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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.

  • Product
  • Qty in Cart
  • Quantity
  • Price
  • Subtotal
  • REKLUSE Clutch Cover - KX450F RMS-0404047

    REKLUSE Clutch Cover - KX450F RMS-0404047

    REKLUSE

    $189.00
    REKLUSE Clutch Cover KX450F RMS-0404047Specifically engineered to provide unparalleled durability and performance in a single, stylish component, Ready to ride whenever you are, standing up against rocks, logs, boots and whatever else you may encounter...
    09401999
    SKU:
    09401999
    Availability:
    Ships Same Business Day
    Weight:
    1.00 LBS
    COLOR/FINISH:
    BLACK
    RIDING STYLE:
    OFF-ROAD
    TYPE:
    CLUTCH
    PRODUCT NAME:
    COVER
    COLOR/FINISH:
    ANODIZED
    MATERIAL:
    BILLET ALUMINUM
    UNITS:
    EACH
    $189.00
    Qty in Cart: 0
    Quantity:
    Price:
    $189.00
    Subtotal:
  • VERTEX Piston Kit - High Compression 24112B

    VERTEX Piston Kit - High Compression 24112B

    VERTEX

    $303.95
    VERTEX Piston Kit High Compression 24112BAll pistons are heat-treated with a T-5 hardening and tempering cycle, All piston skirts are coated with a high-tech Molybdenum Disulphite coating for faster break-in time and increased piston life
    09104114
    SKU:
    09104114
    Availability:
    Ships Same Business Day
    Weight:
    1.00 LBS
    DISPLACEMENT:
    450 CC
    RIDING STYLE:
    STREET
    PISTON DIAMETER METRIC:
    94.96 MM
    PISTON MATERIAL:
    FORGED 2618 ALUMINUM
    PRODUCT NAME:
    PISTON KIT
    COMPRESSION RATIO IMPERIAL:
    13.6:1
    CYLINDER DIAMETER METRIC:
    95.00 MM
    RIDING STYLE:
    OFF-ROAD
    STYLE:
    FORGED HIGH COMPRESSION
    UNITS:
    KIT
    ENGINE TYPE:
    4-STROKE
    SKIRT COATING:
    MOLYBDENUM DISULPHITE
    $303.95
    Qty in Cart: 0
    Quantity:
    Price:
    $303.95
    Subtotal:
  • VERTEX Piston Kit - High Compression 24116A

    VERTEX Piston Kit - High Compression 24116A

    VERTEX

    $296.95
    VERTEX Piston Kit High Compression 24116AAll pistons are heat-treated with a T-5 hardening and tempering cycle, All piston skirts are coated with a high-tech Molybdenum Disulphite coating for faster break-in time and increased piston life
    09104117
    SKU:
    09104117
    Availability:
    Ships Same Business Day
    Weight:
    0.60 LBS
    RIDING STYLE:
    STREET
    COMPRESSION RATIO IMPERIAL:
    15.1:1
    RIDING STYLE:
    OFF-ROAD
    STYLE:
    FORGED HIGH COMPRESSION
    UNITS:
    KIT
    CYLINDER DIAMETER METRIC:
    88.00 MM
    ENGINE TYPE:
    4-STROKE
    PISTON DIAMETER METRIC:
    87.96 MM
    PRODUCT NAME:
    PISTON KIT
    DISPLACEMENT:
    350 CC
    PISTON MATERIAL:
    FORGED 2618 ALUMINUM
    SKIRT COATING:
    MOLYBDENUM DISULPHITE
    $296.95
    Qty in Cart: 0
    Quantity:
    Price:
    $296.95
    Subtotal:
  • VERTEX Piston Kit - High Compression 24116B

