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
  • JAMES GASKET Crankcase Saver Kit - Big Twin 11125-XMF

    JAMES GASKET Crankcase Saver Kit - Big Twin 11125-XMF

    JAMES GASKET

    $51.95
    JAMES GASKET Crankcase Saver Kit Big Twin 11125-XMFKit used when O-ring ridge is broken or bent
    09341581
    SKU:
    09341581
    Availability:
    Ships Same Business Day
    Weight:
    0.30 LBS
    MATERIAL:
    FOAMET
    RIDING STYLE:
    STREET
    PRODUCT NAME:
    GASKET KIT
    UNITS:
    KIT
    TYPE:
    CRANKCASE SAVER
    $51.95
    Qty in Cart: 0
    Quantity:
    Price:
    $51.95
    Subtotal:
  • JAMES GASKET Crankcase Saver Kit - Big Twin 11125-XMSF

    JAMES GASKET Crankcase Saver Kit - Big Twin 11125-XMSF

    JAMES GASKET

    $51.95
    JAMES GASKET Crankcase Saver Kit Big Twin 11125-XMSFKit used when O-ring ridge is broken or bent
    09341582
    SKU:
    09341582
    Availability:
    Ships Same Business Day
    Weight:
    0.25 LBS
    MATERIAL:
    FOAMET
    RIDING STYLE:
    STREET
    TYPE:
    CRANKCASE SAVER
    PRODUCT NAME:
    GASKET KIT
    UNITS:
    KIT
    $51.95
    Qty in Cart: 0
    Quantity:
    Price:
    $51.95
    Subtotal:
  • JAMES GASKET Base Gasket - .016" - XL 16774-96-XT1

    JAMES GASKET Base Gasket - .016" - XL 16774-96-XT1

    JAMES GASKET

    $44.95
    JAMES GASKET Base Gasket .016" XL 16774-96-XT1Require no gasket sealer, Made in the U.S.A.
    09341583
    SKU:
    09341583
    Availability:
    Ships Same Business Day
    Weight:
    0.05 LBS
    THICKNESS IMPERIAL:
    0.016'
    MATERIAL:
    STEEL
    PRODUCT NAME:
    GASKET
    THICKNESS METRIC:
    0.41 MM
    TYPE:
    CYLINDER BASE
    UNITS:
    PAIR
    FEATURES:
    BEADED
    RIDING STYLE:
    STREET
    MATERIAL:
    RUBBER
    $44.95
    Qty in Cart: 0
    Quantity:
    Price:
    $44.95
    Subtotal:
  • JAMES GASKET Base Gasket - .01" - XL 16774-96-XT2

    JAMES GASKET Base Gasket - .01" - XL 16774-96-XT2

    JAMES GASKET

    $44.95
    JAMES GASKET Base Gasket .01" XL 16774-96-XT2Require no gasket sealer, Made in the U.S.A.
    09341584
    SKU:
    09341584
    Availability:
    Ships Same Business Day
    Weight:
    0.05 LBS
    RIDING STYLE:
    STREET
    THICKNESS METRIC:
    0.25 MM
    FEATURES:
    BEADED
    THICKNESS IMPERIAL:
    0,010'
    MATERIAL:
    STEEL
    PRODUCT NAME:
    GASKET
    UNITS:
    PAIR
    MATERIAL:
    RUBBER
    TYPE:
    CYLINDER BASE
    $44.95
    Qty in Cart: 0
    Quantity:
    Price:
    $44.95
    Subtotal:
  • JAMES GASKET Motor Gasket Kit - XL 17026-86-MLS

    JAMES GASKET Motor Gasket Kit - XL 17026-86-MLS

    JAMES GASKET

    $196.95
    JAMES GASKET Motor Gasket Kit XL 17026-86-MLSTo-quality gaskets, oil seals, and o-rings necessary to rebuild an engine, Made in the U.S.A.
    09341585
    SKU:
    09341585
    Availability:
    Ships Same Business Day
    Weight:
    1.25 LBS
    PRODUCT NAME:
    GASKET KIT
    RIDING STYLE:
    STREET
    TYPE:
    COMPLETE
    UNITS:
    KIT
    $196.95
    Qty in Cart: 0
    Quantity:
    Price:
    $196.95
    Subtotal:
  • JAMES GASKET Motor Gasket Kit - XL 17026-91-MLS

