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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
  • HOT RODS Crankshaft Kit CBK0002

    HOT RODS Crankshaft Kit CBK0002

    HOT RODS

    $368.95
    HOT RODS Crankshaft Kit CBK0002Assembly sold complete with Hot Rods connecting rod, Factory assembled and true to OEM specifications, Hot Rods cranks will meet or surpass the OEM in performance, Ready for installation, Crankshaft is completely...
    09210261
    SKU:
    09210261
    Availability:
    Ships Same Business Day
    Weight:
    6.65 LBS
    PRODUCT NAME:
    CRANKSHAFT KIT
    TYPE:
    OEM
    RIDING STYLE:
    OFF-ROAD
    UNITS:
    KIT
    $368.95
    Qty in Cart: 0
    Quantity:
    Price:
    $368.95
    Subtotal:
  • COMETIC Top End Gasket Set - Suzuki C7778

    COMETIC Top End Gasket Set - Suzuki C7778

    COMETIC

    $40.95
    COMETIC Top End Gasket Set Suzuki C7778Top end gasket kits include correct base, head gasket and cylinder O-rings as well as other top end specific O-rings or seals needed for R&R of top end, MLS head gaskets promote an even torque load across the gasket...
    C7778
    SKU:
    C7778
    Availability:
    Ships Same Business Day
    Weight:
    0.15 LBS
    PRODUCT NAME:
    GASKET KIT
    UNITS:
    KIT
    RIDING STYLE:
    OFF-ROAD
    TYPE:
    TOP END
    $40.95
    Qty in Cart: 0
    Quantity:
    Price:
    $40.95
    Subtotal:
  • COMETIC Top End Gasket Set - YZ85 C7851

    COMETIC Top End Gasket Set - YZ85 C7851

    COMETIC

    $31.95
    COMETIC Top End Gasket Set YZ85 C7851Top end gasket kits include correct base, head gasket and cylinder O-rings as well as other top end specific O-rings or seals needed for R&R of top end, MLS head gaskets promote an even torque load across the gasket...
    C7851
    SKU:
    C7851
    Availability:
    Ships Same Business Day
    Weight:
    0.05 LBS
    PRODUCT NAME:
    GASKET KIT
    UNITS:
    KIT
    RIDING STYLE:
    OFF-ROAD
    TYPE:
    TOP END
    Qty in Cart: 0
    Quantity:
    Price:
    $31.95
    Subtotal:
  • COMETIC Shift Shaft Seal OS236

    COMETIC Shift Shaft Seal OS236

    COMETIC

    $5.95
    COMETIC Shift Shaft Seal OS236High-quality seals allow for proper sealing of common leaks, Made of quality materials developed for maximum performance tolerances and longevity, Recommended to replace the countershaft sprocket seal when...
    09350875
    SKU:
    09350875
    Availability:
    Ships Same Business Day
    Weight:
    0.10 LBS
    APPLICATION:
    SHIFTER SHAFT
    RIDING STYLE:
    STREET
    PRODUCT NAME:
    SEAL
    UNITS:
    EACH
    $5.95
    Qty in Cart: 0
    Quantity:
    Price:
    $5.95
    Subtotal:
  • COMETIC Water Pump Install - Yamaha C3057WP

    COMETIC Water Pump Install - Yamaha C3057WP

    COMETIC

    $42.95
    COMETIC Water Pump Install Yamaha C3057WPKits contain all components needed to properly replace water pump impeller or leaking water pump cover, Quality seals, O-rings, bearings, crush washers and AFM Cometic engine cover gaskets included for dependable,...
    09345381
    SKU:
    09345381
    Availability:
    Ships Same Business Day
    Weight:
    0.20 LBS
    RIDING STYLE:
    OFF-ROAD
    TYPE:
    WATER PUMP
    UNITS:
    KIT
    ENGINE TYPE:
    4-STROKE
    PRODUCT NAME:
    INSTALL KIT
    Qty in Cart: 0
    Quantity:
    Price:
    $42.95
    Subtotal:
  • COMETIC Top End Gaskets - KTM C3606

