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 Ring Set 2953XC

    WISECO Ring Set 2953XC

    WISECO

    $49.95
    WISECO Ring Set 2953XCEach ring set is for one piston
    2953XC
    SKU:
    2953XC
    Availability:
    Ships Same Business Day
    Weight:
    0.05 LBS
    DISPLACEMENT:
    282 CC
    PISTON MATERIAL:
    ALUMINUM
    PRODUCT NAME:
    PISTON RING
    RIDING STYLE:
    ATV
    RIDING STYLE:
    OFF-ROAD
    BORE SIZE METRIC:
    75.00 MM
    DISPLACEMENT:
    246 CC
    UNITS:
    SET
    $49.95
    Qty in Cart: 0
    Quantity:
    Price:
    $49.95
    Subtotal:
  • WISECO Ring Set 2953XG

    WISECO Ring Set 2953XG

    WISECO

    $49.95
    WISECO Ring Set 2953XGEach ring set is for one piston
    2953XG
    SKU:
    2953XG
    Availability:
    Ships Same Business Day
    Weight:
    0.02 LBS
    DISPLACEMENT:
    250 CC
    BORE SIZE METRIC:
    75.00 MM
    PRODUCT NAME:
    PISTON RING
    RIDING STYLE:
    STREET
    UNITS:
    SET
    PISTON MATERIAL:
    ALUMINUM
    RIDING STYLE:
    OFF-ROAD
    $49.95
    Qty in Cart: 0
    Quantity:
    Price:
    $49.95
    Subtotal:
  • WISECO Piston Kit - KX250 - 2002-2004 799M06750

    WISECO Piston Kit - KX250 - 2002-2004 799M06750

    WISECO

    $184.95
    WISECO Piston Kit KX250 2002-2004 799M06750Pistons come without gasket kit
    09101242
    SKU:
    09101242
    Availability:
    Ships Same Business Day
    Weight:
    0.50 LBS
    STROKE LENGTH METRIC:
    72.00 MM
    BORE SIZE METRIC:
    67.50 MM
    ENGINE TYPE:
    2-STROKE
    BORE - OVERSIZE:
    +1,10 MM
    PISTON MATERIAL:
    FORGED
    PRODUCT NAME:
    PISTON
    RIDING STYLE:
    OFF-ROAD
    BORE - OVERSIZE METRIC:
    +1.10 MM
    DISPLACEMENT:
    249,3 CC
    PISTON MATERIAL:
    ALUMINUM ALLOY
    UNITS:
    EACH
    $184.95
    Qty in Cart: 0
    Quantity:
    Price:
    $184.95
    Subtotal:
  • WISECO Piston Kit - CR250 - 2002-2004 801M06750

    WISECO Piston Kit - CR250 - 2002-2004 801M06750

    WISECO

    $184.95
    WISECO Piston Kit CR250 2002-2004 801M06750Pistons come without gasket kit
    09101243
    SKU:
    09101243
    Availability:
    Ships Same Business Day
    Weight:
    0.75 LBS
    PISTON MATERIAL:
    FORGED
    BORE - OVERSIZE METRIC:
    +1.10 MM
    PISTON MATERIAL:
    ALUMINUM
    DISPLACEMENT:
    249 CC
    ENGINE TYPE:
    2-STROKE
    STROKE LENGTH METRIC:
    72.00 MM
    PRODUCT NAME:
    PISTON KIT
    BORE - OVERSIZE:
    +1,10 MM
    BORE SIZE METRIC:
    67.50 MM
    RIDING STYLE:
    OFF-ROAD
    UNITS:
    EACH
    $184.95
    Qty in Cart: 0
    Quantity:
    Price:
    $184.95
    Subtotal:
  • WISECO Piston Kit - YZ 250/X 804M06700

    WISECO Piston Kit - YZ 250/X 804M06700

    WISECO

    $184.95
    WISECO Piston Kit YZ 250/X 804M06700Pistons come without gasket kit
    09101244
    SKU:
    09101244
    Availability:
    Ships Same Business Day
    Weight:
    0.70 LBS
    BORE SIZE METRIC:
    67.00 MM
    STROKE LENGTH METRIC:
    72.00 MM
    PISTON MATERIAL:
    FORGED
    RIDING STYLE:
    OFF-ROAD
    BORE - OVERSIZE METRIC:
    +0.60 MM
    DISPLACEMENT:
    249 CC
    ENGINE TYPE:
    2-STROKE
    MODEL:
    PRO-LITE
    UNITS:
    EACH
    BORE - OVERSIZE:
    +0,60 MM
    PISTON MATERIAL:
    ALUMINUM ALLOY
    PRODUCT NAME:
    PISTON
    SKIRT COATING:
    ARMORGLIDE®
    $184.95
    Qty in Cart: 0
    Quantity:
    Price:
    $184.95
    Subtotal:
  • WISECO Piston Kit - YZ 250/X 804M06750

