Dirt Bike Engine
Dirt Bike Engine Parts at JJ Motorsports
Discover a full range of dirt bike engine components for rebuilding or upgrading your performance from JJ Motorsports. 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 to keep your engine running at peak efficiency on the track or trails.
Shop trusted brands like Wiseco for forged piston kits and K&N for high-flow oil filters. Explore related categories such as Dirt Bike Air and Fuel for intake upgrades or Dirt Bike Exhaust for complete systems.
Browse our in-stock inventory below with same-day shipping and expert support. Questions? Contact us for fitment advice!
- Product
- Qty in Cart
- Quantity
- Price
- Subtotal
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MOOSE RACING Cylinder - Standard MSE20002
MOOSE RACING
$366.95Replace your damaged or worn OEM cylinder, Made from cast aluminum; nickel silicon carbide plated, Precision-machined and honed to OEM stock bore sizes, Extremely durable low-friction bore surface allows for greater heat dissipation, Stock OEM...09310451- SKU:
- 09310451
- Availability:
- Ships Same Business Day
- Weight:
- 2.93 LBS
- ENGINE TYPE:
- 4-CYCLE
- MATERIAL:
- CAST
- PRODUCT NAME:
- CYLINDER
- CYLINDER BORE COATING:
- NICKEL-SILICON CARBIDE
- MATERIAL:
- ALUMINUM
- UNITS:
- EACH
- RIDING STYLE:
- OFF-ROAD
$366.95 -
MOOSE RACING Cylinder - Standard MSE20003
MOOSE RACING
$380.95Replace your damaged or worn OEM cylinder, Made from cast aluminum; nickel silicon carbide plated, Precision-machined and honed to OEM stock bore sizes, Extremely durable low-friction bore surface allows for greater heat dissipation, Stock OEM...09310452- SKU:
- 09310452
- Availability:
- Ships Same Business Day
- Weight:
- 3.45 LBS
- MATERIAL:
- CAST
- PRODUCT NAME:
- CYLINDER
- CYLINDER BORE COATING:
- NICKEL-SILICON CARBIDE
- RIDING STYLE:
- OFF-ROAD
- MATERIAL:
- ALUMINUM
- UNITS:
- EACH
$380.95 -
MOOSE RACING Wrist Pin - DLC S748-2000-15C
MOOSE RACING
$66.95Wrist pins are nitride-coated, providing a hardened, wear-resistant bearing surface09130095- SKU:
- 09130095
- Availability:
- Ships Same Business Day
- Weight:
- 0.18 LBS
- RIDING STYLE:
- ATV
- RIDING STYLE:
- OFF-ROAD
- STYLE:
- 4-STROKE
- UNITS:
- EACH
- APPLICATION:
- PISTON
- PRODUCT NAME:
- WRIST PIN
$66.95 -
MOOSE RACING Piston Kit - 43.46 mm MSE24352B
MOOSE RACING
$127.95Gravity cast aluminum alloy with 18% silicon to increase resistance to wear and decrease thermal distortion, thus providing a longer piston life, Coated skirts ease break-in, decreasing wear and aiding in lubrication, Wear-resistant piston rings, Wrist...09105957- SKU:
- 09105957
- Availability:
- Ships Same Business Day
- Weight:
- 0.26 LBS
- PISTON DIAMETER METRIC:
- 43.46 MM
- PRODUCT NAME:
- PISTON KIT
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- PISTON MATERIAL:
- ALUMINUM ALLOY
$127.95 -
MOOSE RACING Piston Kit MSE24384B
MOOSE RACING
$134.95Gravity cast aluminum alloy with 18% silicon to increase resistance to wear and decrease thermal distortion, thus providing a longer piston life, Coated skirts ease break-in, decreasing wear and aiding in lubrication, Wear-resistant piston rings, Wrist...09106021- SKU:
- 09106021
- Availability:
- Ships Same Business Day
- Weight:
- 0.81 LBS
- UNITS:
- KIT
- PISTON DIAMETER METRIC:
- 66.36 MM
- PISTON MATERIAL:
- ALUMINUM ALLOY
- PRODUCT NAME:
- PISTON KIT
- RIDING STYLE:
- OFF-ROAD
$134.95 -
MOOSE RACING Piston Kit MSE24385B
MOOSE RACING
$154.95Gravity cast aluminum alloy with 18% silicon to increase resistance to wear and decrease thermal distortion, thus providing a longer piston life, Coated skirts ease break-in, decreasing wear and aiding in lubrication, Wear-resistant piston rings, Wrist...09106023- SKU:
- 09106023
- Availability:
- Ships Same Business Day
- Weight:
- 0.61 LBS
- PISTON DIAMETER METRIC:
- 71.96 MM
- PRODUCT NAME:
- PISTON KIT
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- PISTON MATERIAL:
- ALUMINUM ALLOY
$154.95Qty in Cart: 0Quantity:Price:$154.95Subtotal: -
MOOSE RACING Ring Set - For 96 mm Piston CP9600C
MOOSE RACING
$35.95Made in the U.S.A., Be sure to use race fuel with some applications09120602- SKU:
- 09120602
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- RIDING STYLE:
- OFF-ROAD
- PISTON SIZE METRIC:
- STANDARD
- PRODUCT NAME:
- PISTON RING
- UNITS:
- SET
$35.95 -
MOOSE RACING Ring Set - For 95 mm Piston CP9500C
MOOSE RACING
$35.95Made in the U.S.A., Be sure to use race fuel with some applications09120603- SKU:
- 09120603
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- PISTON SIZE METRIC:
- STANDARD
- PRODUCT NAME:
- PISTON RING
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- SET
$35.95 -
MOOSE RACING Ring Set - For 90 mm Piston CPN2-3543
MOOSE RACING
$35.95Made in the U.S.A., Be sure to use race fuel with some applications09120333- SKU:
- 09120333
- Availability:
- Ships Same Business Day
- Weight:
- 0.06 LBS
- RIDING STYLE:
- OFF-ROAD
- ENGINE TYPE:
- 4-STROKE
- PISTON SIZE METRIC:
- STANDARD
- PRODUCT NAME:
- PISTON RING
- RIDING STYLE:
- ATV
- UNITS:
- SET
$35.95 -
MOOSE RACING Connecting Rod MR13187
MOOSE RACING
$474.95Moose Racing has teamed up with CP-Carrillo to bring you the highest quality, professional connecting rod, 100% machined from an oversized forging ensures proper grain flow and consistency through the manufacturing process, Made from proprietary material...09230621- SKU:
- 09230621
- Availability:
- Ships Same Business Day
- Weight:
- 1.15 LBS
- PRODUCT NAME:
- CONNECTING ROD
- STYLE:
- HIGH PERFORMANCE
- MATERIAL:
- PROPRIETARY ALLOY
- UNITS:
- EACH
- RIDING STYLE:
- OFF-ROAD
$474.95 -
MOOSE RACING Piston Kit - 66.36 mm MSE22521B
MOOSE RACING
$143.95Gravity cast aluminum alloy with 18% silicon to increase resistance to wear and decrease thermal distortion, thus providing a longer piston life, Coated skirts ease break-in, decreasing wear and aiding in lubrication, Wear-resistant piston rings, Wrist...09102679- SKU:
- 09102679
- Availability:
- Ships Same Business Day
- Weight:
- 0.74 LBS
- PISTON MATERIAL:
- ALUMINUM ALLOY
- SKIRT COATING:
- MOLYBDENUM DISULPHITE
- STYLE:
- CAST REPLICA
- CYLINDER DIAMETER METRIC:
- 66.40 MM
- DISPLACEMENT:
- 250 CC
- ENGINE TYPE:
- 2-STROKE
- PRODUCT NAME:
- PISTON KIT
- COMPRESSION RATIO IMPERIAL:
- STOCK
- PISTON DIAMETER METRIC:
- 66.36 MM
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
$143.95 -
MOOSE RACING Cylinder - Standard MSECW20013
MOOSE RACING
$364.95Replace your damaged or worn OEM cylinder, Made from cast aluminum; nickel silicon carbide plated, Precision-machined and honed to OEM stock bore sizes, Extremely durable low-friction bore surface allows for greater heat dissipation, Stock OEM...09310968- SKU:
- 09310968
- Availability:
- Ships Same Business Day
- Weight:
- 2.51 LBS
- BORE SIZE METRIC:
- STANDARD
- CYLINDER BORE COATING:
- NICKEL-SILICON CARBIDE
- DISPLACEMENT:
- 250 CC
- MATERIAL:
- ALUMINUM
- COLOR/FINISH:
- GRAY
- ENGINE TYPE:
- 4-CYCLE
- MATERIAL:
- CAST
- CYLINDER DIAMETER METRIC:
- 77.00 MM
- UNITS:
- EACH
- CYLINDER DIAMETER:
- 77,00 MM
- PRODUCT NAME:
- CYLINDER
- RIDING STYLE:
- OFF-ROAD
$364.95 -
MOOSE RACING Cylinder - Standard - CRF250 MSECW10011
MOOSE RACING
$338.95Replace your damaged or worn OEM cylinder, Made from cast aluminum; nickel silicon carbide plated, Precision-machined and honed to OEM stock bore sizes, Extremely durable low-friction bore surface allows for greater heat dissipation, Stock OEM...09310878- SKU:
- 09310878
- Availability:
- Ships Same Business Day
- Weight:
- 2.45 LBS
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
- MATERIAL:
- ALUMINUM
- MATERIAL:
- CAST
- PRODUCT NAME:
- CYLINDER
- CYLINDER BORE COATING:
- NICKEL-SILICON CARBIDE
$338.95 -
