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!

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  • On Sale
    CYLINDER WORKS Cylinder Kit - Standard Bore 30012-K02

    CYLINDER WORKS Cylinder Kit - Standard Bore 30012-K02

    CYLINDER WORKS

    MSRP: $577.95
    Now: $530.96
    Was: $589.95
    CYLINDER WORKS Cylinder Kit Standard Bore 30012-K02Ready-to-install, direct bolt-on cylinders require no re-plating and look virtually identical to the OEM cylinders, Cylinder kits include matched Vertex pistons to ensure longevity, performance and...
    9310727
    SKU:
    9310727
    Availability:
    Ships Same Business Day
    Weight:
    3.25 LBS
    BORE SIZE METRIC:
    77.00 MM
    STYLE:
    STANDARD
    ENGINE TYPE:
    4-CYCLE
    CYLINDER DIAMETER METRIC:
    77.00 MM
    RIDING STYLE:
    OFF-ROAD
    COMPRESSION RATIO IMPERIAL:
    13.4:1
    CYLINDER BORE COATING:
    NICKEL-SILICON CARBIDE
    CYLINDER DIAMETER:
    77,00 MM
    PRODUCT NAME:
    CYLINDER KIT
    UNITS:
    KIT
    MSRP: $577.95
    Now: $530.96
    Was: $589.95
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $577.95
    Now: $530.96
    Was: $589.95
    Subtotal:
  • On Sale
    CYLINDER WORKS Cylinder Kit 30012-K02HC

    CYLINDER WORKS Cylinder Kit 30012-K02HC

    CYLINDER WORKS

    MSRP: $633.95
    Now: $582.26
    Was: $646.95
    CYLINDER WORKS Cylinder Kit 30012-K02HCReady-to-install, direct bolt-on cylinders require no re-plating and look virtually identical to the OEM cylinders, Cylinder kits include matched Vertex pistons to ensure longevity, performance and reduced engine...
    9310729
    SKU:
    9310729
    Availability:
    Ships Same Business Day
    Weight:
    3.25 LBS
    CYLINDER DIAMETER:
    77,00 MM
    ENGINE TYPE:
    4-CYCLE
    PRODUCT NAME:
    CYLINDER KIT
    CYLINDER DIAMETER METRIC:
    77.00 MM
    STYLE:
    STANDARD
    RIDING STYLE:
    OFF-ROAD
    UNITS:
    KIT
    BORE SIZE METRIC:
    77.00 MM
    COMPRESSION RATIO IMPERIAL:
    14.3:1
    MSRP: $633.95
    Now: $582.26
    Was: $646.95
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $633.95
    Now: $582.26
    Was: $646.95
    Subtotal:
  • On Sale
    CYLINDER WORKS Big Bore Gasket Kit 12001-G01

    CYLINDER WORKS Big Bore Gasket Kit 12001-G01

    CYLINDER WORKS

    MSRP: $85.95
    Now: $77.36
    Was: $85.95
    Ready-to-install, direct bolt-on cylinders require no re-plating and look virtually identical to the OEM cylinders, Cylinder kits include matched Vertex pistons to ensure longevity, performance and reduced engine noise, Nickel Silicon Carbide plated for...
    9341698
    SKU:
    9341698
    Weight:
    2.00 LBS
    MSRP: $85.95
    Now: $77.36
    Was: $85.95
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $85.95
    Now: $77.36
    Was: $85.95
    Subtotal:
  • On Sale
    CYLINDER WORKS Big Bore Gasket Kit 21003-G01

    CYLINDER WORKS Big Bore Gasket Kit 21003-G01

    CYLINDER WORKS

    MSRP: $91.95
    Now: $84.56
    Was: $93.95
    CYLINDER WORKS Big Bore Gasket Kit 21003-G01Ready-to-install, direct bolt-on cylinders require no re-plating and look virtually identical to the OEM cylinders, Cylinder kits include matched Vertex pistons to ensure longevity, performance and reduced...
    9341699
    SKU:
    9341699
    Availability:
    Ships Same Business Day
    Weight:
    0.17 LBS
    STYLE:
    BIG BORE
    RIDING STYLE:
    OFF-ROAD
    TYPE:
    TOP END
    UNITS:
    KIT
    PRODUCT NAME:
    GASKET KIT
    RIDING STYLE:
    ATV
    BORE SIZE METRIC:
    OVERSIZED (+3.00 MM)
    MATERIAL:
    NICKEL SILICON CARBIDE
    MSRP: $91.95
    Now: $84.56
    Was: $93.95
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $91.95
    Now: $84.56
    Was: $93.95
    Subtotal:
  • MOOSE RACING Case Saver CR125R 01-161

