Engine

Engine

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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  • MOOSE RACING Motor Gasket Kit with Seal - TTR125 811640
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    MOOSE RACING Motor Gasket Kit with Seal - TTR125 811640

    MOOSE RACING

    $76.48
    MOOSE RACING Motor Gasket Kit with Seal TTR125 811640Moose 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...
    9340490
    SKU:
    9340490
    Availability:
    Ships Same Business Day
    Weight:
    0.20 LBS
    Add to Cart
    $76.48
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    Price:
    $76.48
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  • MOOSE RACING Top End Gasket Kit - YZ125 810641
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    MOOSE RACING Top End Gasket Kit - YZ125 810641

    MOOSE RACING

    $24.26
    MOOSE RACING Top End Gasket Kit YZ125 810641Moose 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...
    9340491
    SKU:
    9340491
    Availability:
    Ships Same Business Day
    Weight:
    0.07 LBS
    RIDING STYLE:
    OFF-ROAD
    UNITS:
    KIT
    TYPE:
    TOP END
    PRODUCT NAME:
    GASKET
    Add to Cart
    $24.26
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    Qty in Cart: 0
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    Price:
    $24.26
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  • MOOSE RACING Slave Cylinder Rebuild Kit 18-6001
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    MOOSE RACING Slave Cylinder Rebuild Kit 18-6001

    MOOSE RACING

    $36.95
    MOOSE RACING Slave Cylinder Rebuild Kit 18-6001Kit contains all of the components to re-seal leaking slave cylinder, Kit includes copper washer, seal, O-rings, gaskets, spring and screws
    9500760
    SKU:
    9500760
    Availability:
    Ships Same Business Day
    Weight:
    0.10 LBS
    RIDING STYLE:
    OFF-ROAD
    UNITS:
    KIT
    PRODUCT NAME:
    REBUILD KIT
    TYPE:
    SLAVE CYLINDER
    Add to Cart
    $36.95
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    $36.95
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  • MOOSE RACING Slave Cylinder Rebuild Kit 18-6003
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    MOOSE RACING Slave Cylinder Rebuild Kit 18-6003

    MOOSE RACING

    $34.95
    MOOSE RACING Slave Cylinder Rebuild Kit 18-6003Kit contains all of the components to re-seal leaking slave cylinder, Kit includes copper washer, seal, O-rings, gaskets, spring and screws
    9500762
    SKU:
    9500762
    Availability:
    Ships Same Business Day
    Weight:
    0.05 LBS
    PRODUCT NAME:
    REBUILD KIT
    TYPE:
    SLAVE CYLINDER
    RIDING STYLE:
    OFF-ROAD
    UNITS:
    KIT
    RIDING STYLE:
    STREET
    Add to Cart
    $34.95
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    $34.95
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  • MOOSE RACING Slave Cylinder Rebuild Kit 18-6012
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    MOOSE RACING Slave Cylinder Rebuild Kit 18-6012

    MOOSE RACING

    $72.95
    MOOSE RACING Slave Cylinder Rebuild Kit 18-6012Kit contains all of the components to re-seal leaking slave cylinder, Kit includes copper washer, seal, O-rings, gaskets, spring and screws
    9500897
    SKU:
    9500897
    Availability:
    Ships Same Business Day
    Weight:
    0.12 LBS
    RIDING STYLE:
    OFF-ROAD
    UNITS:
    KIT
    RIDING STYLE:
    STREET
    PRODUCT NAME:
    REBUILD KIT
    TYPE:
    SLAVE CYLINDER
    Add to Cart
    $72.95
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    Price:
    $72.95
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  • MOOSE RACING Slave Cylinder Rebuild Kit 18-6013
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    MOOSE RACING Slave Cylinder Rebuild Kit 18-6013