    COMETIC Top End Gaskets - KTM C3606

    COMETIC

    $74.95
    COMETIC Top End Gaskets KTM C3606Gaskets and gasket sets used by professionals in high-performance machines and as OE replacements worldwide, Each Kit contains the proper number of gaskets for one application, Made in the U.S.A.
    09345414
    SKU:
    09345414
    Availability:
    Ships Same Business Day
    Weight:
    0.15 LBS
    PRODUCT NAME:
    GASKET SET
    RIDING STYLE:
    OFF-ROAD
    TYPE:
    TOP END
    UNITS:
    SET
    $74.95
    Qty in Cart: 0
    Quantity:
    Price:
    $74.95
    Subtotal:
  • COMETIC Lower End Gaskets - KTM C3606BE

    COMETIC Lower End Gaskets - KTM C3606BE

    COMETIC

    $115.95
    COMETIC Lower End Gaskets KTM C3606BEGaskets and gasket sets used by professionals in high-performance machines and as OE replacements worldwide, Each Kit contains the proper number of gaskets for one application, Made in the U.S.A.
    09345415
    SKU:
    09345415
    Availability:
    Ships Same Business Day
    Weight:
    0.30 LBS
    PRODUCT NAME:
    GASKET SET
    RIDING STYLE:
    OFF-ROAD
    TYPE:
    BOTTOM END
    UNITS:
    SET
    $115.95
    Qty in Cart: 0
    Quantity:
    Price:
    $115.95
    Subtotal:
  • COMETIC Top End Gaskets - Kawasaki C3619

    COMETIC Top End Gaskets - Kawasaki C3619

    COMETIC

    $91.95
    COMETIC Top End Gaskets Kawasaki C3619Gaskets and gasket sets used by professionals in high-performance machines and as OE replacements worldwide, Each Kit contains the proper number of gaskets for one application, Made in the U.S.A.
    09345418
    SKU:
    09345418
    Availability:
    Ships Same Business Day
    Weight:
    0.15 LBS
    PRODUCT NAME:
    GASKET SET
    TYPE:
    TOP END
    UNITS:
    SET
    RIDING STYLE:
    OFF-ROAD
    Qty in Cart: 0
    Quantity:
    Price:
    $91.95
    Subtotal:
  • COMETIC Clutch Gasket - CR80 C7492

    COMETIC Clutch Gasket - CR80 C7492

    COMETIC

    $10.95
    COMETIC Clutch Gasket CR80 C7492Clutch cover gaskets are made form an AFM Material which is a chemically blown, compounded nitrile synthetic rubber bonded to an aluminum core, Aluminum core gives the gasket strength for a superior seal and prevents the...
    C7492
    SKU:
    C7492
    Availability:
    Ships Same Business Day
    Weight:
    0.10 LBS
    PRODUCT NAME:
    GASKET
    UNITS:
    EACH
    RIDING STYLE:
    OFF-ROAD
    TYPE:
    CLUTCH COVER
    MODEL:
    HI-PERFORMANCE
    Qty in Cart: 0
    Quantity:
    Price:
    $10.95
    Subtotal:
  • COMETIC Top End Gasket Set - XR650 C7681

    COMETIC Top End Gasket Set - XR650 C7681

    COMETIC

    $47.95
    COMETIC Top End Gasket Set XR650 C7681Top end gasket kits include correct base, head gasket and cylinder O-rings as well as other top end specific O-rings or seals needed for R&R of top end, MLS head gaskets promote an even torque load across the gasket...
    C7681
    SKU:
    C7681
    Availability:
    Ships Same Business Day
    Weight:
    0.10 LBS
    BORE SIZE METRIC:
    101.00 MM
    RIDING STYLE:
    OFF-ROAD
    PRODUCT NAME:
    GASKET KIT
    TYPE:
    TOP END
    UNITS:
    KIT
    $47.95
    Qty in Cart: 0
    Quantity:
    Price:
    $47.95
    Subtotal:
  • COMETIC Top End Gasket Set - Husqvarna C7734

    COMETIC Top End Gasket Set - Husqvarna C7734

    COMETIC

    $29.95
    COMETIC Top End Gasket Set Husqvarna C7734Top end gasket kits include correct base, head gasket and cylinder O-rings as well as other top end specific O-rings or seals needed for R&R of top end, MLS head gaskets promote an even torque load across the...
    C7734
    SKU:
    C7734
    Availability:
    Ships Same Business Day
    Weight:
    0.05 LBS
    BORE SIZE METRIC:
    54.00 MM
    THICKNESS IMPERIAL:
    0,012'
    THICKNESS METRIC:
    0.31 MM
    TYPE:
    TOP END
    UNITS:
    KIT
    PRODUCT NAME:
    GASKET KIT
    RIDING STYLE:
    OFF-ROAD
    Qty in Cart: 0
    Quantity:
    Price:
    $29.95
    Subtotal:
  • COMETIC Top End Gasket Set - Honda C7757

