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
  • WISECO Engine Kit - KX60 - 1985-2003 PWR130-100

    WISECO Engine Kit - KX60 - 1985-2003 PWR130-100

    WISECO

    $459.95
    WISECO Engine Kit KX60 1985-2003 PWR130-100Includes all top and bottom-end components for a complete engine rebuild, Crankshaft and rod assembly designed and inspected to assure durability, Kit includes main bearings, seals, gaskets, an hour meter and...
    09031512
    SKU:
    09031512
    Availability:
    Ships Same Business Day
    Weight:
    14.83 LBS
    PRODUCT NAME:
    REBUILD KIT
    TYPE:
    ENGINE
    DISPLACEMENT:
    60 CC
    ENGINE TYPE:
    2-STROKE
    UNITS:
    KIT
    BORE SIZE METRIC:
    43.00 MM
    FEATURES:
    STANDARD PISTON
    MODEL:
    GARAGE BUDDY
    OVERBORE METRIC:
    STANDARD
    RIDING STYLE:
    OFF-ROAD
    $459.95
    Qty in Cart: 0
    Quantity:
    Price:
    $459.95
    Subtotal:
  • WISECO Engine Kit - RM125 - 2004-2010 PWR135-100

    WISECO Engine Kit - RM125 - 2004-2010 PWR135-100

    WISECO

    $564.95
    WISECO Engine Kit RM125 2004-2010 PWR135-100Includes all top and bottom-end components for a complete engine rebuild, Crankshaft and rod assembly designed and inspected to assure durability, Kit includes main bearings, seals, gaskets, an hour meter and...
    09031520
    SKU:
    09031520
    Availability:
    Ships Same Business Day
    Weight:
    10.00 LBS
    DISPLACEMENT:
    125 CC
    PRODUCT NAME:
    REBUILD KIT
    TYPE:
    ENGINE
    ENGINE TYPE:
    2-STROKE
    BORE SIZE METRIC:
    54.00 MM
    UNITS:
    KIT
    FEATURES:
    PROLITE® PISTON
    MODEL:
    GARAGE BUDDY
    OVERBORE METRIC:
    STANDARD
    RIDING STYLE:
    OFF-ROAD
    Qty in Cart: 0
    Quantity:
    Price:
    $564.95
    Subtotal:
  • WISECO Engine Kit - CRF450 - 2002-2006 PWR138-100

    WISECO Engine Kit - CRF450 - 2002-2006 PWR138-100

    WISECO

    $974.95
    WISECO Engine Kit CRF450 2002-2006 PWR138-100Includes all top and bottom-end components for a complete engine rebuild, Crankshaft and rod assembly designed and inspected to assure durability, Kit includes main bearings, seals, gaskets, an hour meter and...
    09031524
    SKU:
    09031524
    Availability:
    Ships Same Business Day
    Weight:
    15.40 LBS
    $974.95
    Qty in Cart: 0
    Quantity:
    Price:
    $974.95
    Subtotal:
  • WISECO Engine Kit - CRF450 - 2007 PWR138-101

    WISECO Engine Kit - CRF450 - 2007 PWR138-101

    WISECO

    $974.95
    WISECO Engine Kit CRF450 2007 PWR138-101Includes all top and bottom-end components for a complete engine rebuild, Crankshaft and rod assembly designed and inspected to assure durability, Kit includes main bearings, seals, gaskets, an hour meter and...
    09031525
    SKU:
    09031525
    Availability:
    Ships Same Business Day
    Weight:
    15.05 LBS
    $974.95
    Qty in Cart: 0
    Quantity:
    Price:
    $974.95
    Subtotal:
  • WISECO Engine Kit - YZ450 - 2003-2005 PWR139-100