    JAMES GASKET Motor Gasket Kit - XL 17026-91-MLS

    JAMES GASKET

    $226.95
    JAMES GASKET Motor Gasket Kit XL 17026-91-MLSTo-quality gaskets, oil seals, and o-rings necessary to rebuild an engine, Made in the U.S.A.
    09341586
    SKU:
    09341586
    Availability:
    Ships Same Business Day
    Weight:
    1.45 LBS
    PRODUCT NAME:
    GASKET KIT
    TYPE:
    COMPLETE
    RIDING STYLE:
    STREET
    UNITS:
    KIT
    $226.95
    Qty in Cart: 0
    Quantity:
    Price:
    $226.95
    Subtotal:
  • JAMES GASKET Top End Gasket Kit - XL 17032-86-MLS

    JAMES GASKET Top End Gasket Kit - XL 17032-86-MLS

    JAMES GASKET

    $145.95
    JAMES GASKET Top End Gasket Kit XL 17032-86-MLSTop-quality gaskets, oil seals and O-rings necessary to rebuild an engine, Made in the U.S.A.
    09341587
    SKU:
    09341587
    Availability:
    Ships Same Business Day
    Weight:
    0.75 LBS
    TYPE:
    TOP END
    RIDING STYLE:
    STREET
    PRODUCT NAME:
    GASKET KIT
    UNITS:
    KIT
    $145.95
    Qty in Cart: 0
    Quantity:
    Price:
    $145.95
    Subtotal:
  • JAMES GASKET Motor Gasket Kit - Big Twin 17035-83-MLS

    JAMES GASKET Motor Gasket Kit - Big Twin 17035-83-MLS

    JAMES GASKET

    $164.95
    JAMES GASKET Motor Gasket Kit Big Twin 17035-83-MLSContain gaskets, oil seals and O-rings necessary to completely rebuild a Panhead engine, Made in the U.S.A.
    09341589
    SKU:
    09341589
    Availability:
    Ships Same Business Day
    Weight:
    1.00 LBS
    BORE SIZE IMPERIAL:
    3.500'
    TYPE:
    COMPLETE
    PRODUCT NAME:
    GASKET KIT
    TYPE:
    MOTOR
    UNITS:
    KIT
    RIDING STYLE:
    STREET
    $164.95
    Qty in Cart: 0
    Quantity:
    Price:
    $164.95
    Subtotal:
  • JAMES GASKET Motor Gasket Kit - Big Twin 17041-92-MLS

    JAMES GASKET Motor Gasket Kit - Big Twin 17041-92-MLS

    JAMES GASKET

    $154.95
    JAMES GASKET Motor Gasket Kit Big Twin 17041-92-MLSContain gaskets, oil seals and O-rings necessary to completely rebuild a Panhead engine, Made in the U.S.A.
    09341591
    SKU:
    09341591
    Availability:
    Ships Same Business Day
    Weight:
    1.00 LBS
    PRODUCT NAME:
    GASKET KIT
    TYPE:
    COMPLETE
    BORE SIZE IMPERIAL:
    3.500'
    RIDING STYLE:
    STREET
    TYPE:
    MOTOR
    UNITS:
    KIT
    $154.95
    Qty in Cart: 0
    Quantity:
    Price:
    $154.95
    Subtotal:
  • JAMES GASKET Top End Gasket Kit - Twin Cam 88" 17052-05

    JAMES GASKET Top End Gasket Kit - Twin Cam 88" 17052-05

    JAMES GASKET

    $125.95
    JAMES GASKET Top End Gasket Kit Twin Cam 88" 17052-05Top-quality gaskets, oil seals and O-rings necessary to rebuild an engine, Made in the U.S.A.
    09341592
    SKU:
    09341592
    Availability:
    Ships Same Business Day
    Weight:
    0.85 LBS
    BORE SIZE IMPERIAL:
    3.750'
    THICKNESS IMPERIAL:
    0,046'
    TYPE:
    TOP END
    UNITS:
    KIT
    PRODUCT NAME:
    GASKET KIT
    THICKNESS METRIC:
    1.17 MM
    RIDING STYLE:
    STREET
    $125.95
    Qty in Cart: 0
    Quantity:
    Price:
    $125.95
    Subtotal:
  • JAMES GASKET Top End Gasket Kit - Twin Cam 95" 17052-05-X