    COMETIC Top End Gasket Set - Honda C7757

    COMETIC

    $47.95
    COMETIC Top End Gasket Set Honda C7757Top end gasket kits include correct base, head gasket and cylinder O-rings as well as other top end specific O-rings or seals needed for R&R of top end, MLS head gaskets promote an even torque load across the gasket...
    C7757
    SKU:
    C7757
    Availability:
    Ships Same Business Day
    Weight:
    0.10 LBS
    BORE SIZE METRIC:
    54.00 MM
    THICKNESS IMPERIAL:
    0,012'
    THICKNESS METRIC:
    0.31 MM
    TYPE:
    TOP END
    PRODUCT NAME:
    GASKET KIT
    RIDING STYLE:
    OFF-ROAD
    UNITS:
    KIT
    $47.95
    Qty in Cart: 0
    Quantity:
    Price:
    $47.95
    Subtotal:
  • COMETIC Top End Gasket Set C7726

    COMETIC Top End Gasket Set C7726

    COMETIC

    $35.95
    COMETIC Top End Gasket Set C7726Top end gasket kits include correct base, head gasket and cylinder O-rings as well as other top end specific O-rings or seals needed for R&R of top end, MLS head gaskets promote an even torque load across the gasket...
    09341037
    SKU:
    09341037
    Availability:
    Ships Same Business Day
    Weight:
    0.10 LBS
    RIDING STYLE:
    OFF-ROAD
    TYPE:
    TOP END
    UNITS:
    KIT
    BORE SIZE METRIC:
    75.00 MM
    PRODUCT NAME:
    GASKET KIT
    $35.95
    Qty in Cart: 0
    Quantity:
    Price:
    $35.95
    Subtotal:
  • COMETIC Bottom End Gasket Set - Yamaha C3057BE

    COMETIC Bottom End Gasket Set - Yamaha C3057BE

    COMETIC

    $90.95
    COMETIC Bottom End Gasket Set Yamaha C3057BEBottom end gasket kits include correct oil seals, O-rings, drain plug washers and water pump cover gaskets as needed, Materials will vary depending on what is correct and engineered for specified application,...
    09344080
    SKU:
    09344080
    Availability:
    Ships Same Business Day
    Weight:
    0.25 LBS
    ENGINE TYPE:
    4-STROKE
    PRODUCT NAME:
    GASKET KIT
    RIDING STYLE:
    OFF-ROAD
    TYPE:
    BOTTOM END
    MODEL:
    HI-PERFORMANCE
    UNITS:
    KIT
    $90.95
    Qty in Cart: 0
    Quantity:
    Price:
    $90.95
    Subtotal:
  • COMETIC Top End Gasket Set - Kawasaki C3501

    COMETIC Top End Gasket Set - Kawasaki C3501

    COMETIC

    $33.95
    COMETIC Top End Gasket Set Kawasaki C3501Top end gasket kits include correct base, head gasket and cylinder O-rings as well as other top end specific O-rings or seals needed for R&R of top end, MLS head gaskets promote an even torque load across the...
    09344186
    SKU:
    09344186
    Availability:
    Ships Same Business Day
    Weight:
    0.10 LBS
    UNITS:
    KIT
    PRODUCT NAME:
    GASKET KIT
    TYPE:
    TOP END
    BORE SIZE METRIC:
    48.50 MM
    RIDING STYLE:
    OFF-ROAD
    $33.95
    Qty in Cart: 0
    Quantity:
    Price:
    $33.95
    Subtotal:
  • COMETIC Exhaust Gasket - Kawasaki C3501EX