    MOOSE RACING Case Saver CR125R 01-161

    MOOSE RACING

    $23.95
    MOOSE RACING Case Saver CR125R 01-161Sturdy 6061 CNC-machined aluminum pieces help to prevent engine case damage, Better looking and more sturdy than OEM plastic guards, Engraved logo, Mounting hardware included, Made in the U.S.A.
    9500014
    SKU:
    9500014
    Availability:
    Ships Same Business Day
    Weight:
    0.12 LBS
    RIDING STYLE:
    OFF-ROAD
    COLOR/FINISH:
    ALUMINUM
    UNITS:
    EACH
    MATERIAL:
    6061 ALUMINUM
    BASE COLOR:
    SILVER
    PRODUCT NAME:
    CASE SAVER
    TYPE:
    ENGINE
    Qty in Cart: 0
    Quantity:
    Price:
    $23.95
    Subtotal:
  • MOOSE RACING Motor Gasket Kit with Seal - CR250 811257

    MOOSE RACING Motor Gasket Kit with Seal - CR250 811257

    MOOSE RACING

    $72.95
    MOOSE RACING Motor Gasket Kit with Seal CR250 811257Moose 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...
    M811257
    SKU:
    M811257
    Availability:
    Ships Same Business Day
    Weight:
    0.31 LBS
    PRODUCT NAME:
    GASKET
    UNITS:
    KIT
    RIDING STYLE:
    OFF-ROAD
    TYPE:
    COMPLETE
    THICKNESS IMPERIAL:
    0,040'
    THICKNESS METRIC:
    1.02 MM
    TYPE:
    ENGINE
    $72.95
    Qty in Cart: 0
    Quantity:
    Price:
    $72.95
    Subtotal:
  • MOOSE RACING Engine Oil Seal Kit - Honda 822220

    MOOSE RACING Engine Oil Seal Kit - Honda 822220

    MOOSE RACING

    $30.71
    MOOSE RACING Engine Oil Seal Kit Honda 822220Includes every seal in a engine including crank shaft seals, Does not include valve stem seal, Made in the USA
    9351021
    SKU:
    9351021
    Availability:
    Ships Same Business Day
    Weight:
    0.05 LBS
    PRODUCT NAME:
    SEAL KIT
    UNITS:
    KIT
    APPLICATION:
    ENGINE
    RIDING STYLE:
    ADVENTURE TOURING / DUAL-SPORT
    TYPE:
    OIL
    $30.71
    Qty in Cart: 0
    Quantity:
    Price:
    $30.71
    Subtotal:
  • MOOSE RACING Engine Oil Seal Kit - Yamaha 822308

    MOOSE RACING Engine Oil Seal Kit - Yamaha 822308

    MOOSE RACING

    $29.69
    MOOSE RACING Engine Oil Seal Kit Yamaha 822308Includes every seal in a engine including crank shaft seals, Does not include valve stem seal, Made in the USA
    9351022
    SKU:
    9351022
    Availability:
    Ships Same Business Day
    Weight:
    0.05 LBS
    PRODUCT NAME:
    SEAL KIT
    RIDING STYLE:
    OFF-ROAD
    TYPE:
    OIL
    UNITS:
    KIT
    APPLICATION:
    ENGINE
    RIDING STYLE:
    ADVENTURE TOURING / DUAL-SPORT
    $29.69
    Qty in Cart: 0
    Quantity:
    Price:
    $29.69
    Subtotal:
  • MOOSE RACING Engine Oil Seal Kit - Honda 822315

