Dirt Bike Engine

Dirt Bike Engine

Dirt Bike Engine

Explore our selection for dirt bike parts for adding horsepower or reliability to a dirt bike's engine. We feature engine parts from Wiseco, Vertex, and more common engine part manufacturers. Get new pistons and gasket kits for re-freshening engines to withstand any conditions you put your bike through!

  • Product
  • Qty in Cart
  • Quantity
  • Price
  • Subtotal
  • MOOSE RACING Complete Motor Gasket Kit - 300SX/EXC 808326

    MOOSE RACING Complete Motor Gasket Kit - 300SX/EXC 808326

    MOOSE RACING

    $63.00
    MOOSE RACING Complete Motor Gasket Kit 300SX/EXC 808326Moose can now handle all your gasket and seal needs at a fraction of OEM cost., High-tech materials provide unmatched reliability and performance, Rebuild the engine and transmission with total...
    09340481
    SKU:
    09340481
    Availability:
    Ships Same Business Day
    Weight:
    0.20 LBS
    TYPE:
    ENGINE
    RIDING STYLE:
    OFF-ROAD
    TYPE:
    COMPLETE
    UNITS:
    KIT
    PRODUCT NAME:
    GASKET
    $63.00
    Qty in Cart: 0
    Quantity:
    Price:
    $63.00
    Subtotal:
  • MOOSE RACING Motor Gasket Kit with Seal - 300SX/EXC 811326

    MOOSE RACING Motor Gasket Kit with Seal - 300SX/EXC 811326

    MOOSE RACING

    $81.34
    MOOSE RACING Motor Gasket Kit with Seal 300SX/EXC 811326Moose can now handle all your gasket and seal needs at a fraction of OEM cost, Rebuild the engine and transmission with total confidence as each set is designed for durability and accurate fit, Oil...
    09340482
    SKU:
    09340482
    Availability:
    Ships Same Business Day
    Weight:
    0.17 LBS
    $81.34
    Qty in Cart: 0
    Quantity:
    Price:
    $81.34
    Subtotal:
  • MOOSE RACING Top End Gasket Kit - KDX/JR50 810416

    MOOSE RACING Top End Gasket Kit - KDX/JR50 810416

    MOOSE RACING

    $16.03
    MOOSE RACING Top End Gasket Kit KDX/JR50 810416Moose can now handle all your gasket and seal needs at a fraction of OEM cost, High-tech materials provide unmatched reliability and performance, Rebuild the engine and transmission with total confidence as...
    09340483
    SKU:
    09340483
    Availability:
    Ships Same Business Day
    Weight:
    0.05 LBS
    RIDING STYLE:
    OFF-ROAD
    PRODUCT NAME:
    GASKET
    TYPE:
    TOP END
    UNITS:
    KIT
    $16.03
    Qty in Cart: 0
    Quantity:
    Price:
    $16.03
    Subtotal:
  • MOOSE RACING Complete Motor Gasket Kit - YZ125 808641

    MOOSE RACING Complete Motor Gasket Kit - YZ125 808641

    MOOSE RACING

    $47.87
    MOOSE RACING Complete Motor Gasket Kit YZ125 808641Moose can now handle all your gasket and seal needs at a fraction of OEM cost., High-tech materials provide unmatched reliability and performance, Rebuild the engine and transmission with total...
    09340492
    SKU:
    09340492
    Availability:
    Ships Same Business Day
    Weight:
    0.12 LBS
    RIDING STYLE:
    OFF-ROAD
    TYPE:
    COMPLETE
    UNITS:
    KIT
    PRODUCT NAME:
    GASKET
    TYPE:
    ENGINE
    $47.87
    Qty in Cart: 0
    Quantity:
    Price:
    $47.87
    Subtotal:
  • MOOSE RACING Motor Gasket Kit with Seal - YZ125 811641

    MOOSE RACING Motor Gasket Kit with Seal - YZ125 811641

    MOOSE RACING

    $72.95
    MOOSE RACING Motor Gasket Kit with Seal YZ125 811641Moose can now handle all your gasket and seal needs at a fraction of OEM cost, Rebuild the engine and transmission with total confidence as each set is designed for durability and accurate fit, Oil...
    09340493
    SKU:
    09340493
    Availability:
    Ships Same Business Day
    Weight:
    0.20 LBS
    Qty in Cart: 0
    Quantity:
    Price:
    $72.95
    Subtotal:
  • MOOSE RACING Complete Motor Gasket Kit without Seals - YZ85 8110026