    WISECO Piston Kit - YZ 250/X 804M06750

    WISECO

    $184.95
    WISECO Piston Kit YZ 250/X 804M06750Pistons come without gasket kit
    09101245
    SKU:
    09101245
    Availability:
    Ships Same Business Day
    Weight:
    0.80 LBS
    STROKE LENGTH METRIC:
    72.00 MM
    BORE SIZE METRIC:
    67.50 MM
    DISPLACEMENT:
    249 CC
    ENGINE TYPE:
    2-STROKE
    MODEL:
    PRO-LITE
    BORE - OVERSIZE:
    +1,10 MM
    PISTON MATERIAL:
    FORGED
    PRODUCT NAME:
    PISTON
    RIDING STYLE:
    OFF-ROAD
    SKIRT COATING:
    ARMORGLIDE®
    BORE - OVERSIZE METRIC:
    +1.10 MM
    PISTON MATERIAL:
    ALUMINUM ALLOY
    UNITS:
    EACH
    $184.95
    Qty in Cart: 0
    Quantity:
    Price:
    $184.95
    Subtotal:
  • WISECO Piston Kit - Jet Ski - Standard WK1026

    WISECO Piston Kit - Jet Ski - Standard WK1026

    WISECO

    $179.95
    Most Wiseco 2-cycle pistons are forged from high-silicone bar stock, Greater strength and lower expansion at high temperatures, Complete piston kits include High-Performance forged pistons, rings, wrist pins, circlips and top-end gasket kit for one...
    WK1026
    SKU:
    WK1026
    Weight:
    1.40 LBS
    RIDING STYLE:
    WATERCRAFT
    UNITS:
    KIT
    BORE SIZE METRIC:
    76.00 MM
    PRODUCT NAME:
    REBUILD KIT
    TYPE:
    TOP END
    MODEL:
    FORGED SERIES
    SKIRT COATING:
    NON-COATED
    BORE - OVERSIZE:
    STANDARD
    BORE - OVERSIZE METRIC:
    STANDARD
    DISPLACEMENT:
    295 CC
    ENGINE TYPE:
    2-STROKE
    PISTON DIAMETER METRIC:
    75.90 MM
    PISTON MATERIAL:
    4032 ALUMINUM ALLOY
    $179.95
    Qty in Cart: 0
    Quantity:
    Price:
    $179.95
    Subtotal:
  • WISECO Piston Kit  - Kawasaki WK1061

    WISECO Piston Kit - Kawasaki WK1061

    WISECO

    $389.95
    Most Wiseco 2-cycle pistons are forged from high-silicone bar stock, Greater strength and lower expansion at high temperatures, Complete piston kits include High-Performance forged pistons, rings, wrist pins, circlips and top-end gasket kit for one...
    WK1061
    SKU:
    WK1061
    Weight:
    2.94 LBS
    DISPLACEMENT:
    760 CC
    MODEL:
    FORGED SERIES
    SKIRT COATING:
    NON-COATED
    TYPE:
    TOP END
    UNITS:
    KIT
    BORE - OVERSIZE METRIC:
    +1.00 MM
    ENGINE TYPE:
    2-STROKE
    PISTON DIAMETER METRIC:
    80.89 MM
    BORE - OVERSIZE:
    +1,00 MM
    PISTON MATERIAL:
    4032 ALUMINUM ALLOY
    RIDING STYLE:
    WATERCRAFT
    BORE SIZE METRIC:
    81.00 MM
    PRODUCT NAME:
    REBUILD KIT
    Qty in Cart: 0
    Quantity:
    Price:
    $389.95
    Subtotal:
  • WISECO Piston Kit - Standard - 144/150SX 869M05600