    MOOSE RACING Engine Oil Seal Kit - Honda 822315

    MOOSE RACING

    $51.73
    MOOSE RACING Engine Oil Seal Kit Honda 822315Includes every seal in a engine including crank shaft seals, Does not include valve stem seal, Made in the USA
    9351023
    SKU:
    9351023
    Availability:
    Ships Same Business Day
    Weight:
    0.15 LBS
    PRODUCT NAME:
    SEAL KIT
    RIDING STYLE:
    OFF-ROAD
    UNITS:
    KIT
    APPLICATION:
    ENGINE
    TYPE:
    OIL
    $51.73
    Qty in Cart: 0
    Quantity:
    Price:
    $51.73
    Subtotal:
  • MOOSE RACING Engine Oil Seal Kit - Honda 822331

    MOOSE RACING Engine Oil Seal Kit - Honda 822331

    MOOSE RACING

    $12.73
    MOOSE RACING Engine Oil Seal Kit Honda 822331Includes every seal in a engine including crank shaft seals, Does not include valve stem seal, Made in the USA
    9351024
    SKU:
    9351024
    Availability:
    Ships Same Business Day
    Weight:
    0.05 LBS
    APPLICATION:
    ENGINE
    TYPE:
    OIL
    PRODUCT NAME:
    SEAL KIT
    RIDING STYLE:
    OFF-ROAD
    UNITS:
    KIT
    $12.73
    Qty in Cart: 0
    Quantity:
    Price:
    $12.73
    Subtotal:
  • MOOSE RACING Motor Gasket Kit with Seal - RM250 811580

    MOOSE RACING Motor Gasket Kit with Seal - RM250 811580

    MOOSE RACING

    $84.95
    MOOSE RACING Motor Gasket Kit with Seal RM250 811580Moose 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...
    M811580
    SKU:
    M811580
    Availability:
    Ships Same Business Day
    Weight:
    0.25 LBS
    TYPE:
    ENGINE
    RIDING STYLE:
    OFF-ROAD
    TYPE:
    COMPLETE
    PRODUCT NAME:
    GASKET
    UNITS:
    KIT
    $84.95
    Qty in Cart: 0
    Quantity:
    Price:
    $84.95
    Subtotal:
  • MOOSE RACING Motor Gasket Kit with Seal - RM250 811581

    MOOSE RACING Motor Gasket Kit with Seal - RM250 811581

    MOOSE RACING

    $84.95
    MOOSE RACING Motor Gasket Kit with Seal RM250 811581Moose 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...
    M811581
    SKU:
    M811581
    Availability:
    Ships Same Business Day
    Weight:
    0.31 LBS
    RIDING STYLE:
    OFF-ROAD
    TYPE:
    COMPLETE
    TYPE:
    ENGINE
    PRODUCT NAME:
    GASKET
    UNITS:
    KIT
    $84.95
    Qty in Cart: 0
    Quantity:
    Price:
    $84.95
    Subtotal:
  • MOOSE RACING Motor Gasket Kit with Seal - RM250 811583

    MOOSE RACING Motor Gasket Kit with Seal - RM250 811583

    MOOSE RACING

    $98.95
    MOOSE RACING Motor Gasket Kit with Seal RM250 811583Moose 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...
    M811583
    SKU:
    M811583
    Availability:
    Ships Same Business Day
    Weight:
    0.25 LBS
    RIDING STYLE:
    OFF-ROAD
    TYPE:
    COMPLETE
    PRODUCT NAME:
    GASKET
    TYPE:
    ENGINE
    UNITS:
    KIT
    Qty in Cart: 0
    Quantity:
    Price:
    $98.95
    Subtotal:
  • MOOSE RACING Motor Gasket Kit with Seal - RM250 811587

    MOOSE RACING Motor Gasket Kit with Seal - RM250 811587

    MOOSE RACING

    $97.14
    MOOSE RACING Motor Gasket Kit with Seal RM250 811587Moose 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...
    M811587
    SKU:
    M811587
    Availability:
    Ships Same Business Day
    Weight:
    0.25 LBS
    PRODUCT NAME:
    GASKET
    UNITS:
    KIT
    RIDING STYLE:
    OFF-ROAD
    TYPE:
    COMPLETE
    TYPE:
    ENGINE
    Qty in Cart: 0
    Quantity:
    Price:
    $97.14
    Subtotal:
  • MOOSE RACING Motor Gasket Kit with Seal - YZ80 811613