    WISECO Engine Kit - YZ450 - 2003-2005 PWR139-100

    WISECO

    $969.95
    WISECO Engine Kit YZ450 2003-2005 PWR139-100Includes all top and bottom-end components for a complete engine rebuild, Crankshaft and rod assembly designed and inspected to assure durability, Kit includes main bearings, seals, gaskets, an hour meter and...
    09031526
    SKU:
    09031526
    Availability:
    Ships Same Business Day
    Weight:
    13.80 LBS
    $969.95
    Qty in Cart: 0
    Quantity:
    Price:
    $969.95
    Subtotal:
  • WISECO Engine Kit - YZ250F - 2003-2004 PWR140-100

    WISECO Engine Kit - YZ250F - 2003-2004 PWR140-100

    WISECO

    $889.98
    WISECO Engine Kit YZ250F 2003-2004 PWR140-100Includes all top and bottom-end components for a complete engine rebuild, Crankshaft and rod assembly designed and inspected to assure durability, Kit includes main bearings, seals, gaskets, an hour meter and...
    09031527
    SKU:
    09031527
    Availability:
    Ships Same Business Day
    Weight:
    11.25 LBS
    $889.98
    Qty in Cart: 0
    Quantity:
    Price:
    $889.98
    Subtotal:
  • WISECO Engine Kit - YZ250F - 2005-2007 PWR140-101

    WISECO Engine Kit - YZ250F - 2005-2007 PWR140-101

    WISECO

    $889.98
    WISECO Engine Kit YZ250F 2005-2007 PWR140-101Includes all top and bottom-end components for a complete engine rebuild, Crankshaft and rod assembly designed and inspected to assure durability, Kit includes main bearings, seals, gaskets, an hour meter and...
    09031528
    SKU:
    09031528
    Availability:
    Ships Same Business Day
    Weight:
    11.35 LBS
    $889.98
    Qty in Cart: 0
    Quantity:
    Price:
    $889.98
    Subtotal:
  • WISECO Engine Kit - YZ250F - 2008-2011 PWR140-102

    WISECO Engine Kit - YZ250F - 2008-2011 PWR140-102

    WISECO

    $894.95
    WISECO Engine Kit YZ250F 2008-2011 PWR140-102Includes all top and bottom-end components for a complete engine rebuild, Crankshaft and rod assembly designed and inspected to assure durability, Kit includes main bearings, seals, gaskets, an hour meter and...
    09031529
    SKU:
    09031529
    Availability:
    Ships Same Business Day
    Weight:
    11.30 LBS
    $894.95
    Qty in Cart: 0
    Quantity:
    Price:
    $894.95
    Subtotal:
  • WISECO Engine Kit - CRF250 - 2004-2007 PWR143-100

    WISECO Engine Kit - CRF250 - 2004-2007 PWR143-100

    WISECO

    $889.95
    WISECO Engine Kit CRF250 2004-2007 PWR143-100Includes all top and bottom-end components for a complete engine rebuild, Crankshaft and rod assembly designed and inspected to assure durability, Kit includes main bearings, seals, gaskets, an hour meter and...
    09031531
    SKU:
    09031531
    Availability:
    Ships Same Business Day
    Weight:
    5.05 LBS
    Qty in Cart: 0
    Quantity:
    Price:
    $889.95
    Subtotal:
  • WISECO Engine Kit - KX250F - 2006 PWR144-101

    WISECO Engine Kit - KX250F - 2006 PWR144-101

    WISECO

    $884.95
    WISECO Engine Kit KX250F 2006 PWR144-101Includes all top and bottom-end components for a complete engine rebuild, Crankshaft and rod assembly designed and inspected to assure durability, Kit includes main bearings, seals, gaskets, an hour meter and...
    09031532
    SKU:
    09031532
    Availability:
    Ships Same Business Day
    Weight:
    11.30 LBS
    $884.95
    Qty in Cart: 0
    Quantity:
    Price:
    $884.95
    Subtotal:
  • WISECO Engine Kit - KX250F - 2007-2008 PWR144-102