    WISECO Piston Kit - Standard - 144/150SX 869M05600

    WISECO

    $184.95
    WISECO Piston Kit Standard 144/150SX 869M05600Pistons come without gasket kit
    09102883
    SKU:
    09102883
    Availability:
    Ships Same Business Day
    Weight:
    0.25 LBS
    ENGINE TYPE:
    2-STROKE
    RIDING STYLE:
    OFF-ROAD
    BORE - OVERSIZE:
    STANDARD
    BORE - OVERSIZE METRIC:
    STANDARD
    BORE SIZE METRIC:
    56.00 MM
    DISPLACEMENT:
    144 CC
    PISTON MATERIAL:
    ALUMINUM ALLOY
    PISTON MATERIAL:
    FORGED
    PRODUCT NAME:
    PISTON
    UNITS:
    EACH
    STROKE LENGTH METRIC:
    58.50 MM
    Qty in Cart: 0
    Quantity:
    Price:
    $184.95
    Subtotal:
  • WISECO Piston Kit - Standard - YZ450F 40001M09700

    WISECO Piston Kit - Standard - YZ450F 40001M09700

    WISECO

    $239.95
    WISECO Piston Kit Standard YZ450F 40001M09700Pistons come without gasket kit
    09102884
    SKU:
    09102884
    Availability:
    Ships Same Business Day
    Weight:
    1.05 LBS
    STROKE LENGTH METRIC:
    60.80 MM
    BORE - OVERSIZE:
    STANDARD
    BORE - OVERSIZE METRIC:
    STANDARD
    COMPRESSION RATIO IMPERIAL:
    12.5:1
    ENGINE TYPE:
    4-STROKE
    PISTON MATERIAL:
    ALUMINUM ALLOY
    PRODUCT NAME:
    PISTON
    UNITS:
    EACH
    RIDING STYLE:
    OFF-ROAD
    BORE SIZE METRIC:
    97.00 MM
    DISPLACEMENT:
    449 CC
    PISTON MATERIAL:
    FORGED
    $239.95
    Qty in Cart: 0
    Quantity:
    Price:
    $239.95
    Subtotal:
  • WISECO Piston Kit - Standard - YZ450F 40002M09700

    WISECO Piston Kit - Standard - YZ450F 40002M09700

    WISECO

    $269.95
    WISECO Piston Kit Standard YZ450F 40002M09700Pistons come without gasket kit
    09102885
    SKU:
    09102885
    Availability:
    Ships Same Business Day
    Weight:
    0.75 LBS
    STROKE LENGTH METRIC:
    60.80 MM
    DISPLACEMENT:
    449 CC
    RIDING STYLE:
    OFF-ROAD
    BORE - OVERSIZE:
    STANDARD
    BORE - OVERSIZE METRIC:
    STANDARD
    COMPRESSION RATIO IMPERIAL:
    13.5:1
    ENGINE TYPE:
    4-STROKE
    BORE SIZE METRIC:
    97.00 MM
    PISTON MATERIAL:
    ALUMINUM ALLOY
    PISTON MATERIAL:
    FORGED
    PRODUCT NAME:
    PISTON
    UNITS:
    EACH
    $269.95
    Qty in Cart: 0
    Quantity:
    Price:
    $269.95
    Subtotal:
  • WISECO Piston Kit - Standard - CRF250R 40003M07680

    WISECO Piston Kit - Standard - CRF250R 40003M07680

    WISECO

    $189.95
    WISECO Piston Kit Standard CRF250R 40003M07680Pistons come without gasket kit
    09102886
    SKU:
    09102886
    Availability:
    Ships Same Business Day
    Weight:
    0.54 LBS
    BORE SIZE METRIC:
    76.80 MM
    BORE - OVERSIZE:
    STANDARD
    RIDING STYLE:
    OFF-ROAD
    STROKE LENGTH METRIC:
    53.80 MM
    BORE - OVERSIZE METRIC:
    STANDARD
    DISPLACEMENT:
    249 CC
    ENGINE TYPE:
    4-STROKE
    PISTON MATERIAL:
    ALUMINUM ALLOY
    PISTON MATERIAL:
    FORGED
    PRODUCT NAME:
    PISTON
    UNITS:
    EACH
    $189.95
    Qty in Cart: 0
    Quantity:
    Price:
    $189.95
    Subtotal:
  • WISECO Piston Kit - Standard - RM-Z 250 40012M07700

    WISECO Piston Kit - Standard - RM-Z 250 40012M07700

    WISECO

    $264.95
    WISECO Piston Kit Standard RM-Z 250 40012M07700Pistons come without gasket kit
    09102892
    SKU:
    09102892
    Availability:
    Ships Same Business Day
    Weight:
    0.58 LBS
    ENGINE TYPE:
    4-STROKE
    PISTON MATERIAL:
    ALUMINUM ALLOY
    PISTON MATERIAL:
    FORGED
    PRODUCT NAME:
    PISTON
    UNITS:
    EACH
    BORE - OVERSIZE:
    STANDARD
    BORE - OVERSIZE METRIC:
    STANDARD
    COMPRESSION RATIO IMPERIAL:
    13.9:1
    DISPLACEMENT:
    250 CC
    RIDING STYLE:
    OFF-ROAD
    BORE SIZE METRIC:
    77.00 MM
    STROKE LENGTH METRIC:
    53.60 MM
    $264.95
    Qty in Cart: 0
    Quantity:
    Price:
    $264.95
    Subtotal:
  • WISECO Piston Kit - Standard 40015M08800

