
    UNITS:
    KIT
    $162.95
    Qty in Cart: 0
    Quantity:
    Price:
    $162.95
    Subtotal:
  • ATHENA Piston Kit S4F06900001B

    ATHENA Piston Kit S4F06900001B

    ATHENA

    $170.95
    ATHENA Piston Kit S4F06900001BTwo-stroke pistons are made from 4032 silicium, Four-stroke pistons are made from 2618 silicium - the same material used to produce Formula 1 pistons, Both include 3% copper in materials for better heat resistance, All...
    09100169
    SKU:
    09100169
    Availability:
    Ships Same Business Day
    Weight:
    0.62 LBS
    BORE SIZE METRIC:
    68.95 MM
    DISPLACEMENT:
    220 CC
    PISTON HEAD SHAPE:
    DOMED
    PISTON MATERIAL:
    4032 ALUMINUM ALLOY
    RIDING STYLE:
    OFF-ROAD
    UNITS:
    KIT
    ENGINE TYPE:
    2-STROKE
    COMPRESSION RATIO IMPERIAL:
    STOCK
    PRODUCT NAME:
    PISTON KIT
    TYPE:
    B
    Qty in Cart: 0
    Quantity:
    Price:
    $170.95
    Subtotal:
  • ATHENA Piston Kit S4F06900001A ATHENA Piston Kit S4F06900001A

    ATHENA Piston Kit S4F06900001A

    ATHENA

    $162.95
    ATHENA Piston Kit S4F06900001ATwo-stroke pistons are made from 4032 silicium, Four-stroke pistons are made from 2618 silicium - the same material used to produce Formula 1 pistons, Both include 3% copper in materials for better heat resistance, All...
    09100168
    SKU:
    09100168
    Availability:
    Ships Same Business Day
    Weight:
    0.65 LBS
    DISPLACEMENT:
    220 CC
    TYPE:
    A
    ENGINE TYPE:
    2-STROKE
    BORE SIZE METRIC:
    68.94 MM
    PISTON HEAD SHAPE:
    DOMED
    PISTON MATERIAL:
    4032 ALUMINUM ALLOY
    RIDING STYLE:
    OFF-ROAD
    COMPRESSION RATIO IMPERIAL:
    STOCK
    PRODUCT NAME:
    PISTON KIT
    UNITS:
    KIT
    $162.95
    Qty in Cart: 0
    Quantity:
    Price:
    $162.95
    Subtotal:
  • ATHENA Piston Kit S4F06640007A

    ATHENA Piston Kit S4F06640007A

    ATHENA

    $164.95
    ATHENA Piston Kit S4F06640007ATwo-stroke pistons are made from 4032 silicium, Four-stroke pistons are made from 2618 silicium - the same material used to produce Formula 1 pistons, Both include 3% copper in materials for better heat resistance, All...
    09100131
    SKU:
    09100131
    Availability:
    Ships Same Business Day
    Weight:
    0.62 LBS
    COMPRESSION RATIO IMPERIAL:
    STOCK
    ENGINE TYPE:
    2-STROKE
    PISTON MATERIAL:
    4032 ALUMINUM ALLOY
    RIDING STYLE:
    OFF-ROAD
    UNITS:
    KIT
    BORE SIZE METRIC:
    66.34 MM
    PISTON HEAD SHAPE:
    FLAT TOP
    DISPLACEMENT:
    250 CC
    PRODUCT NAME:
    PISTON KIT
    TYPE:
    A
    Qty in Cart: 0
    Quantity:
    Price:
    $164.95
    Subtotal:
  • Wiseco Engine Rebuild Kit 2002-2006 KTM 125 SX PWR153-101