    VERTEX Piston Kit - High Compression 24116B

    VERTEX

    $296.95
    VERTEX Piston Kit High Compression 24116BAll pistons are heat-treated with a T-5 hardening and tempering cycle, All piston skirts are coated with a high-tech Molybdenum Disulphite coating for faster break-in time and increased piston life
    09104118
    SKU:
    09104118
    Availability:
    Ships Same Business Day
    Weight:
    0.60 LBS
    RIDING STYLE:
    OFF-ROAD
    STYLE:
    FORGED HIGH COMPRESSION
    UNITS:
    KIT
    CYLINDER DIAMETER METRIC:
    88.00 MM
    ENGINE TYPE:
    4-STROKE
    PISTON DIAMETER METRIC:
    87.97 MM
    RIDING STYLE:
    STREET
    SKIRT COATING:
    MOLYBDENUM DISULPHITE
    COMPRESSION RATIO IMPERIAL:
    15.1:1
    DISPLACEMENT:
    350 CC
    PISTON MATERIAL:
    FORGED 2618 ALUMINUM
    PRODUCT NAME:
    PISTON KIT
    $296.95
    Qty in Cart: 0
    Quantity:
    Price:
    $296.95
    Subtotal:
  • VERTEX Piston Kit - High Compression 24113A

    VERTEX Piston Kit - High Compression 24113A

    VERTEX

    $340.95
    VERTEX Piston Kit High Compression 24113AAll pistons are heat-treated with a T-5 hardening and tempering cycle, All piston skirts are coated with a high-tech Molybdenum Disulphite coating for faster break-in time and increased piston life
    09104119
    SKU:
    09104119
    Availability:
    Ships Same Business Day
    Weight:
    0.90 LBS
    RIDING STYLE:
    OFF-ROAD
    STYLE:
    FORGED HIGH COMPRESSION
    UNITS:
    KIT
    DISPLACEMENT:
    450 CC
    COMPRESSION RATIO IMPERIAL:
    13.3:1
    ENGINE TYPE:
    4-STROKE
    PISTON DIAMETER METRIC:
    94.95 MM
    RIDING STYLE:
    STREET
    SKIRT COATING:
    MOLYBDENUM DISULPHITE
    CYLINDER DIAMETER METRIC:
    95.00 MM
    PISTON MATERIAL:
    FORGED 2618 ALUMINUM
    PRODUCT NAME:
    PISTON KIT
    $340.95
    Qty in Cart: 0
    Quantity:
    Price:
    $340.95
    Subtotal:
  • VERTEX Piston Kit - High Compression 24113B

    VERTEX Piston Kit - High Compression 24113B

    VERTEX

    $340.95
    VERTEX Piston Kit High Compression 24113BAll pistons are heat-treated with a T-5 hardening and tempering cycle, All piston skirts are coated with a high-tech Molybdenum Disulphite coating for faster break-in time and increased piston life
    09104120
    SKU:
    09104120
    Availability:
    Ships Same Business Day
    Weight:
    0.60 LBS
    RIDING STYLE:
    OFF-ROAD
    STYLE:
    FORGED HIGH COMPRESSION
    UNITS:
    KIT
    DISPLACEMENT:
    450 CC
    COMPRESSION RATIO IMPERIAL:
    13.3:1
    ENGINE TYPE:
    4-STROKE
    RIDING STYLE:
    STREET
    SKIRT COATING:
    MOLYBDENUM DISULPHITE
    CYLINDER DIAMETER METRIC:
    95.00 MM
    PISTON DIAMETER METRIC:
    94.96 MM
    PISTON MATERIAL:
    FORGED 2618 ALUMINUM
    PRODUCT NAME:
    PISTON KIT
    $340.95
    Qty in Cart: 0
    Quantity:
    Price:
    $340.95
    Subtotal:
  • On Sale
    VERTEX Piston Kit - High Compression 24121C