    MOOSE RACING Complete Motor Gasket Kit without Seals - YZ85 8110026

    MOOSE RACING

    $84.99
    MOOSE RACING Complete Motor Gasket Kit without Seals YZ85 8110026Moose can now handle all your gasket and seal needs at a fraction of OEM cost., High-tech materials provide unmatched reliability and performance, Rebuild the engine and transmission with...
    09346449
    SKU:
    09346449
    Availability:
    Ships Same Business Day
    Weight:
    0.10 LBS
    RIDING STYLE:
    OFF-ROAD
    TYPE:
    COMPLETE
    UNITS:
    KIT
    TYPE:
    ENGINE
    PRODUCT NAME:
    GASKET
    Qty in Cart: 0
    Quantity:
    Price:
    $84.99
    Subtotal:
  • MOOSE RACING Complete Motor Gasket Kit without Seals - KX450 8110027

    MOOSE RACING Complete Motor Gasket Kit without Seals - KX450 8110027

    MOOSE RACING

    $190.81
    MOOSE RACING Complete Motor Gasket Kit without Seals KX450 8110027Moose can now handle all your gasket and seal needs at a fraction of OEM cost., High-tech materials provide unmatched reliability and performance, Rebuild the engine and transmission with...
    09346450
    SKU:
    09346450
    Availability:
    Ships Same Business Day
    Weight:
    0.25 LBS
    TYPE:
    ENGINE
    RIDING STYLE:
    OFF-ROAD
    UNITS:
    KIT
    PRODUCT NAME:
    GASKET
    TYPE:
    COMPLETE
    $190.81
    Qty in Cart: 0
    Quantity:
    Price:
    $190.81
    Subtotal:
  • MOOSE RACING Complete Motor Gasket Kit - KX/RM65 808412

    MOOSE RACING Complete Motor Gasket Kit - KX/RM65 808412

    MOOSE RACING

    $39.04
    MOOSE RACING Complete Motor Gasket Kit KX/RM65 808412Moose can now handle all your gasket and seal needs at a fraction of OEM cost., High-tech materials provide unmatched reliability and performance, Rebuild the engine and transmission with total...
    M808412
    SKU:
    M808412
    Availability:
    Ships Same Business Day
    Weight:
    0.10 LBS
    RIDING STYLE:
    OFF-ROAD
    TYPE:
    COMPLETE
    TYPE:
    ENGINE
    PRODUCT NAME:
    GASKET
    UNITS:
    KIT
    $39.04
    Qty in Cart: 0
    Quantity:
    Price:
    $39.04
    Subtotal:
  • MOOSE RACING Top End Gasket Kit - CRF450X 810276

    MOOSE RACING Top End Gasket Kit - CRF450X 810276

    MOOSE RACING

    $89.62
    MOOSE RACING Top End Gasket Kit CRF450X 810276Moose can now handle all your gasket and seal needs at a fraction of OEM cost, High-tech materials provide unmatched reliability and performance, Rebuild the engine and transmission with total confidence as...
    09340968
    SKU:
    09340968
    Availability:
    Ships Same Business Day
    Weight:
    0.16 LBS
    RIDING STYLE:
    OFF-ROAD
    UNITS:
    KIT
    PRODUCT NAME:
    GASKET
    TYPE:
    TOP END
    $89.62
    Qty in Cart: 0
    Quantity:
    Price:
    $89.62
    Subtotal:
  • MOOSE RACING Complete Motor Gasket Kit - CRF450X 808276

    MOOSE RACING Complete Motor Gasket Kit - CRF450X 808276

    MOOSE RACING

    $172.74
    MOOSE RACING Complete Motor Gasket Kit CRF450X 808276Moose can now handle all your gasket and seal needs at a fraction of OEM cost., High-tech materials provide unmatched reliability and performance, Rebuild the engine and transmission with total...
    09340969
    SKU:
    09340969
    Availability:
    Ships Same Business Day
    Weight:
    0.30 LBS
    TYPE:
    COMPLETE
    TYPE:
    ENGINE
    PRODUCT NAME:
    GASKET
    RIDING STYLE:
    OFF-ROAD
    UNITS:
    KIT
    $172.74
    Qty in Cart: 0
    Quantity:
    Price:
    $172.74
    Subtotal:
  • MOOSE RACING Valve Shim - 9.48 x 1.65 - 5 pack MSE5PK948165