    MOOSE RACING

    $70.95
    MOOSE RACING Slave Cylinder Rebuild Kit 18-6013Kit contains all of the components to re-seal leaking slave cylinder, Kit includes copper washer, seal, O-rings, gaskets, spring and screws
    9500898
    SKU:
    9500898
    Availability:
    Ships Same Business Day
    Weight:
    0.15 LBS
    RIDING STYLE:
    OFF-ROAD
    UNITS:
    KIT
    PRODUCT NAME:
    REBUILD KIT
    TYPE:
    SLAVE CYLINDER
    RIDING STYLE:
    STREET
    Add to Cart
    $70.95
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    $70.95
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  • MOOSE RACING Slave Cylinder Rebuild Kit 18-6014
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    MOOSE RACING Slave Cylinder Rebuild Kit 18-6014

    MOOSE RACING

    $70.95
    MOOSE RACING Slave Cylinder Rebuild Kit 18-6014Kit contains all of the components to re-seal leaking slave cylinder, Kit includes copper washer, seal, O-rings, gaskets, spring and screws
    9500899
    SKU:
    9500899
    Availability:
    Ships Same Business Day
    Weight:
    0.15 LBS
    TYPE:
    SLAVE CYLINDER
    RIDING STYLE:
    OFF-ROAD
    UNITS:
    KIT
    PRODUCT NAME:
    REBUILD KIT
    RIDING STYLE:
    STREET
    Add to Cart
    $70.95
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    Price:
    $70.95
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  • MOOSE RACING Slave Cylinder Rebuild Kit 18-6015
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    MOOSE RACING Slave Cylinder Rebuild Kit 18-6015

    MOOSE RACING

    $72.95
    MOOSE RACING Slave Cylinder Rebuild Kit 18-6015Kit contains all of the components to re-seal leaking slave cylinder, Kit includes copper washer, seal, O-rings, gaskets, spring and screws
    9500900
    SKU:
    9500900
    Availability:
    Ships Same Business Day
    Weight:
    0.15 LBS
    RIDING STYLE:
    OFF-ROAD
    UNITS:
    KIT
    RIDING STYLE:
    STREET
    PRODUCT NAME:
    REBUILD KIT
    TYPE:
    SLAVE CYLINDER
    Add to Cart
    $72.95
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    Price:
    $72.95
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  • MOOSE RACING Slave Cylinder Rebuild Kit - KTM 18-6004
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    MOOSE RACING Slave Cylinder Rebuild Kit - KTM 18-6004

    MOOSE RACING

    $43.95
    MOOSE RACING Slave Cylinder Rebuild Kit KTM 18-6004Kit contains all of the components to re-seal leaking slave cylinder, Kit includes copper washer, seal, O-rings, gaskets, spring and screws
    9500763
    SKU:
    9500763
    Availability:
    Ships Same Business Day
    Weight:
    0.10 LBS
    TYPE:
    SLAVE CYLINDER
    RIDING STYLE:
    OFF-ROAD
    PRODUCT NAME:
    REBUILD KIT
    UNITS:
    KIT
    Add to Cart
    $43.95
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    $43.95
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  • MOOSE RACING Slave Cylinder Rebuild Kit - KTM 18-6005
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    MOOSE RACING Slave Cylinder Rebuild Kit - KTM 18-6005

    MOOSE RACING

    $41.95
    MOOSE RACING Slave Cylinder Rebuild Kit KTM 18-6005Kit contains all of the components to re-seal leaking slave cylinder, Kit includes copper washer, seal, O-rings, gaskets, spring and screws
    9500764
    SKU:
    9500764
    Availability:
    Ships Same Business Day
    Weight:
    0.05 LBS
    TYPE:
    SLAVE CYLINDER
    RIDING STYLE:
    OFF-ROAD
    UNITS:
    KIT
    PRODUCT NAME:
    REBUILD KIT
    Add to Cart
    $41.95
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    $41.95
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  • MOOSE RACING Slave Cylinder Rebuild Kit 18-6006
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    MOOSE RACING Slave Cylinder Rebuild Kit 18-6006