MOOSE RACING Intake Valve Kit M30-31200
MOOSE RACING
$217.95Stainless steel conversion kits include only what’s needed to convert your head to the long-life stainless steel Black Diamond intake valves, Extend the life of the valve train and intake components by as much as 4x over the OEM titanium parts, Valves...09262427- SKU:
- 09262427
- Availability:
- Ships Same Business Day
- Weight:
- 0.40 LBS
- APPLICATION:
- INTAKE
- PRODUCT NAME:
- VALVE KIT
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- MATERIAL:
- STAINLESS STEEL
$217.95 -
MOOSE RACING Intake Valve Kit M30-31230
MOOSE RACING
$196.95Stainless steel conversion kits include only what’s needed to convert your head to the long-life stainless steel Black Diamond intake valves, Extend the life of the valve train and intake components by as much as 4x over the OEM titanium parts, Valves...09262429- SKU:
- 09262429
- Availability:
- Ships Same Business Day
- Weight:
- 0.55 LBS
- APPLICATION:
- INTAKE
- PRODUCT NAME:
- VALVE KIT
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- MATERIAL:
- STAINLESS STEEL
$196.95 -
MOOSE RACING Intake Valve Kit M80-82350
MOOSE RACING
$196.95Stainless steel conversion kits include only what’s needed to convert your head to the long-life stainless steel Black Diamond intake valves, Extend the life of the valve train and intake components by as much as 4x over the OEM titanium parts, Valves...09263192- SKU:
- 09263192
- Availability:
- Ships Same Business Day
- Weight:
- 0.35 LBS
- UNITS:
- KIT
- APPLICATION:
- INTAKE
- MATERIAL:
- STAINLESS STEEL
- PRODUCT NAME:
- VALVE KIT
- RIDING STYLE:
- OFF-ROAD
$196.95 -
MOOSE RACING Valve and Spring Kit M80-82360
MOOSE RACING
$196.95Stainless steel conversion kits include only what’s needed to convert your head to the long-life stainless steel Black Diamond intake valves, Extend the life of the valve train and intake components by as much as 4x over the OEM titanium parts, Valves...09263193- SKU:
- 09263193
- Availability:
- Ships Same Business Day
- Weight:
- 1.25 LBS
- APPLICATION:
- EXHAUST
- PRODUCT NAME:
- VALVE KIT
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- MATERIAL:
- STAINLESS STEEL
$196.95 -
MOOSE RACING Exhaust Valve Kit M30-33690
MOOSE RACING
$45.95Stainless steel conversion kits include only what’s needed to convert your head to the long-life stainless steel Black Diamond intake valves, Extends the life of the valve train and intake components by as much as 4x over the OEM titanium parts, Includes...09263304- SKU:
- 09263304
- Availability:
- Ships Same Business Day
- Weight:
- 0.41 LBS
- PRODUCT NAME:
- VALVE KIT
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- APPLICATION:
- EXHAUST
$45.95 -
MOOSE RACING Cylinder - Standard MSE20005
MOOSE RACING
$506.95Replace your damaged or worn OEM cylinder, Made from cast aluminum; nickel silicon carbide plated, Precision-machined and honed to OEM stock bore sizes, Extremely durable low-friction bore surface allows for greater heat dissipation, Stock OEM...09310454- SKU:
- 09310454
- Availability:
- Ships Same Business Day
- Weight:
- 3.43 LBS
- CYLINDER BORE COATING:
- NICKEL-SILICON CARBIDE
- MATERIAL:
- ALUMINUM
- ENGINE TYPE:
- 4-CYCLE
- MATERIAL:
- CAST
- UNITS:
- EACH
- PRODUCT NAME:
- CYLINDER
- RIDING STYLE:
- OFF-ROAD
$506.95 -
MOOSE RACING Cylinder - Standard MSE30001
MOOSE RACING
$380.95Replace your damaged or worn OEM cylinder, Made from cast aluminum; nickel silicon carbide plated, Precision-machined and honed to OEM stock bore sizes, Extremely durable low-friction bore surface allows for greater heat dissipation, Stock OEM...09310456- SKU:
- 09310456
- Availability:
- Ships Same Business Day
- Weight:
- 2.48 LBS
- MATERIAL:
- ALUMINUM
- MATERIAL:
- CAST
- UNITS:
- EACH
- CYLINDER BORE COATING:
- NICKEL-SILICON CARBIDE
- PRODUCT NAME:
- CYLINDER
- RIDING STYLE:
- OFF-ROAD
$380.95