    VERTEX Piston Kit - High Compression 24121C

    VERTEX

    MSRP: $265.95
    Now: $170.00
    Was: $265.95
    VERTEX Piston Kit High Compression 24121CAll pistons are heat-treated with a T-5 hardening and tempering cycle, All piston skirts are coated with a high-tech Molybdenum Disulphite coating for faster break-in time and increased piston life
    09104130
    SKU:
    09104130
    Availability:
    Ships Same Business Day
    Weight:
    0.55 LBS
    PISTON DIAMETER METRIC:
    76.78 MM
    PISTON MATERIAL:
    FORGED 2618 ALUMINUM
    CYLINDER DIAMETER METRIC:
    76.80 MM
    RIDING STYLE:
    OFF-ROAD
    DISPLACEMENT:
    250 CC
    ENGINE TYPE:
    4-STROKE
    PRODUCT NAME:
    PISTON KIT
    SKIRT COATING:
    MOLYBDENUM DISULPHITE
    COMPRESSION RATIO IMPERIAL:
    14.0:1
    STYLE:
    FORGED HIGH COMPRESSION
    UNITS:
    KIT
    MSRP: $265.95
    Now: $170.00
    Was: $265.95
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $265.95
    Now: $170.00
    Was: $265.95
    Subtotal:
  • VERTEX Piston Kit 24105B

    VERTEX Piston Kit 24105B

    VERTEX

    $71.95
    VERTEX Piston Kit 24105BAll pistons are heat-treated with a T-5 hardening and tempering cycle, All piston skirts are coated with a high-tech Molybdenum Disulphite coating for faster break-in time and increased piston life
    09104135
    SKU:
    09104135
    Availability:
    Ships Same Business Day
    Weight:
    0.15 LBS
    CYLINDER DIAMETER METRIC:
    39.00 MM
    PRODUCT NAME:
    PISTON KIT
    COMPRESSION RATIO IMPERIAL:
    STANDARD
    PISTON DIAMETER METRIC:
    38.95 MM
    PISTON MATERIAL:
    ALUMINUM ALLOY
    PISTON MATERIAL:
    CAST
    SKIRT COATING:
    MOLYBDENUM DISULPHITE
    STYLE:
    CAST REPLICA
    DISPLACEMENT:
    50 CC
    ENGINE TYPE:
    2-STROKE
    RIDING STYLE:
    OFF-ROAD
    UNITS:
    KIT
    $71.95
    Qty in Cart: 0
    Quantity:
    Price:
    $71.95
    Subtotal:
  • VERTEX Piston Kit 24105C

    VERTEX Piston Kit 24105C

    VERTEX

    $70.95
    VERTEX Piston Kit 24105CAll pistons are heat-treated with a T-5 hardening and tempering cycle, All piston skirts are coated with a high-tech Molybdenum Disulphite coating for faster break-in time and increased piston life
    09104136
    SKU:
    09104136
    Availability:
    Ships Same Business Day
    Weight:
    0.15 LBS
    PRODUCT NAME:
    PISTON KIT
    STYLE:
    CAST REPLICA
    CYLINDER DIAMETER METRIC:
    39.00 MM
    PISTON MATERIAL:
    ALUMINUM ALLOY
    SKIRT COATING:
    MOLYBDENUM DISULPHITE
    COMPRESSION RATIO IMPERIAL:
    STANDARD
    DISPLACEMENT:
    50 CC
    ENGINE TYPE:
    2-STROKE
    PISTON DIAMETER METRIC:
    38.96 MM
    PISTON MATERIAL:
    CAST
    RIDING STYLE:
    OFF-ROAD
    UNITS:
    KIT
    $70.95
    Qty in Cart: 0
    Quantity:
    Price:
    $70.95
    Subtotal:
  • VERTEX Piston Kit 24107AB