    MOOSE RACING

    $43.95
    MOOSE RACING Slave Cylinder Rebuild Kit 18-6006Kit contains all of the components to re-seal leaking slave cylinder, Kit includes copper washer, seal, O-rings, gaskets, spring and screws
    9500765
    SKU:
    9500765
    Availability:
    Ships Same Business Day
    Weight:
    0.05 LBS
    RIDING STYLE:
    OFF-ROAD
    UNITS:
    KIT
    PRODUCT NAME:
    REBUILD KIT
    TYPE:
    SLAVE CYLINDER
    Add to Cart
    $43.95
    Add to Cart Quick view
    Qty in Cart: 0
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    Price:
    $43.95
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  • MOOSE RACING Slave Cylinder Rebuild Kit - KTM 18-6008
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    MOOSE RACING Slave Cylinder Rebuild Kit - KTM 18-6008

    MOOSE RACING

    $43.95
    MOOSE RACING Slave Cylinder Rebuild Kit KTM 18-6008Kit contains all of the components to re-seal leaking slave cylinder, Kit includes copper washer, seal, O-rings, gaskets, spring and screws
    9500767
    SKU:
    9500767
    Availability:
    Ships Same Business Day
    Weight:
    0.15 LBS
    PRODUCT NAME:
    REBUILD KIT
    TYPE:
    SLAVE CYLINDER
    UNITS:
    KIT
    RIDING STYLE:
    OFF-ROAD
    Add to Cart
    $43.95
    Add to Cart Quick view
    Qty in Cart: 0
    Quantity:
    Price:
    $43.95
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  • MOOSE RACING Slave Cylinder Rebuild Kit 18-6009
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    MOOSE RACING Slave Cylinder Rebuild Kit 18-6009

    MOOSE RACING

    $43.95
    MOOSE RACING Slave Cylinder Rebuild Kit 18-6009Kit contains all of the components to re-seal leaking slave cylinder, Kit includes copper washer, seal, O-rings, gaskets, spring and screws
    9500768
    SKU:
    9500768
    Availability:
    Ships Same Business Day
    Weight:
    0.05 LBS
    TYPE:
    SLAVE CYLINDER
    PRODUCT NAME:
    REBUILD KIT
    RIDING STYLE:
    ADVENTURE TOURING / DUAL-SPORT
    RIDING STYLE:
    OFF-ROAD
    UNITS:
    KIT
    Add to Cart
    $43.95
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    $43.95
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  • VESRAH Complete Gasket Kit - KLT/KZ200 VG-440
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    VESRAH Complete Gasket Kit - KLT/KZ200 VG-440

    VESRAH

    $52.64
    Complete gasket sets include all necessary engine gaskets, o-rings and valve guide oil seals to rebuild a complete engine (do not include oil seals); sold each, Top-end gasket sets include all necessary top-end gaskets, o-rings and valve guide oil seals...
    VG440
    SKU:
    VG440
    Weight:
    0.31 LBS
    UNITS:
    SET
    PRODUCT NAME:
    GASKET
    RIDING STYLE:
    STREET
    TYPE:
    COMPLETE
    Ships from Manufacture | Call to Order (231) 767-5055
    $52.64
    Ships from Manufacture | Call to Order (231) 767-5055 Quick view
    Qty in Cart: 0
    Price:
    $52.64
    Subtotal:
    Ships from Manufacture | Call to Order (231) 767-5055
  • WSM Rotary Valve Gear 010-450
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    WSM Rotary Valve Gear 010-450

    WSM

    $42.25
    WSM Rotary Valve Gear 010-450Gear for Sea-Doo rotary valves
    10450
    SKU:
    10450
    Availability:
    Ships Same Business Day
    Weight:
    0.10 LBS
    UNITS:
    EACH
    PRODUCT NAME:
    GEAR
    RIDING STYLE:
    WATERCRAFT
    TYPE:
    ROTARY VALVE
    Add to Cart
    $42.25
    Add to Cart Quick view
    Qty in Cart: 0
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    Price:
    $42.25
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  • WSM Rotary Valve Spring 010-453
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    WSM Rotary Valve Spring 010-453