    WISECO Piston Kit - Standard 40015M08800

    WISECO

    $279.95
    WISECO Piston Kit Standard 40015M08800Pistons come without gasket kit
    09102894
    SKU:
    09102894
    Availability:
    Ships Same Business Day
    Weight:
    0.80 LBS
    RIDING STYLE:
    OFF-ROAD
    BORE - OVERSIZE:
    STANDARD
    BORE - OVERSIZE METRIC:
    STANDARD
    ENGINE TYPE:
    4-STROKE
    PISTON MATERIAL:
    ALUMINUM ALLOY
    PRODUCT NAME:
    PISTON
    STROKE LENGTH METRIC:
    57.50 MM
    UNITS:
    EACH
    BORE SIZE METRIC:
    88.00 MM
    COMPRESSION RATIO IMPERIAL:
    14.5:1
    DISPLACEMENT:
    250 CC
    PISTON MATERIAL:
    FORGED
    $279.95
    Qty in Cart: 0
    Quantity:
    Price:
    $279.95
    Subtotal:
  • WISECO Piston - Yamaha - 1.50mm 394M08650

    WISECO Piston - Yamaha - 1.50mm 394M08650

    WISECO

    $224.95
    WISECO Piston Yamaha 1.50mm 394M08650Forged from high-silicon alloy for maximum strength and dependability, Wiseco offers a complete range of popular piston models and years for both trail and racing applications, All Wiseco pistons are priced with rings...
    394M08650
    SKU:
    394M08650
    Availability:
    Ships Same Business Day
    Weight:
    0.95 LBS
    DISPLACEMENT:
    397 CC
    PISTON MATERIAL:
    4032 ALUMINUM ALLOY
    BORE SIZE METRIC:
    86.50 MM
    ENGINE TYPE:
    2-STROKE
    MODEL:
    FORGED SERIES
    PISTON DIAMETER METRIC:
    86.42 MM
    PRODUCT NAME:
    PISTON KIT
    SKIRT COATING:
    NON-COATED
    STROKE LENGTH METRIC:
    70.00 MM
    BORE - OVERSIZE:
    +1,50 MM
    BORE - OVERSIZE METRIC:
    +1.50 MM
    RIDING STYLE:
    OFF-ROAD
    UNITS:
    KIT
    $224.95
    Qty in Cart: 0
    Quantity:
    Price:
    $224.95
    Subtotal:
  • WISECO Piston Kit 40110M09600

    WISECO Piston Kit 40110M09600

    WISECO

    $269.95
    WISECO Piston Kit 40110M09600Pistons come without gasket kit
    09103928
    SKU:
    09103928
    Availability:
    Ships Same Business Day
    Weight:
    0.90 LBS
    DISPLACEMENT:
    449 CC
    RIDING STYLE:
    OFF-ROAD
    BORE - OVERSIZE:
    STANDARD
    BORE SIZE METRIC:
    96.00 MM
    STROKE LENGTH METRIC:
    62.10 MM
    BORE - OVERSIZE METRIC:
    STANDARD
    COMPRESSION RATIO IMPERIAL:
    13.0:1
    ENGINE TYPE:
    4-STROKE
    PISTON MATERIAL:
    ALUMINUM ALLOY
    PISTON MATERIAL:
    FORGED
    PRODUCT NAME:
    PISTON
    UNITS:
    EACH
    $269.95
    Qty in Cart: 0
    Quantity:
    Price:
    $269.95
    Subtotal:
  • WISECO Piston 4715M10000