    WISECO Engine Kit - KX250F - 2007-2008 PWR144-102

    WISECO

    $894.95
    WISECO Engine Kit KX250F 2007-2008 PWR144-102Includes all top and bottom-end components for a complete engine rebuild, Crankshaft and rod assembly designed and inspected to assure durability, Kit includes main bearings, seals, gaskets, an hour meter and...
    09031533
    SKU:
    09031533
    Availability:
    Ships Same Business Day
    Weight:
    11.25 LBS
    Qty in Cart: 0
    Quantity:
    Price:
    $894.95
    Subtotal:
  • WISECO Engine Kit - YZ450F - 2006-2009 PWR151-100

    WISECO Engine Kit - YZ450F - 2006-2009 PWR151-100

    WISECO

    $994.95
    WISECO Engine Kit YZ450F 2006-2009 PWR151-100Includes all top and bottom-end components for a complete engine rebuild, Crankshaft and rod assembly designed and inspected to assure durability, Kit includes main bearings, seals, gaskets, an hour meter and...
    09031535
    SKU:
    09031535
    Availability:
    Ships Same Business Day
    Weight:
    14.00 LBS
    $994.95
    Qty in Cart: 0
    Quantity:
    Price:
    $994.95
    Subtotal:
  • WISECO Engine Kit - KTM/TC125 - 2007-2015 PWR153-102

    WISECO Engine Kit - KTM/TC125 - 2007-2015 PWR153-102

    WISECO

    $664.95
    WISECO Engine Kit KTM/TC125 2007-2015 PWR153-102Includes all top and bottom-end components for a complete engine rebuild, Crankshaft and rod assembly designed and inspected to assure durability, Kit includes main bearings, seals, gaskets, an hour meter...
    09031536
    SKU:
    09031536
    Availability:
    Ships Same Business Day
    Weight:
    10.65 LBS
    DISPLACEMENT:
    125 CC
    FEATURES:
    PROLITE® PISTON
    TYPE:
    ENGINE
    BORE SIZE METRIC:
    54.00 MM
    OVERBORE METRIC:
    STANDARD
    PRODUCT NAME:
    REBUILD KIT
    ENGINE TYPE:
    2-STROKE
    MODEL:
    GARAGE BUDDY
    RIDING STYLE:
    OFF-ROAD
    UNITS:
    KIT
    Qty in Cart: 0
    Quantity:
    Price:
    $664.95
    Subtotal:
  • WISECO Engine Kit - CRF250 - 2008-2009 PWR159-100

    WISECO Engine Kit - CRF250 - 2008-2009 PWR159-100

    WISECO

    $879.95
    WISECO Engine Kit CRF250 2008-2009 PWR159-100Includes all top and bottom-end components for a complete engine rebuild, Crankshaft and rod assembly designed and inspected to assure durability, Kit includes main bearings, seals, gaskets, an hour meter and...
    09031537
    SKU:
    09031537
    Availability:
    Ships Same Business Day
    Weight:
    11.25 LBS
    Qty in Cart: 0
    Quantity:
    Price:
    $879.95
    Subtotal:
  • WISECO Engine Rebuild Kit PWR213-100

    WISECO Engine Rebuild Kit PWR213-100

    WISECO

    $884.95
    WISECO Engine Rebuild Kit PWR213-100Includes all top and bottom-end components for a complete engine rebuild, 4-stroke kits include a premium forged piston kit with stock compression ratio and a high-quality cam chain, 2-stroke kits include a Pro-Lite®...
    09031672
    SKU:
    09031672
    Availability:
    Ships Same Business Day
    Weight:
    8.75 LBS
    BORE SIZE METRIC:
    54.00 MM
    PRODUCT NAME:
    REBUILD KIT
    TYPE:
    ENGINE
    RIDING STYLE:
    OFF-ROAD
    UNITS:
    KIT
    $884.95
    Qty in Cart: 0
    Quantity:
    Price:
    $884.95
    Subtotal:
  • WISECO Valve Kit SVKB1336