    JAMES GASKET Top End Gasket Kit - Twin Cam 95" 17052-05-X

    JAMES GASKET

    $125.95
    JAMES GASKET Top End Gasket Kit Twin Cam 95" 17052-05-XTop-quality gaskets, oil seals and O-rings necessary to rebuild an engine, Made in the U.S.A.
    09341593
    SKU:
    09341593
    Availability:
    Ships Same Business Day
    Weight:
    0.85 LBS
    BORE SIZE IMPERIAL:
    3.875'
    RIDING STYLE:
    STREET
    THICKNESS IMPERIAL:
    0,046'
    TYPE:
    TOP END
    UNITS:
    KIT
    PRODUCT NAME:
    GASKET KIT
    THICKNESS METRIC:
    1.17 MM
    $125.95
    Qty in Cart: 0
    Quantity:
    Price:
    $125.95
    Subtotal:
  • JAMES GASKET Motor Gasket Kit - .046" - Twin Cam 17053-05

    JAMES GASKET Motor Gasket Kit - .046" - Twin Cam 17053-05

    JAMES GASKET

    $138.95
    JAMES GASKET Motor Gasket Kit .046" Twin Cam 17053-05Contain gaskets, oil seals and O-rings necessary to completely rebuild a Panhead engine, Made in the U.S.A.
    09341594
    SKU:
    09341594
    Availability:
    Ships Same Business Day
    Weight:
    0.90 LBS
    THICKNESS METRIC:
    1.17 MM
    PRODUCT NAME:
    GASKET KIT
    RIDING STYLE:
    STREET
    UNITS:
    KIT
    THICKNESS IMPERIAL:
    0,046'
    TYPE:
    COMPLETE
    BORE SIZE IMPERIAL:
    3.750'
    TYPE:
    MOTOR
    $138.95
    Qty in Cart: 0
    Quantity:
    Price:
    $138.95
    Subtotal:
  • JAMES GASKET Motor Gasket Kit - .036" - Twin Cam 17053-05-X JAMES GASKET Motor Gasket Kit - .036" - Twin Cam 17053-05-X

    JAMES GASKET Motor Gasket Kit - .036" - Twin Cam 17053-05-X

    JAMES GASKET

    $138.95
    JAMES GASKET Motor Gasket Kit .036" Twin Cam 17053-05-XContain gaskets, oil seals and O-rings necessary to completely rebuild a Panhead engine, Made in the U.S.A.
    09341595
    SKU:
    09341595
    Availability:
    Ships Same Business Day
    Weight:
    0.93 LBS
    PRODUCT NAME:
    GASKET KIT
    TYPE:
    MOTOR
    UNITS:
    KIT
    BORE SIZE IMPERIAL:
    3.750'
    THICKNESS IMPERIAL:
    0,036'
    TYPE:
    COMPLETE
    RIDING STYLE:
    STREET
    THICKNESS METRIC:
    0.91 MM
    $138.95
    Qty in Cart: 0
    Quantity:
    Price:
    $138.95
    Subtotal:
  • JAMES GASKET Top End Gasket MLS Kit 17054-05-MLS

    JAMES GASKET Top End Gasket MLS Kit 17054-05-MLS

    JAMES GASKET

    $160.95
    JAMES GASKET Top End Gasket MLS Kit 17054-05-MLSTop-quality gaskets, oil seals and O-rings necessary to rebuild an engine, Made in the U.S.A.
    09341596
    SKU:
    09341596
    Availability:
    Ships Same Business Day
    Weight:
    0.93 LBS
    BORE SIZE IMPERIAL:
    3.875'
    PRODUCT NAME:
    GASKET KIT
    UNITS:
    KIT
    RIDING STYLE:
    STREET
    TYPE:
    TOP END
    $160.95
    Qty in Cart: 0
    Quantity:
    Price:
    $160.95
    Subtotal:
  • JAMES GASKET Top End Gasket MLS Kit - Twin Cam 17054-99-MLS

    JAMES GASKET Top End Gasket MLS Kit - Twin Cam 17054-99-MLS

    JAMES GASKET

    $160.95
    JAMES GASKET Top End Gasket MLS Kit Twin Cam 17054-99-MLSTop-quality gaskets, oil seals and O-rings necessary to rebuild an engine, Made in the U.S.A.
    09341598
    SKU:
    09341598
    Availability:
    Ships Same Business Day
    Weight:
    0.84 LBS
    BORE SIZE IMPERIAL:
    3.875'
    RIDING STYLE:
    STREET
    UNITS:
    KIT
    PRODUCT NAME:
    GASKET KIT
    TYPE:
    TOP END
    $160.95
    Qty in Cart: 0
    Quantity:
    Price:
    $160.95
    Subtotal:
  • JAMES GASKET Motor Gasket Kit - Twin Cam 17055-05