    WISECO Piston 4715M10000

    WISECO

    $239.95
    WISECO Piston 4715M10000Forged from high-silicon alloy for maximum strength and dependability, Wiseco offers a complete range of popular piston models and years for both trail and racing applications, All Wiseco pistons are priced with rings and circlips
    4715M10000
    SKU:
    4715M10000
    Availability:
    Ships Same Business Day
    Weight:
    0.85 LBS
    BORE SIZE METRIC:
    100.00 MM
    COMPRESSION RATIO IMPERIAL:
    10.0:1
    RIDING STYLE:
    OFF-ROAD
    STROKE LENGTH METRIC:
    82.60 MM
    BORE - OVERSIZE:
    STANDARD
    BORE - OVERSIZE METRIC:
    STANDARD
    DISPLACEMENT:
    644 CC
    PISTON MATERIAL:
    FORGED 2618 ALUMINUM
    PISTON DIAMETER METRIC:
    99.95 MM
    PRODUCT NAME:
    PISTON KIT
    SKIRT COATING:
    NON-COATED
    UNITS:
    KIT
    ENGINE TYPE:
    4-STROKE
    MODEL:
    FORGED SERIES
    $239.95
    Qty in Cart: 0
    Quantity:
    Price:
    $239.95
    Subtotal:
  • WISECO Piston 471M06650

    WISECO Piston 471M06650

    WISECO

    $201.95
    WISECO Piston 471M06650Forged from high-silicon alloy for maximum strength and dependability, Wiseco offers a complete range of popular piston models and years for both trail and racing applications, All Wiseco pistons are priced with rings and circlips
    471M06650
    SKU:
    471M06650
    Availability:
    Ships Same Business Day
    Weight:
    0.65 LBS
    MODEL:
    FORGED SERIES
    RIDING STYLE:
    ADVENTURE TOURING / DUAL-SPORT
    SKIRT COATING:
    NON-COATED
    UNITS:
    KIT
    BORE - OVERSIZE:
    +0,50 MM
    ENGINE TYPE:
    2-STROKE
    PISTON DIAMETER METRIC:
    66.45 MM
    PISTON MATERIAL:
    4032 ALUMINUM ALLOY
    RIDING STYLE:
    ATV
    RIDING STYLE:
    OFF-ROAD
    PRODUCT NAME:
    PISTON KIT
    BORE - OVERSIZE METRIC:
    +0.50 MM
    BORE SIZE METRIC:
    66.50 MM
    DISPLACEMENT:
    172 CC
    STROKE LENGTH METRIC:
    50.00 MM
    Qty in Cart: 0
    Quantity:
    Price:
    $201.95
    Subtotal:
  • WISECO Piston Kit - Kawasaki 40125M09603

    WISECO Piston Kit - Kawasaki 40125M09603

    WISECO

    $239.95
    WISECO Piston Kit Kawasaki 40125M09603Pistons come without gasket kit
    09103942
    SKU:
    09103942
    Availability:
    Ships Same Business Day
    Weight:
    0.95 LBS
    COMPRESSION RATIO IMPERIAL:
    13.5:1
    ENGINE TYPE:
    4-STROKE
    PISTON MATERIAL:
    ALUMINUM ALLOY
    PISTON MATERIAL:
    FORGED
    PRODUCT NAME:
    PISTON
    STROKE LENGTH METRIC:
    62.30 MM
    UNITS:
    EACH
    DISPLACEMENT:
    451 CC
    RIDING STYLE:
    OFF-ROAD
    BORE - OVERSIZE:
    STANDARD
    BORE - OVERSIZE METRIC:
    STANDARD
    BORE SIZE METRIC:
    96.00 MM
    $239.95
    Qty in Cart: 0
    Quantity:
    Price:
    $239.95
    Subtotal:
  • WOSSNER Piston Kit 8059DC

    WOSSNER Piston Kit 8059DC

    WOSSNER

    $150.96
    WOSSNER Piston Kit 8059DC2-stoke pistons include piston, rings, pin and clips, Piston made with high quality, permanent skirt coating to reduce friction and piston rock for quiet and improved performance, 4032 T6 Forged Aluminum Alloy, German Engineered...
    09105497
    SKU:
    09105497
    Availability:
    Ships Same Business Day
    Weight:
    0.70 LBS
    BORE - OVERSIZE:
    +0,02 MM
    DISPLACEMENT:
    249 CC
    MODEL:
    STANDARD SERIES
    PRODUCT NAME:
    PISTON KIT
    TYPE:
    DUAL RING
    BORE - OVERSIZE METRIC:
    +0.02 MM
    BORE SIZE METRIC:
    66.42 MM
    PISTON MATERIAL:
    ALUMINUM ALLOY
    PISTON MATERIAL:
    FORGED
    ENGINE TYPE:
    2-STROKE
    PISTON SIZE METRIC:
    66.36 MM
    RIDING STYLE:
    OFF-ROAD
    UNITS:
    KIT
    $150.96
    Qty in Cart: 0
    Quantity:
    Price:
    $150.96
    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!