    Wiseco Engine Rebuild Kit 2002-2006 KTM 125 SX PWR153-101

    WISECO

    $664.95
    WISECO Engine Rebuild Kit PWR153-101 Revitalize your engine with the WISECO Engine Rebuild Kit PWR153-101, designed for both performance and longevity. This comprehensive kit includes everything you need for a complete engine overhaul, ensuring your...
    09031616
    SKU:
    09031616
    Availability:
    Ships Same Business Day
    Weight:
    10.55 LBS
    BORE SIZE METRIC:
    54.00 MM
    UNITS:
    KIT
    BORE - OVERSIZE:
    STANDARD
    BORE - OVERSIZE METRIC:
    STANDARD
    RIDING STYLE:
    OFF-ROAD
    PRODUCT NAME:
    REBUILD KIT
    TYPE:
    ENGINE
    Qty in Cart: 0
    Quantity:
    Price:
    $664.95
    Subtotal:
  • Wiseco Engine Rebuild Kit for 2004-2012 KTM 85 SX PWR162-100

    Wiseco Engine Rebuild Kit for 2004-2012 KTM 85 SX PWR162-100

    WISECO

    $469.95
    WISECO Engine Kit for 85SX (2004-2012) - PWR162-100 Revitalize your 85SX with the WISECO Engine Kit, engineered for peak performance and reliability. This comprehensive kit includes everything you need for a complete engine rebuild, ensuring your bike...
    09031540
    SKU:
    09031540
    Availability:
    Ships Same Business Day
    Weight:
    7.70 LBS
    BORE SIZE METRIC:
    47.00 MM
    FEATURES:
    GP SERIES PISTON
    UNITS:
    KIT
    DISPLACEMENT:
    85 CC
    ENGINE TYPE:
    2-STROKE
    MODEL:
    GARAGE BUDDY
    RIDING STYLE:
    OFF-ROAD
    OVERBORE METRIC:
    STANDARD
    PRODUCT NAME:
    REBUILD KIT
    TYPE:
    ENGINE
    $469.95
    Qty in Cart: 0
    Quantity:
    Price:
    $469.95
    Subtotal:
  • Wiseco Engine Rebuild Kit for 2009-2020 KTM 65 SX PWR161B-100

    Wiseco Engine Rebuild Kit for 2009-2020 KTM 65 SX PWR161B-100

    WISECO

    $469.95
    WISECO Engine Kit 65SX PWR161B-100 Revitalize your engine with the WISECO Engine Kit 65SX PWR161B-100, expertly crafted to provide everything you need for a complete rebuild. This comprehensive kit ensures optimal performance and longevity, featuring...
    09031539
    SKU:
    09031539
    Availability:
    Ships Same Business Day
    Weight:
    7.05 LBS
    PRODUCT NAME:
    REBUILD KIT
    TYPE:
    ENGINE
    ENGINE TYPE:
    2-STROKE
    OVERBORE METRIC:
    STANDARD
    BORE SIZE METRIC:
    45.00 MM
    DISPLACEMENT:
    65 CC
    FEATURES:
    PROLITE® PISTON
    MODEL:
    GARAGE BUDDY
    RIDING STYLE:
    OFF-ROAD
    UNITS:
    KIT
    $469.95
    Qty in Cart: 0
    Quantity:
    Price:
    $469.95
    Subtotal:
  • Wiseco 4-Stroke Forged Piston Kit 95mm 11:1 CR for KTM 520 EXC 2000-2002 520 SX 2000-2002 525 SX 2003-2006 525 XC 2008-2010 PK1850

    Wiseco 4-Stroke Forged Piston Kit 95mm 11:1 CR for KTM 520 EXC 2000-2002 520 SX 2000-2002 525 SX 2003-2006 525 XC 2008-2010 PK1850