    MOOSE RACING Valve Shim - 9.48 x 1.65 - 5 pack MSE5PK948165

    MOOSE RACING

    $9.95
    MOOSE RACING Valve Shim 9.48 x 1.65 5 pack MSE5PK948165Complete valve shim kits make it easier to maintain your valve train, Forged from 4140 cold rolled steel, not sintered, Laser-etched size on each shim for identification, A great addition to any...
    09261937
    SKU:
    09261937
    Availability:
    Ships Same Business Day
    Weight:
    0.05 LBS
    PRODUCT NAME:
    SHIM
    RIDING STYLE:
    ADVENTURE TOURING / DUAL-SPORT
    RIDING STYLE:
    STREET
    RIDING STYLE:
    UTV
    RIDING STYLE:
    WATERCRAFT
    UNITS:
    5 PACK
    RIDING STYLE:
    ATV
    TYPE:
    VALVE
    VALVE SHIM THICKNESS METRIC:
    1.65 MM
    MATERIAL:
    ROLLED
    MATERIAL:
    STEEL
    OUTSIDE DIAMETER METRIC:
    9.48 MM
    RIDING STYLE:
    OFF-ROAD
    RIDING STYLE:
    SNOW
    $9.95
    Qty in Cart: 0
    Quantity:
    Price:
    $9.95
    Subtotal:
  • MOOSE RACING Valve Shim - 9.48 x 1.85 - 5 pack MSE5PK948185

    MOOSE RACING Valve Shim - 9.48 x 1.85 - 5 pack MSE5PK948185

    MOOSE RACING

    $9.95
    MOOSE RACING Valve Shim 9.48 x 1.85 5 pack MSE5PK948185Complete valve shim kits make it easier to maintain your valve train, Forged from 4140 cold rolled steel, not sintered, Laser-etched size on each shim for identification, A great addition to any...
    09261941
    SKU:
    09261941
    Availability:
    Ships Same Business Day
    Weight:
    0.05 LBS
    PRODUCT NAME:
    SHIM
    RIDING STYLE:
    UTV
    RIDING STYLE:
    WATERCRAFT
    RIDING STYLE:
    ATV
    TYPE:
    VALVE
    VALVE SHIM THICKNESS METRIC:
    1.85 MM
    RIDING STYLE:
    ADVENTURE TOURING / DUAL-SPORT
    RIDING STYLE:
    STREET
    MATERIAL:
    ROLLED
    MATERIAL:
    STEEL
    OUTSIDE DIAMETER METRIC:
    9.48 MM
    RIDING STYLE:
    OFF-ROAD
    RIDING STYLE:
    SNOW
    UNITS:
    5 PACK
    $9.95
    Qty in Cart: 0
    Quantity:
    Price:
    $9.95
    Subtotal:
  • MOOSE RACING Valve Shim - 9.48 x 2.00 - 5 pack MSE5PK948200

    MOOSE RACING Valve Shim - 9.48 x 2.00 - 5 pack MSE5PK948200

    MOOSE RACING

    $9.95
    MOOSE RACING Valve Shim 9.48 x 2.00 5 pack MSE5PK948200Complete valve shim kits make it easier to maintain your valve train, Forged from 4140 cold rolled steel, not sintered, Laser-etched size on each shim for identification, A great addition to any...
    09261944
    SKU:
    09261944
    Availability:
    Ships Same Business Day
    Weight:
    0.02 LBS
    OUTSIDE DIAMETER METRIC:
    9.48 MM
    PRODUCT NAME:
    SHIM
    RIDING STYLE:
    ADVENTURE TOURING / DUAL-SPORT
    RIDING STYLE:
    SNOW
    RIDING STYLE:
    STREET
    UNITS:
    5 PACK
    VALVE SHIM THICKNESS METRIC:
    2.00 MM
    MATERIAL:
    ROLLED
    MATERIAL:
    STEEL
    RIDING STYLE:
    ATV
    RIDING STYLE:
    OFF-ROAD
    RIDING STYLE:
    UTV
    RIDING STYLE:
    WATERCRAFT
    TYPE:
    VALVE
    $9.95
    Qty in Cart: 0
    Quantity:
    Price:
    $9.95
    Subtotal:
  • MOOSE RACING Valve Shim - 9.48 x 2.05 - 5 pack MSE5PK948205