    JAMES GASKET Motor Gasket Kit - Twin Cam 17055-05

    JAMES GASKET

    $134.95
    JAMES GASKET Motor Gasket Kit Twin Cam 17055-05Contain gaskets, oil seals and O-rings necessary to completely rebuild a Panhead engine, Made in the U.S.A.
    09341599
    SKU:
    09341599
    Availability:
    Ships Same Business Day
    Weight:
    0.91 LBS
    BORE SIZE IMPERIAL:
    3.875'
    RIDING STYLE:
    STREET
    THICKNESS IMPERIAL:
    0,046'
    UNITS:
    KIT
    THICKNESS METRIC:
    1.17 MM
    TYPE:
    MOTOR
    PRODUCT NAME:
    GASKET KIT
    TYPE:
    COMPLETE
    $134.95
    Qty in Cart: 0
    Quantity:
    Price:
    $134.95
    Subtotal:
  • JAMES GASKET Motor Gasket MLS Kit - Twin Cam 17055-05-MLS

    JAMES GASKET Motor Gasket MLS Kit - Twin Cam 17055-05-MLS

    JAMES GASKET

    $163.95
    JAMES GASKET Motor Gasket MLS Kit Twin Cam 17055-05-MLSContain gaskets, oil seals and O-rings necessary to completely rebuild a Panhead engine, Made in the U.S.A.
    09341600
    SKU:
    09341600
    Availability:
    Ships Same Business Day
    Weight:
    1.02 LBS
    TYPE:
    COMPLETE
    TYPE:
    MOTOR
    UNITS:
    KIT
    BORE SIZE IMPERIAL:
    3.875'
    RIDING STYLE:
    STREET
    PRODUCT NAME:
    GASKET KIT
    $163.95
    Qty in Cart: 0
    Quantity:
    Price:
    $163.95
    Subtotal:
  • JAMES GASKET Motor Gasket MLS Kit - Twin Cam 17055-99-MLS

    JAMES GASKET Motor Gasket MLS Kit - Twin Cam 17055-99-MLS

    JAMES GASKET

    $163.95
    JAMES GASKET Motor Gasket MLS Kit Twin Cam 17055-99-MLSContain gaskets, oil seals and O-rings necessary to completely rebuild a Panhead engine, Made in the U.S.A.
    09341601
    SKU:
    09341601
    Availability:
    Ships Same Business Day
    Weight:
    0.85 LBS
    BORE SIZE IMPERIAL:
    3.875'
    RIDING STYLE:
    STREET
    TYPE:
    COMPLETE
    TYPE:
    MOTOR
    UNITS:
    KIT
    PRODUCT NAME:
    GASKET KIT
    $163.95
    Qty in Cart: 0
    Quantity:
    Price:
    $163.95
    Subtotal:
  • JAMES GASKET Cam Cover Gasket - XL 25224-52-X

    JAMES GASKET Cam Cover Gasket - XL 25224-52-X

    JAMES GASKET

    $37.30
    JAMES GASKET Cam Cover Gasket XL 25224-52-XReplacement gaskets for cam chests
    09341606
    SKU:
    09341606
    Availability:
    Ships Same Business Day
    Weight:
    0.15 LBS
    FEATURES:
    BEADED
    MATERIAL:
    PAPER
    PRODUCT NAME:
    GASKET
    THICKNESS METRIC:
    0.79 MM
    TYPE:
    CAM COVER
    RIDING STYLE:
    STREET
    THICKNESS:
    0,79 MM (0,031')
    THICKNESS IMPERIAL:
    0,031'
    UNITS:
    5 PACK
    $37.30
    Qty in Cart: 0
    Quantity:
    Price:
    $37.30
    Subtotal:
  • JAMES GASKET Derby Cover Paper Gasket - Twin Cam 25416-06-X

    JAMES GASKET Derby Cover Paper Gasket - Twin Cam 25416-06-X

    JAMES GASKET

    $36.80
    JAMES GASKET Derby Cover Paper Gasket Twin Cam 25416-06-XLatest additions to our line of high-quality genuine James gaskets, seals and O-rings, Cover seals are a seal, not a gasket, Cover seals are molded rubber, beaded oil seals with metal inserts and...
    09341607
    SKU:
    09341607
    Availability:
    Ships Same Business Day
    Weight:
    0.22 LBS
    FEATURES:
    BEADED
    MATERIAL:
    SILICONE
    PRODUCT NAME:
    GASKET
    STYLE:
    PRIMARY
    UNITS:
    5 PACK
    MATERIAL:
    PAPER
    RIDING STYLE:
    STREET
    TYPE:
    DERBY COVER
    $36.80
    Qty in Cart: 0
    Quantity:
    Price:
    $36.80
    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!