    WISECO

    $339.95
    Wiseco PK1850 Piston Kit Unlock the true power of your 4-stroke engine with the Wiseco PK1850 Piston Kit, engineered for those who demand peak performance and reliability. This kit is crafted to withstand the rigors of competitive riding while enhancing...
    09031161
    SKU:
    09031161
    Availability:
    Ships Same Business Day
    Weight:
    1.80 LBS
    SKIRT COATING:
    NON-COATED
    UNITS:
    KIT
    BORE SIZE METRIC:
    95.00 MM
    MODEL:
    FORGED SERIES
    STROKE LENGTH METRIC:
    72.00 MM
    DISPLACEMENT:
    510 CC
    PRODUCT NAME:
    REBUILD KIT
    TYPE:
    TOP END
    BORE - OVERSIZE:
    STANDARD
    BORE - OVERSIZE METRIC:
    STANDARD
    COMPRESSION RATIO IMPERIAL:
    11.0:1
    ENGINE TYPE:
    4-STROKE
    PISTON DIAMETER METRIC:
    94.92 MM
    PISTON MATERIAL:
    2618 ALUMINUM ALLOY
    RIDING STYLE:
    ATV
    RIDING STYLE:
    OFF-ROAD
    $339.95
    Qty in Cart: 0
    Quantity:
    Price:
    $339.95
    Subtotal:
  • Wiseco Piston Kit with Gasket for Yamaha YZ125 2005-2020 PK1572

    Wiseco Piston Kit with Gasket for Yamaha YZ125 2005-2020 PK1572

    WISECO

    $224.95
    Wiseco PK1572 Piston Kit Unlock the full potential of your 2-stroke motorcycle with the Wiseco PK1572 Piston Kit. Designed for enthusiasts who demand peak performance and reliability, this kit ensures your engine operates at its best, whether on the...
    09031160
    SKU:
    09031160
    Availability:
    Ships Same Business Day
    Weight:
    0.85 LBS
    BORE - OVERSIZE METRIC:
    +2.00 MM
    DISPLACEMENT:
    134 CC
    ENGINE TYPE:
    2-STROKE
    PISTON DIAMETER METRIC:
    55.95 MM
    PRODUCT NAME:
    REBUILD KIT
    TYPE:
    TOP END
    MODEL:
    PRO-LITE
    RIDING STYLE:
    OFF-ROAD
    SKIRT COATING:
    NON-COATED
    STROKE LENGTH METRIC:
    54.50 MM
    UNITS:
    KIT
    BORE - OVERSIZE:
    +2,00 MM
    BORE SIZE METRIC:
    56.00 MM
    PISTON MATERIAL:
    4032 ALUMINUM ALLOY
    PISTON SIZE METRIC:
    +2.00 MM
    $224.95
    Qty in Cart: 0
    Quantity:
    Price:
    $224.95
    Subtotal:
  • Wiseco Piston Kit with Gasket for Kawasaki KX100 2014-2021 PK1910

    Wiseco Piston Kit with Gasket for Kawasaki KX100 2014-2021 PK1910

    WISECO

    $189.95
    Wiseco PK1910 Piston Kit Elevate your 2-stroke motorcycle's performance with the Wiseco PK1910 Piston Kit, engineered for superior strength and efficiency. This comprehensive kit is ideal for both competitive riders and enthusiasts, ensuring your engine...
    09031154
    SKU:
    09031154
    Availability:
    Ships Same Business Day
    Weight:
    0.90 LBS
    MODEL:
    PRO-LITE
    PISTON SIZE METRIC:
    +2.00 MM
    PRODUCT NAME:
    REBUILD KIT
    TYPE:
    TOP END
    BORE - OVERSIZE METRIC:
    +2.00 MM
    BORE SIZE METRIC:
    54.50 MM
    ENGINE TYPE:
    2-STROKE
    PISTON MATERIAL:
    4032 ALUMINUM ALLOY
    RIDING STYLE:
    OFF-ROAD
    UNITS:
    KIT
    BORE - OVERSIZE:
    +2,00 MM
    DISPLACEMENT:
    99 CC
    PISTON DIAMETER METRIC:
    54.45 MM
    SKIRT COATING:
    NON-COATED
    STROKE LENGTH METRIC:
    45.80 MM
    $189.95
    Qty in Cart: 0
    Quantity:
    Price:
    $189.95
    Subtotal:
  • Wiseco Piston Kit with Gasket for Kawasaki KX100 2014-2020 PK1908