    MOOSE RACING Valve Shim - 9.48 x 2.05 - 5 pack MSE5PK948205

    MOOSE RACING

    $9.95
    MOOSE RACING Valve Shim 9.48 x 2.05 5 pack MSE5PK948205Complete valve shim kits make it easier to maintain your valve train, Forged from 4140 cold rolled steel, not sintered, Laser-etched size on each shim for identification, A great addition to any...
    09261945
    SKU:
    09261945
    Availability:
    Ships Same Business Day
    Weight:
    0.05 LBS
    OUTSIDE DIAMETER METRIC:
    9.48 MM
    RIDING STYLE:
    ADVENTURE TOURING / DUAL-SPORT
    RIDING STYLE:
    SNOW
    RIDING STYLE:
    STREET
    UNITS:
    5 PACK
    MATERIAL:
    ROLLED
    MATERIAL:
    STEEL
    RIDING STYLE:
    OFF-ROAD
    VALVE SHIM THICKNESS METRIC:
    2.05 MM
    PRODUCT NAME:
    SHIM
    RIDING STYLE:
    UTV
    RIDING STYLE:
    WATERCRAFT
    TYPE:
    VALVE
    RIDING STYLE:
    ATV
    $9.95
    Qty in Cart: 0
    Quantity:
    Price:
    $9.95
    Subtotal:
  • MOOSE RACING Valve Shim - 9.48 x 2.20 - 5 pack MSE5PK948220

    MOOSE RACING Valve Shim - 9.48 x 2.20 - 5 pack MSE5PK948220

    MOOSE RACING

    $9.95
    MOOSE RACING Valve Shim 9.48 x 2.20 5 pack MSE5PK948220Complete valve shim kits make it easier to maintain your valve train, Forged from 4140 cold rolled steel, not sintered, Laser-etched size on each shim for identification, A great addition to any...
    09261948
    SKU:
    09261948
    Availability:
    Ships Same Business Day
    Weight:
    0.05 LBS
    RIDING STYLE:
    ATV
    TYPE:
    VALVE
    RIDING STYLE:
    OFF-ROAD
    RIDING STYLE:
    UTV
    RIDING STYLE:
    WATERCRAFT
    VALVE SHIM THICKNESS METRIC:
    2.20 MM
    RIDING STYLE:
    ADVENTURE TOURING / DUAL-SPORT
    RIDING STYLE:
    STREET
    MATERIAL:
    ROLLED
    MATERIAL:
    STEEL
    OUTSIDE DIAMETER METRIC:
    9.48 MM
    PRODUCT NAME:
    SHIM
    RIDING STYLE:
    SNOW
    UNITS:
    5 PACK
    $9.95
    Qty in Cart: 0
    Quantity:
    Price:
    $9.95
    Subtotal:
  • MOOSE RACING Valve Shim - 9.48 x 2.50 - 5 pack MSE5PK948250

    MOOSE RACING Valve Shim - 9.48 x 2.50 - 5 pack MSE5PK948250

    MOOSE RACING

    $9.95
    MOOSE RACING Valve Shim 9.48 x 2.50 5 pack MSE5PK948250Complete valve shim kits make it easier to maintain your valve train, Forged from 4140 cold rolled steel, not sintered, Laser-etched size on each shim for identification, A great addition to any...
    09261954
    SKU:
    09261954
    Availability:
    Ships Same Business Day
    Weight:
    0.05 LBS
    MATERIAL:
    STEEL
    RIDING STYLE:
    OFF-ROAD
    RIDING STYLE:
    UTV
    OUTSIDE DIAMETER METRIC:
    9.48 MM
    VALVE SHIM THICKNESS METRIC:
    2.50 MM
    MATERIAL:
    ROLLED
    PRODUCT NAME:
    SHIM
    RIDING STYLE:
    SNOW
    RIDING STYLE:
    WATERCRAFT
    TYPE:
    VALVE
    UNITS:
    5 PACK
    RIDING STYLE:
    ADVENTURE TOURING / DUAL-SPORT
    RIDING STYLE:
    ATV
    RIDING STYLE:
    STREET
    $9.95
    Qty in Cart: 0
    Quantity:
    Price:
    $9.95
    Subtotal:
  • MOOSE RACING Valve Shim - 9.48 x 2.70 - 5 pack MSE5PK948270