    WISECO Valve Kit SVKB1336

    WISECO

    $344.95
    WISECO Valve Kit SVKB1336Complete package with valves and springs for intake and exhaust, Matched steel valves and springs provide an engineered solution to your engine, OEM-quality valves manufactured by leading OEM suppliers, Precision valve springs...
    09263058
    SKU:
    09263058
    Availability:
    Ships Same Business Day
    Weight:
    1.00 LBS
    UNITS:
    KIT
    APPLICATION:
    EXHAUST
    APPLICATION:
    INTAKE
    MATERIAL:
    STEEL
    PRODUCT NAME:
    VALVE KIT
    RIDING STYLE:
    OFF-ROAD
    $344.95
    Qty in Cart: 0
    Quantity:
    Price:
    $344.95
    Subtotal:
  • WISECO Valve Kit SVKB1337

    WISECO Valve Kit SVKB1337

    WISECO

    $344.95
    WISECO Valve Kit SVKB1337Complete package with valves and springs for intake and exhaust, Matched steel valves and springs provide an engineered solution to your engine, OEM-quality valves manufactured by leading OEM suppliers, Precision valve springs...
    09263059
    SKU:
    09263059
    Availability:
    Ships Same Business Day
    Weight:
    1.00 LBS
    APPLICATION:
    EXHAUST
    MATERIAL:
    STEEL
    PRODUCT NAME:
    VALVE KIT
    RIDING STYLE:
    OFF-ROAD
    UNITS:
    KIT
    APPLICATION:
    INTAKE
    $344.95
    Qty in Cart: 0
    Quantity:
    Price:
    $344.95
    Subtotal:
  • WISECO Valve Kit SVKB1340

    WISECO Valve Kit SVKB1340

    WISECO

    $344.95
    WISECO Valve Kit SVKB1340Complete package with valves and springs for intake and exhaust, Matched steel valves and springs provide an engineered solution to your engine, OEM-quality valves manufactured by leading OEM suppliers, Precision valve springs...
    09263060
    SKU:
    09263060
    Availability:
    Ships Same Business Day
    Weight:
    1.00 LBS
    MATERIAL:
    STEEL
    PRODUCT NAME:
    VALVE KIT
    RIDING STYLE:
    OFF-ROAD
    UNITS:
    KIT
    APPLICATION:
    EXHAUST
    APPLICATION:
    INTAKE
    $344.95
    Qty in Cart: 0
    Quantity:
    Price:
    $344.95
    Subtotal:
  • WISECO Valve Kit SVKB1403

    WISECO Valve Kit SVKB1403

    WISECO

    $344.95
    WISECO Valve Kit SVKB1403Complete package with valves and springs for intake and exhaust, Matched steel valves and springs provide an engineered solution to your engine, OEM-quality valves manufactured by leading OEM suppliers, Precision valve springs...
    09263061
    SKU:
    09263061
    Availability:
    Ships Same Business Day
    Weight:
    1.15 LBS
    APPLICATION:
    EXHAUST
    APPLICATION:
    INTAKE
    MATERIAL:
    STEEL
    PRODUCT NAME:
    VALVE KIT
    RIDING STYLE:
    OFF-ROAD
    UNITS:
    KIT
    $344.95
    Qty in Cart: 0
    Quantity:
    Price:
    $344.95
    Subtotal:
  • WISECO Valve Kit SVKB1404

    WISECO Valve Kit SVKB1404

    WISECO

    $344.95
    WISECO Valve Kit SVKB1404Complete package with valves and springs for intake and exhaust, Matched steel valves and springs provide an engineered solution to your engine, OEM-quality valves manufactured by leading OEM suppliers, Precision valve springs...
    09263062
    SKU:
    09263062
    Availability:
    Ships Same Business Day
    Weight:
    1.15 LBS
    UNITS:
    KIT
    APPLICATION:
    EXHAUST
    MATERIAL:
    STEEL
    PRODUCT NAME:
    VALVE KIT
    RIDING STYLE:
    OFF-ROAD
    APPLICATION:
    INTAKE
    $344.95
    Qty in Cart: 0
    Quantity:
    Price:
    $344.95
    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!