    VERTEX Piston Kit 24107AB

    VERTEX

    $70.95
    VERTEX Piston Kit 24107ABAll pistons are heat-treated with a T-5 hardening and tempering cycle, All piston skirts are coated with a high-tech Molybdenum Disulphite coating for faster break-in time and increased piston life
    09104137
    SKU:
    09104137
    Availability:
    Ships Same Business Day
    Weight:
    0.25 LBS
    PRODUCT NAME:
    PISTON KIT
    PISTON MATERIAL:
    ALUMINUM ALLOY
    SKIRT COATING:
    MOLYBDENUM DISULPHITE
    DISPLACEMENT:
    65 CC
    PISTON DIAMETER METRIC:
    44.45 MM
    STYLE:
    CAST REPLICA
    COMPRESSION RATIO IMPERIAL:
    STANDARD
    CYLINDER DIAMETER METRIC:
    44.50 MM
    ENGINE TYPE:
    2-STROKE
    PISTON MATERIAL:
    CAST
    RIDING STYLE:
    OFF-ROAD
    UNITS:
    KIT
    Qty in Cart: 0
    Quantity:
    Price:
    $70.95
    Subtotal:
  • On Sale
    VERTEX Piston Kit - High Compression 23960B

    VERTEX Piston Kit - High Compression 23960B

    VERTEX

    MSRP: $301.95
    Now: $197.00
    Was: $301.95
    VERTEX Piston Kit High Compression 23960BAll pistons are heat-treated with a T-5 hardening and tempering cycle, All piston skirts are coated with a high-tech Molybdenum Disulphite coating for faster break-in time and increased piston life
    09103403
    SKU:
    09103403
    Availability:
    Ships Same Business Day
    Weight:
    0.91 LBS
    ENGINE TYPE:
    4-STROKE
    PISTON DIAMETER METRIC:
    96.95 MM
    PISTON MATERIAL:
    FORGED 2618 ALUMINUM
    SKIRT COATING:
    MOLYBDENUM DISULPHITE
    RIDING STYLE:
    OFF-ROAD
    CYLINDER DIAMETER METRIC:
    97.00 MM
    COMPRESSION RATIO IMPERIAL:
    13.7:1
    DISPLACEMENT:
    450 CC
    PRODUCT NAME:
    PISTON KIT
    STYLE:
    FORGED HIGH COMPRESSION
    UNITS:
    KIT
    MSRP: $301.95
    Now: $197.00
    Was: $301.95
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $301.95
    Now: $197.00
    Was: $301.95
    Subtotal:
  • VERTEX Piston Kit 23961A

    VERTEX Piston Kit 23961A

    VERTEX

    $218.95
    VERTEX Piston Kit 23961AAll pistons are heat-treated with a T-5 hardening and tempering cycle, All piston skirts are coated with a high-tech Molybdenum Disulphite coating for faster break-in time and increased piston life
    09103405
    SKU:
    09103405
    Availability:
    Ships Same Business Day
    Weight:
    0.56 LBS
    $218.95
    Qty in Cart: 0
    Quantity:
    Price:
    $218.95
    Subtotal:
  • On Sale
    VERTEX Piston Kit - High Compression 23963A

    VERTEX Piston Kit - High Compression 23963A

    VERTEX

    MSRP: $335.95
    Now: $219.00
    Was: $335.95
    VERTEX Piston Kit High Compression 23963AAll pistons are heat-treated with a T-5 hardening and tempering cycle, All piston skirts are coated with a high-tech Molybdenum Disulphite coating for faster break-in time and increased piston life
    09103411
    SKU:
    09103411
    Availability:
    Ships Same Business Day
    Weight:
    0.54 LBS
    PISTON DIAMETER METRIC:
    76.76 MM
    RIDING STYLE:
    OFF-ROAD
    STYLE:
    FORGED HIGH COMPRESSION
    UNITS:
    KIT
    COMPRESSION RATIO IMPERIAL:
    14.6:1
    DISPLACEMENT:
    250 CC
    ENGINE TYPE:
    4-STROKE
    PRODUCT NAME:
    PISTON KIT
    CYLINDER DIAMETER METRIC:
    76.80 MM
    PISTON MATERIAL:
    FORGED 2618 ALUMINUM
    SKIRT COATING:
    MOLYBDENUM DISULPHITE
    MSRP: $335.95
    Now: $219.00
    Was: $335.95
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $335.95
    Now: $219.00
    Was: $335.95
    Subtotal:
  • On Sale
    VERTEX Piston Kit - High Compression 23963B