    MOOSE RACING Valve Shim - 9.48 x 2.70 - 5 pack MSE5PK948270

    MOOSE RACING

    $9.95
    MOOSE RACING Valve Shim 9.48 x 2.70 5 pack MSE5PK948270Complete valve shim kits make it easier to maintain your valve train, Forged from 4140 cold rolled steel, not sintered, Laser-etched size on each shim for identification, A great addition to any...
    09261958
    SKU:
    09261958
    Availability:
    Ships Same Business Day
    Weight:
    0.02 LBS
    RIDING STYLE:
    ATV
    TYPE:
    VALVE
    VALVE SHIM THICKNESS METRIC:
    2.70 MM
    PRODUCT NAME:
    SHIM
    RIDING STYLE:
    ADVENTURE TOURING / DUAL-SPORT
    RIDING STYLE:
    SNOW
    RIDING STYLE:
    STREET
    RIDING STYLE:
    UTV
    RIDING STYLE:
    WATERCRAFT
    UNITS:
    5 PACK
    MATERIAL:
    ROLLED
    MATERIAL:
    STEEL
    OUTSIDE DIAMETER METRIC:
    9.48 MM
    RIDING STYLE:
    OFF-ROAD
    $9.95
    Qty in Cart: 0
    Quantity:
    Price:
    $9.95
    Subtotal:
  • MOOSE RACING Valve Shim - 9.48 x 2.75 - 5 pack MSE5PK948275

    MOOSE RACING Valve Shim - 9.48 x 2.75 - 5 pack MSE5PK948275

    MOOSE RACING

    $9.95
    MOOSE RACING Valve Shim 9.48 x 2.75 5 pack MSE5PK948275Complete valve shim kits make it easier to maintain your valve train, Forged from 4140 cold rolled steel, not sintered, Laser-etched size on each shim for identification, A great addition to any...
    09261959
    SKU:
    09261959
    Availability:
    Ships Same Business Day
    Weight:
    0.02 LBS
    RIDING STYLE:
    ATV
    TYPE:
    VALVE
    PRODUCT NAME:
    SHIM
    RIDING STYLE:
    UTV
    RIDING STYLE:
    WATERCRAFT
    VALVE SHIM THICKNESS METRIC:
    2.75 MM
    MATERIAL:
    ROLLED
    MATERIAL:
    STEEL
    OUTSIDE DIAMETER METRIC:
    9.48 MM
    RIDING STYLE:
    OFF-ROAD
    RIDING STYLE:
    SNOW
    UNITS:
    5 PACK
    RIDING STYLE:
    ADVENTURE TOURING / DUAL-SPORT
    RIDING STYLE:
    STREET
    $9.95
    Qty in Cart: 0
    Quantity:
    Price:
    $9.95
    Subtotal:
  • MOOSE RACING Valve Shim - 9.48 x 2.80 - 5 pack MSE5PK948280

    MOOSE RACING Valve Shim - 9.48 x 2.80 - 5 pack MSE5PK948280

    MOOSE RACING

    $9.95
    MOOSE RACING Valve Shim 9.48 x 2.80 5 pack MSE5PK948280Complete valve shim kits make it easier to maintain your valve train, Forged from 4140 cold rolled steel, not sintered, Laser-etched size on each shim for identification, A great addition to any...
    09261960
    SKU:
    09261960
    Availability:
    Ships Same Business Day
    Weight:
    0.02 LBS
    OUTSIDE DIAMETER METRIC:
    9.48 MM
    RIDING STYLE:
    ATV
    TYPE:
    VALVE
    RIDING STYLE:
    OFF-ROAD
    RIDING STYLE:
    UTV
    RIDING STYLE:
    WATERCRAFT
    VALVE SHIM THICKNESS METRIC:
    2.80 MM
    MATERIAL:
    ROLLED
    MATERIAL:
    STEEL
    PRODUCT NAME:
    SHIM
    RIDING STYLE:
    SNOW
    UNITS:
    5 PACK
    RIDING STYLE:
    ADVENTURE TOURING / DUAL-SPORT
    RIDING STYLE:
    STREET
    $9.95
    Qty in Cart: 0
    Quantity:
    Price:
    $9.95
    Subtotal:
  • MOOSE RACING Complete Gasket Set - Suzuki 808590

    MOOSE RACING Complete Gasket Set - Suzuki 808590

    MOOSE RACING

    $91.95
    MOOSE RACING Complete Gasket Set Suzuki 808590MOOSE RACING Complete Gasket Set - Suzuki
    09346949
    SKU:
    09346949
    Availability:
    Ships Same Business Day
    Weight:
    0.01 LBS
    PRODUCT NAME:
    GASKET SET
    RIDING STYLE:
    OFF-ROAD
    TYPE:
    COMPLETE
    UNITS:
    SET
    $91.95
    Qty in Cart: 0
    Quantity:
    Price:
    $91.95
    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!