    MOOSE RACING Motor Gasket Kit with Seal - YZ80 811613

    MOOSE RACING

    $50.97
    MOOSE RACING Motor Gasket Kit with Seal YZ80 811613Moose 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 seals...
    M811613
    SKU:
    M811613
    Availability:
    Ships Same Business Day
    Weight:
    0.19 LBS
    TYPE:
    ENGINE
    PRODUCT NAME:
    GASKET
    RIDING STYLE:
    OFF-ROAD
    TYPE:
    COMPLETE
    UNITS:
    KIT
    $50.97
    Qty in Cart: 0
    Quantity:
    Price:
    $50.97
    Subtotal:
  • MOOSE RACING Inner Clutch Cover Gasket 816319

    MOOSE RACING Inner Clutch Cover Gasket 816319

    MOOSE RACING

    $38.72
    MOOSE RACING Inner Clutch Cover Gasket 816319Moose can now handle all your gasket and seal needs at a fraction of OEM cast, High-tech materials provide unmatched reliability and performance, Rebuild the engine and transmissions with total confidence as...
    9346153
    SKU:
    9346153
    Availability:
    Ships Same Business Day
    Weight:
    0.11 LBS
    UNITS:
    EACH
    PRODUCT NAME:
    GASKET
    RIDING STYLE:
    OFF-ROAD
    TYPE:
    CLUTCH COVER
    $38.72
    Qty in Cart: 0
    Quantity:
    Price:
    $38.72
    Subtotal:
  • MOOSE RACING Ignition Cover Gasket 816510

    MOOSE RACING Ignition Cover Gasket 816510

    MOOSE RACING

    $6.12
    MOOSE RACING Ignition Cover Gasket 816510Made in the U.S.A.
    9346154
    SKU:
    9346154
    Availability:
    Ships Same Business Day
    Weight:
    0.10 LBS
    TYPE:
    IGNITION COVER
    RIDING STYLE:
    OFF-ROAD
    PRODUCT NAME:
    GASKET
    UNITS:
    EACH
    $6.12
    Qty in Cart: 0
    Quantity:
    Price:
    $6.12
    Subtotal:
  • MOOSE RACING Ignition Cover Gasket 816517

    MOOSE RACING Ignition Cover Gasket 816517

    MOOSE RACING

    $5.00
    MOOSE RACING Ignition Cover Gasket 816517Made in the U.S.A.
    9346155
    SKU:
    9346155
    Availability:
    Ships Same Business Day
    Weight:
    0.10 LBS
    TYPE:
    IGNITION COVER
    PRODUCT NAME:
    GASKET
    UNITS:
    EACH
    RIDING STYLE:
    OFF-ROAD
    $5.00
    Qty in Cart: 0
    Quantity:
    Price:
    $5.00
    Subtotal:
  • MOOSE RACING Ignition Cover Gasket 816532

    MOOSE RACING Ignition Cover Gasket 816532

    MOOSE RACING

    $8.69
    MOOSE RACING Ignition Cover Gasket 816532Made in the U.S.A.
    9346156
    SKU:
    9346156
    Availability:
    Ships Same Business Day
    Weight:
    0.10 LBS
    TYPE:
    IGNITION COVER
    RIDING STYLE:
    OFF-ROAD
    UNITS:
    EACH
    PRODUCT NAME:
    GASKET
    $8.69
    Qty in Cart: 0
    Quantity:
    Price:
    $8.69
    Subtotal:
  • MOOSE RACING Motor Gasket Kit with Seal - Yamaha 811994

    MOOSE RACING Motor Gasket Kit with Seal - Yamaha 811994

    MOOSE RACING

    $164.20
    MOOSE RACING Motor Gasket Kit with Seal Yamaha 811994Moose 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...
    9345999
    SKU:
    9345999
    Availability:
    Ships Same Business Day
    Weight:
    0.40 LBS
    ENGINE TYPE:
    4-STROKE
    TYPE:
    COMPLETE
    TYPE:
    ENGINE
    PRODUCT NAME:
    GASKET
    RIDING STYLE:
    OFF-ROAD
    UNITS:
    KIT
    $164.20
    Qty in Cart: 0
    Quantity:
    Price:
    $164.20
    Subtotal:
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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!