    Wiseco Piston Kit with Gasket for Kawasaki KX100 2014-2020 PK1908

    WISECO

    $174.95
    Wiseco PK1908 Performance Piston Kit Elevate your 2-stroke motorcycle's performance with the Wiseco PK1908 Performance Piston Kit. Crafted with precision and designed for maximum efficiency, this kit is the perfect solution for riders who demand...
    09031152
    SKU:
    09031152
    Availability:
    Ships Same Business Day
    Weight:
    0.80 LBS
    MODEL:
    PRO-LITE
    PISTON DIAMETER METRIC:
    52.45 MM
    PRODUCT NAME:
    REBUILD KIT
    TYPE:
    TOP END
    BORE - OVERSIZE:
    STANDARD
    BORE - OVERSIZE METRIC:
    STANDARD
    ENGINE TYPE:
    2-STROKE
    PISTON MATERIAL:
    4032 ALUMINUM ALLOY
    RIDING STYLE:
    OFF-ROAD
    UNITS:
    KIT
    DISPLACEMENT:
    99 CC
    SKIRT COATING:
    NON-COATED
    BORE SIZE METRIC:
    52.50 MM
    STROKE LENGTH METRIC:
    45.80 MM
    $174.95
    Qty in Cart: 0
    Quantity:
    Price:
    $174.95
    Subtotal:
  • Wiseco Piston Kit with Gasket for Kawasaki KX85 2014-2020 PK1907

    Wiseco Piston Kit with Gasket for Kawasaki KX85 2014-2020 PK1907

    WISECO

    $179.95
    Wiseco PK1907 Piston Kit Transform your 2-stroke motorcycle into a powerhouse with the Wiseco PK1907 Piston Kit. Engineered for peak performance and reliability, this kit is ideal for riders who push their machines to the limit. Experience unmatched...
    09031151
    SKU:
    09031151
    Availability:
    Ships Same Business Day
    Weight:
    0.85 LBS
    BORE - OVERSIZE:
    +2,00 MM
    SKIRT COATING:
    NON-COATED
    BORE - OVERSIZE METRIC:
    +2.00 MM
    ENGINE TYPE:
    2-STROKE
    PISTON DIAMETER METRIC:
    50.45 MM
    PISTON MATERIAL:
    4032 ALUMINUM ALLOY
    RIDING STYLE:
    OFF-ROAD
    UNITS:
    KIT
    BORE SIZE METRIC:
    50.50 MM
    MODEL:
    PRO-LITE
    PISTON SIZE METRIC:
    +2.00 MM
    PRODUCT NAME:
    REBUILD KIT
    TYPE:
    TOP END
    DISPLACEMENT:
    84.9 CC
    STROKE LENGTH METRIC:
    45.80 MM
    $179.95
    Qty in Cart: 0
    Quantity:
    Price:
    $179.95
    Subtotal:
  • Wrench Rabbit Complete Engine Rebuild Kit for 1992-2002 Honda CR80R WR101-010

    Wrench Rabbit Complete Engine Rebuild Kit for 1992-2002 Honda CR80R WR101-010

    WRENCH RABBIT

    $487.95
    WRENCH RABBIT Engine Kit for Honda WR101-010 Revitalize your Honda engine with the WRENCH RABBIT Engine Kit, an all-in-one solution designed for a seamless and professional rebuild. This comprehensive kit includes high-quality components that ensure...
    09031057
    SKU:
    09031057
    Availability:
    Ships Same Business Day
    Weight:
    8.40 LBS
    MODEL:
    WRENCH RABBIT
    PRODUCT NAME:
    REBUILD KIT
    TYPE:
    ENGINE
    ENGINE TYPE:
    2-STROKE
    RIDING STYLE:
    OFF-ROAD
    UNITS:
    KIT
    FEATURES:
    STANDARD COMPRESSION PISTON
    $487.95
    Qty in Cart: 0
    Quantity:
    Price:
    $487.95
    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!