    VERTEX Piston Kit - High Compression 23963B

    VERTEX

    MSRP: $335.95
    Now: $219.00
    Was: $335.95
    VERTEX Piston Kit High Compression 23963BAll pistons are heat-treated with a T-5 hardening and tempering cycle, All piston skirts are coated with a high-tech Molybdenum Disulphite coating for faster break-in time and increased piston life
    09103412
    SKU:
    09103412
    Availability:
    Ships Same Business Day
    Weight:
    0.53 LBS
    DISPLACEMENT:
    250 CC
    PRODUCT NAME:
    PISTON KIT
    STYLE:
    FORGED HIGH COMPRESSION
    UNITS:
    KIT
    RIDING STYLE:
    OFF-ROAD
    COMPRESSION RATIO IMPERIAL:
    14.6:1
    CYLINDER DIAMETER METRIC:
    76.80 MM
    ENGINE TYPE:
    4-STROKE
    PISTON DIAMETER METRIC:
    76.77 MM
    PISTON MATERIAL:
    FORGED 2618 ALUMINUM
    SKIRT COATING:
    MOLYBDENUM DISULPHITE
    MSRP: $335.95
    Now: $219.00
    Was: $335.95
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $335.95
    Now: $219.00
    Was: $335.95
    Subtotal:
  • VERTEX Piston Kit 24020A

    VERTEX Piston Kit 24020A

    VERTEX

    $237.95
    VERTEX Piston Kit 24020AAll pistons are heat-treated with a T-5 hardening and tempering cycle, All piston skirts are coated with a high-tech Molybdenum Disulphite coating for faster break-in time and increased piston life
    09103684
    SKU:
    09103684
    Availability:
    Ships Same Business Day
    Weight:
    0.60 LBS
    $237.95
    Qty in Cart: 0
    Quantity:
    Price:
    $237.95
    Subtotal:
  • VERTEX Piston Kit 24020B

    VERTEX Piston Kit 24020B

    VERTEX

    $237.95
    VERTEX Piston Kit 24020BAll pistons are heat-treated with a T-5 hardening and tempering cycle, All piston skirts are coated with a high-tech Molybdenum Disulphite coating for faster break-in time and increased piston life
    09103685
    SKU:
    09103685
    Availability:
    Ships Same Business Day
    Weight:
    0.60 LBS
    $237.95
    Qty in Cart: 0
    Quantity:
    Price:
    $237.95
    Subtotal:
  • VERTEX Piston Kit 22224B

    VERTEX Piston Kit 22224B

    VERTEX

    $148.95
    VERTEX Piston Kit 22224BAll pistons are heat treated with a T-5 hardening and tempering cycle, All piston skirts are coated with a high-tech Molybdenum Disulphite coating for faster break-in time and increased piston life, Cast piston kits are gravity...
    09102116
    SKU:
    09102116
    Availability:
    Ships Same Business Day
    Weight:
    0.47 LBS
    ENGINE TYPE:
    2-STROKE
    PISTON MATERIAL:
    ALUMINUM ALLOY
    RIDING STYLE:
    OFF-ROAD
    SKIRT COATING:
    MOLYBDENUM DISULPHITE
    STYLE:
    CAST REPLICA
    DISPLACEMENT:
    125 CC
    COMPRESSION RATIO IMPERIAL:
    STANDARD
    CYLINDER DIAMETER METRIC:
    54.00 MM
    PISTON DIAMETER METRIC:
    53.94 MM
    PISTON MATERIAL:
    CAST
    PRODUCT NAME:
    PISTON KIT
    UNITS:
    KIT
    $148.95
    Qty in Cart: 0
    Quantity:
    Price:
    $148.95
    Subtotal:
  • VERTEX Piston Kit 22896B