    COMETIC Exhaust Gasket - Kawasaki C3501EX

    COMETIC

    $15.95
    COMETIC Exhaust Gasket Kawasaki C3501EXGasket material and construction will vary by application to ensure longevity with leak free performance under all conditions, 4-stroke applications utilize a double-sided Viton® rubber-coated stainless steel gasket...
    09344187
    SKU:
    09344187
    Availability:
    Ships Same Business Day
    Weight:
    0.10 LBS
    UNITS:
    SET
    BORE SIZE METRIC:
    48.50 MM
    RIDING STYLE:
    OFF-ROAD
    PRODUCT NAME:
    GASKET
    MODEL:
    HI-PERFORMANCE
    TYPE:
    EXHAUST
    $15.95
    Qty in Cart: 0
    Quantity:
    Price:
    $15.95
    Subtotal:
  • COMETIC Top End Gasket Set - KTM C3503

    COMETIC Top End Gasket Set - KTM C3503

    COMETIC

    $36.95
    COMETIC Top End Gasket Set KTM C3503Top end gasket kits include correct base, head gasket and cylinder O-rings as well as other top end specific O-rings or seals needed for R&R of top end, MLS head gaskets promote an even torque load across the gasket...
    09344189
    SKU:
    09344189
    Availability:
    Ships Same Business Day
    Weight:
    0.10 LBS
    BORE SIZE METRIC:
    39.00 MM
    RIDING STYLE:
    OFF-ROAD
    TYPE:
    TOP END
    PRODUCT NAME:
    GASKET KIT
    UNITS:
    KIT
    Qty in Cart: 0
    Quantity:
    Price:
    $36.95
    Subtotal:
  • COMETIC Bottom End Gasket Set - KTM C3517

    COMETIC Bottom End Gasket Set - KTM C3517

    COMETIC

    $47.95
    COMETIC Bottom End Gasket Set KTM C3517Bottom end gasket kits include correct oil seals, O-rings, drain plug washers and water pump cover gaskets as needed, Materials will vary depending on what is correct and engineered for specified application,...
    09344200
    SKU:
    09344200
    Availability:
    Ships Same Business Day
    Weight:
    0.10 LBS
    PRODUCT NAME:
    GASKET KIT
    TYPE:
    BOTTOM END
    MODEL:
    HI-PERFORMANCE
    RIDING STYLE:
    OFF-ROAD
    UNITS:
    KIT
    $47.95
    Qty in Cart: 0
    Quantity:
    Price:
    $47.95
    Subtotal:
  • COMETIC Top End Gasket Set - Kawasaki C3541

    COMETIC Top End Gasket Set - Kawasaki C3541

    COMETIC

    $33.95
    COMETIC Top End Gasket Set Kawasaki C3541Top end gasket kits include correct base, head gasket and cylinder O-rings as well as other top end specific O-rings or seals needed for R&R of top end, MLS head gaskets promote an even torque load across the...
    09344208
    SKU:
    09344208
    Availability:
    Ships Same Business Day
    Weight:
    0.10 LBS
    THICKNESS IMPERIAL:
    0,012'
    PRODUCT NAME:
    GASKET KIT
    THICKNESS METRIC:
    0.31 MM
    BORE SIZE METRIC:
    48.50 MM
    RIDING STYLE:
    OFF-ROAD
    UNITS:
    KIT
    TYPE:
    TOP END
    $33.95
    Qty in Cart: 0
    Quantity:
    Price:
    $33.95
    Subtotal:
  • COMETIC Top End Gasket Set - Yamaha C3550-EST

    COMETIC Top End Gasket Set - Yamaha C3550-EST

    COMETIC

    $75.95
    COMETIC Top End Gasket Set Yamaha C3550-ESTTop end gasket kits include correct base, head gasket and cylinder O-rings as well as other top end specific O-rings or seals needed for R&R of top end, MLS head gaskets promote an even torque load across the...
    09344213
    SKU:
    09344213
    Availability:
    Ships Same Business Day
    Weight:
    0.15 LBS
    RIDING STYLE:
    OFF-ROAD
    TYPE:
    TOP END
    UNITS:
    KIT
    BORE SIZE METRIC:
    80.00 MM
    THICKNESS IMPERIAL:
    0,027'
    THICKNESS METRIC:
    0.25 MM
    THICKNESS IMPERIAL:
    0,010'
    THICKNESS METRIC:
    0.69 MM
    ENGINE TYPE:
    4-STROKE
    PRODUCT NAME:
    GASKET KIT
    $75.95
    Qty in Cart: 0
    Quantity:
    Price:
    $75.95
    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!