    WSM

    $2.95
    WSM Rotary Valve Spring 010-453Spring for Sea-Doo rotary valves
    10453
    SKU:
    10453
    Availability:
    Ships Same Business Day
    Weight:
    0.10 LBS
    TYPE:
    ROTARY VALVE
    MATERIAL:
    STEEL
    RIDING STYLE:
    WATERCRAFT
    PRODUCT NAME:
    SHAFT SPRING
    UNITS:
    EACH
    Add to Cart
    $2.95
    Add to Cart Quick view
    Qty in Cart: 0
    Quantity:
    Price:
    $2.95
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  • WSM Rotary Valve Shaft 010-455
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    WSM Rotary Valve Shaft 010-455

    WSM

    $81.18
    WSM Rotary Valve Shaft 010-455Rotary Valve Shaft for Sea-Doo models
    10455
    SKU:
    10455
    Availability:
    Ships Same Business Day
    Weight:
    0.40 LBS
    MATERIAL:
    STEEL
    PRODUCT NAME:
    SHAFT
    RIDING STYLE:
    WATERCRAFT
    TYPE:
    ROTARY VALVE
    UNITS:
    EACH
    Add to Cart
    $81.18
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    Qty in Cart: 0
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    Price:
    $81.18
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  • WSM Rotary Valve Shaft 010-457
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    WSM Rotary Valve Shaft 010-457

    WSM

    $81.18
    WSM Rotary Valve Shaft 010-457Rotary Valve Shaft for Sea-Doo models
    10457
    SKU:
    10457
    Availability:
    Ships Same Business Day
    Weight:
    0.50 LBS
    MATERIAL:
    STEEL
    UNITS:
    EACH
    RIDING STYLE:
    WATERCRAFT
    TYPE:
    ROTARY VALVE
    PRODUCT NAME:
    SHAFT
    Add to Cart
    $81.18
    Add to Cart Quick view
    Qty in Cart: 0
    Quantity:
    Price:
    $81.18
    Subtotal:
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  • WSM Piston Kit - Yamaha - Standard 010-802K
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    WSM Piston Kit - Yamaha - Standard 010-802K

    WSM

    $81.14
    WSM Piston Kit Yamaha Standard 010-802KQuality and construction that meets or exceeds OEM, Feature improved E-clip design, Contain piston, rings, pin and clips, Additional rings available separately, Order one per cylinder, Skirts have a nonabrasive,...
    10802
    SKU:
    10802
    Availability:
    Ships Same Business Day
    Weight:
    0.94 LBS
    BORE SIZE METRIC:
    77.00 MM
    PISTON MATERIAL:
    ALUMINUM
    UNITS:
    KIT
    PRODUCT NAME:
    PISTON KIT
    RIDING STYLE:
    WATERCRAFT
    BORE - OVERSIZE:
    STANDARD
    BORE - OVERSIZE METRIC:
    STANDARD
    MODEL:
    ORIGINAL
    Add to Cart
    $81.14
    Add to Cart Quick view
    Qty in Cart: 0
    Quantity:
    Price:
    $81.14
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  • WSM Piston Kit - Yamaha 650 - +.5 mm 010-802-05K
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    WSM Piston Kit - Yamaha 650 - +.5 mm 010-802-05K

    WSM

    $81.14
    WSM Piston Kit Yamaha 650 +.5 mm 010-802-05KQuality and construction that meets or exceeds OEM, Feature improved E-clip design, Contain piston, rings, pin and clips, Additional rings available separately, Order one per cylinder, Skirts have a...
    1080205
    SKU:
    1080205
    Availability:
    Ships Same Business Day
    Weight:
    0.95 LBS
    BORE SIZE METRIC:
    77.00 MM
    PRODUCT NAME:
    PISTON KIT
    BORE - OVERSIZE:
    +0,50 MM
    BORE - OVERSIZE METRIC:
    +0.50 MM
    PISTON MATERIAL:
    ALUMINUM
    RIDING STYLE:
    WATERCRAFT
    UNITS:
    KIT
    MODEL:
    ORIGINAL
    Add to Cart
    $81.14
    Add to Cart Quick view
    Qty in Cart: 0
    Quantity:
    Price:
    $81.14
    Subtotal:
    Add to Cart
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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!

Some parts are not legal for use in California or other states with similar laws / regulations