    VERTEX Piston Kit 22896B

    VERTEX

    $280.95
    VERTEX Piston Kit 22896BAll pistons are heat treated with a T-5 hardening and tempering cycle, All piston skirts are coated with a high-tech Molybdenum Disulphite coating for faster break-in time and increased piston life, Cast piston kits are gravity...
    09102120
    SKU:
    09102120
    Availability:
    Ships Same Business Day
    Weight:
    1.09 LBS
    DISPLACEMENT:
    450 CC
    PISTON DIAMETER METRIC:
    94.94 MM
    STYLE:
    FORGED HIGH COMPRESSION
    UNITS:
    KIT
    PRODUCT NAME:
    PISTON KIT
    RIDING STYLE:
    OFF-ROAD
    COMPRESSION RATIO IMPERIAL:
    13.5:1
    CYLINDER DIAMETER METRIC:
    95.00 MM
    ENGINE TYPE:
    4-STROKE
    PISTON MATERIAL:
    FORGED 2618 ALUMINUM
    SKIRT COATING:
    MOLYBDENUM DISULPHITE
    $280.95
    Qty in Cart: 0
    Quantity:
    Price:
    $280.95
    Subtotal:
  • VERTEX Piston Kit 22964A

    VERTEX Piston Kit 22964A

    VERTEX

    $233.95
    VERTEX Piston Kit 22964AAll pistons are heat treated with a T-5 hardening and tempering cycle, All piston skirts are coated with a high-tech Molybdenum Disulphite coating for faster break-in time and increased piston life, Cast piston kits are gravity...
    09102121
    SKU:
    09102121
    Availability:
    Ships Same Business Day
    Weight:
    0.90 LBS
    UNITS:
    KIT
    RIDING STYLE:
    OFF-ROAD
    BORE - OVERSIZE METRIC:
    +2.00 MM
    COMPRESSION RATIO IMPERIAL:
    12.3:1
    CYLINDER DIAMETER METRIC:
    97.00 MM
    DISPLACEMENT:
    470 CC
    PISTON DIAMETER METRIC:
    96.96 MM
    PRODUCT NAME:
    PISTON KIT
    BORE - OVERSIZE:
    +2,00 MM
    ENGINE TYPE:
    4-STROKE
    PISTON MATERIAL:
    FORGED 2618 ALUMINUM
    SKIRT COATING:
    MOLYBDENUM DISULPHITE
    STYLE:
    FORGED BIG BORE
    Qty in Cart: 0
    Quantity:
    Price:
    $233.95
    Subtotal:
  • VERTEX Piston Kit 23614A

    VERTEX Piston Kit 23614A

    VERTEX

    $182.95
    VERTEX Piston Kit 23614AAll pistons are heat treated with a T-5 hardening and tempering cycle, All piston skirts are coated with a high-tech Molybdenum Disulphite coating for faster break-in time and increased piston life, Cast piston kits are gravity...
    09104645
    SKU:
    09104645
    Availability:
    Ships Same Business Day
    Weight:
    0.30 LBS
    DISPLACEMENT:
    99 CC
    PISTON DIAMETER METRIC:
    52.44 MM
    PRODUCT NAME:
    PISTON KIT
    PISTON MATERIAL:
    ALUMINUM ALLOY
    SKIRT COATING:
    MOLYBDENUM DISULPHITE
    CYLINDER DIAMETER METRIC:
    52.50 MM
    COMPRESSION RATIO IMPERIAL:
    STANDARD
    ENGINE TYPE:
    2-STROKE
    PISTON MATERIAL:
    CAST
    RIDING STYLE:
    OFF-ROAD
    STYLE:
    CAST REPLICA
    UNITS:
    KIT
    $182.95
    Qty in Cart: 0
    Quantity:
    Price:
    $182.95
    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!