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!
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Dirt Bike Cams and Parts
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Dirt Bike Connecting Rods and Parts
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Dirt Bike Crankcases and Parts
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Dirt Bike Crankshafts and Parts
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Dirt Bike Cylinder Heads and Parts
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Dirt Bike Cylinders and Parts
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Dirt Bike Engine Bearings
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Dirt Bike Engine Covers
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Dirt Bike Engine Gaskets and Kits
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Dirt Bike Engine Rebuild Kits
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Dirt Bike Engine Seals - Orings and Kits
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Dirt Bike Engine Valves and Parts
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Dirt Bike Flywheel and Rod Assemblies
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Dirt Bike Fuel Filters
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Dirt Bike Miscellaneous Engine Parts
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Dirt Bike Oil Coolers
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Dirt Bike Oil Filters
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Dirt Bike Oil Lines
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Dirt Bike Oil Pumps
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Dirt Bike Piston and Ring Kits
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Dirt Bike Piston Rings Only
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Dirt Bike Wrist Pins and Circlips
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- Price
- Subtotal
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On Sale
ATHENA Cylinder Kit - YZ125 - 54mm P400485100017
ATHENA
MSRP: $931.95Now: $838.76Was: $931.95ATHENA Cylinder Kit YZ125 54mm P400485100017Kits include aluminum cylinder with nickel-carbide coating designed with larger water jackets, Forged piston with molybdenum coating, Special gasket kit, Easy-to-follow step-by-step installation instructions,...9310095- SKU:
- 9310095
- Availability:
- Ships Same Business Day
- Weight:
- 5.60 LBS
- DISPLACEMENT:
- 125 CC
- PRODUCT NAME:
- CYLINDER KIT
- MATERIAL:
- ALUMINUM
- BORE SIZE METRIC:
- 54.00 MM
- CYLINDER BORE COATING:
- NICKEL-CARBIDE
- ENGINE TYPE:
- 2-STROKE
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- STYLE:
- STOCK BORE
MSRP: $931.95Now: $838.76Was: $931.95 -
BBR MOTORSPORTS Bore Kit Replacement Cylinder 411-HXR-5250
BBR MOTORSPORTS
$184.95BBR MOTORSPORTS Bore Kit Replacement Cylinder 411-HXR-5250Replacement Cylinder for 88CC Super Pro9310079- SKU:
- 9310079
- Availability:
- Ships Same Business Day
- Weight:
- 1.95 LBS
- BORE SIZE METRIC:
- 52.00 MM
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- PRODUCT NAME:
- CYLINDER KIT
- TYPE:
- REPLACEMENT
$184.95 -
On Sale
ATHENA Cylinder Kit - Yamaha 070200
ATHENA
MSRP: $220.95Now: $198.86Was: $220.95ATHENA Cylinder Kit Yamaha 070200Kits include aluminum cylinder with nickel-carbide coating designed with larger water jackets, Forged piston with molybdenum coating, Special gasket kit, Easy-to-follow step-by-step installation instructions, All are...9310077- SKU:
- 9310077
- Availability:
- Ships Same Business Day
- Weight:
- 2.70 LBS
- CYLINDER BORE COATING:
- NICKEL-CARBIDE
- ENGINE TYPE:
- 2-STROKE
- UNITS:
- KIT
- DISPLACEMENT:
- 70 CC
- PRODUCT NAME:
- CYLINDER KIT
- RIDING STYLE:
- STREET
- STYLE:
- BIG BORE
- BORE SIZE METRIC:
- 47.66 MM
- MATERIAL:
- ALUMINUM
MSRP: $220.95Now: $198.86Was: $220.95Qty in Cart: 0Quantity:Price:MSRP: $220.95Now: $198.86Was: $220.95Subtotal: -
On Sale
ATHENA Cylinder Kit - Yamaha/Malaguti 070100
ATHENA
MSRP: $220.95Now: $198.86Was: $220.95ATHENA Cylinder Kit Yamaha/Malaguti 070100Kits include aluminum cylinder with nickel-carbide coating designed with larger water jackets, Forged piston with molybdenum coating, Special gasket kit, Easy-to-follow step-by-step installation instructions, All...9310076- SKU:
- 9310076
- Availability:
- Ships Same Business Day
- Weight:
- 2.80 LBS
- CYLINDER BORE COATING:
- NICKEL-CARBIDE
- UNITS:
- KIT
- DISPLACEMENT:
- 70 CC
- PRODUCT NAME:
- CYLINDER KIT
- RIDING STYLE:
- STREET
- STYLE:
- BIG BORE
- BORE SIZE METRIC:
- 47.66 MM
- ENGINE TYPE:
- 2-STROKE
- MATERIAL:
- ALUMINUM
MSRP: $220.95Now: $198.86Was: $220.95 -
On Sale
ATHENA Cylinder Kit - YZ250F - 83mm P400485100012
ATHENA
MSRP: $958.95Now: $863.06Was: $958.95ATHENA Cylinder Kit YZ250F 83mm P400485100012Kits include aluminum cylinder with nickel-carbide coating designed with larger water jackets, Forged piston with molybdenum coating, Special gasket kit, Easy-to-follow step-by-step installation instructions,...9310024- SKU:
- 9310024
- Availability:
- Ships Same Business Day
- Weight:
- 3.68 LBS
- DISPLACEMENT:
- 290 CC
- ENGINE TYPE:
- 4-STROKE
- RIDING STYLE:
- OFF-ROAD
- MATERIAL:
- ALUMINUM
- BORE SIZE METRIC:
- 83.00 MM
- CYLINDER BORE COATING:
- NICKEL-CARBIDE
- PRODUCT NAME:
- CYLINDER KIT
- STYLE:
- BIG BORE
- UNITS:
- KIT
MSRP: $958.95Now: $863.06Was: $958.95 -
On Sale
ATHENA Cylinder Kit - KLX/DRZ/KFX/LTZ400 P400510100002
ATHENA
MSRP: $937.95Now: $844.16Was: $937.95ATHENA Cylinder Kit KLX/DRZ/KFX/LTZ400 P400510100002Kits include aluminum cylinder with nickel-carbide coating designed with larger water jackets, Forged piston with molybdenum coating, Special gasket kit, Easy-to-follow step-by-step installation...9310016- SKU:
- 9310016
- Availability:
- Ships Same Business Day
- Weight:
- 4.95 LBS
- DISPLACEMENT:
- 435 CC
- MATERIAL:
- ALUMINUM
- BORE SIZE METRIC:
- 94.00 MM
- ENGINE TYPE:
- 4-STROKE
- RIDING STYLE:
- ATV
- RIDING STYLE:
- OFF-ROAD
- CYLINDER BORE COATING:
- NICKEL-CARBIDE
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- CYLINDER KIT
- STYLE:
- BIG BORE
- UNITS:
- KIT
MSRP: $937.95Now: $844.16Was: $937.95 -
On Sale
ATHENA Cylinder Kit - DRZ/KFX P400510100001
ATHENA
MSRP: $764.95Now: $688.46Was: $764.95ATHENA Cylinder Kit DRZ/KFX P400510100001Kits include aluminum cylinder with nickel-carbide coating designed with larger water jackets, Forged piston with molybdenum coating, Special gasket kit, Easy-to-follow step-by-step installation instructions, All...9310015- SKU:
- 9310015
- Availability:
- Ships Same Business Day
- Weight:
- 4.71 LBS
- BORE SIZE METRIC:
- 90.00 MM
- MATERIAL:
- ALUMINUM
- STYLE:
- STOCK BORE
- CYLINDER BORE COATING:
- NICKEL-CARBIDE
- ENGINE TYPE:
- 4-STROKE
- RIDING STYLE:
- ATV
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- PRODUCT NAME:
- CYLINDER KIT
- DISPLACEMENT:
- 400 CC
MSRP: $764.95Now: $688.46Was: $764.95 -
On Sale
ATHENA Cylinder Kit - KX125 - 54mm P400250100001
ATHENA
MSRP: $814.95Now: $733.46Was: $814.95ATHENA Cylinder Kit KX125 54mm P400250100001Kits include aluminum cylinder with nickel-carbide coating designed with larger water jackets, Forged piston with molybdenum coating, Special gasket kit, Easy-to-follow step-by-step installation instructions,...9310012- SKU:
- 9310012
- Availability:
- Ships Same Business Day
- Weight:
- 6.18 LBS
- BORE SIZE METRIC:
- 54.00 MM
- CYLINDER BORE COATING:
- NICKEL-CARBIDE
- UNITS:
- KIT
- DISPLACEMENT:
- 125 CC
- PRODUCT NAME:
- CYLINDER KIT
- ENGINE TYPE:
- 2-STROKE
- MATERIAL:
- ALUMINUM
- RIDING STYLE:
- OFF-ROAD
- STYLE:
- STOCK BORE
MSRP: $814.95Now: $733.46Was: $814.95 -
BLOWSION Girdle Kit 01-03-109
BLOWSION
$122.95BLOWSION Girdle Kit 01-03-109Girdle kit available for those looking for maximum cylinder support, Developed and designed in conjunction with the Kommander himself, Steve Webster, as a Blowsion exclusive offering, Domes, two required, are sold separately9300106- SKU:
- 9300106
- Availability:
- Ships Same Business Day
- Weight:
- 0.90 LBS
- TYPE:
- CYLINDER
- UNITS:
- KIT
- MATERIAL:
- STAINLESS STEEL
- PRODUCT NAME:
- GIRDLE KIT
- RIDING STYLE:
- WATERCRAFT
$122.95 -
BLOWSION Cylinder Head 01-03-118
BLOWSION
$305.95BLOWSION Cylinder Head 01-03-118Developed and designed in conjunction with the Kommander himself, Steve Webster, as a Blowsion exclusive offering, One-piece Yamaha billet aluminum/CNC performance cylinder head kit provides the best of both worlds with...9300105- SKU:
- 9300105
- Availability:
- Ships Same Business Day
- Weight:
- 4.50 LBS
- PRODUCT NAME:
- HEAD
- RIDING STYLE:
- WATERCRAFT
- TYPE:
- CYLINDER
- COLOR/FINISH:
- BLACK
- MATERIAL:
- ALUMINUM
- UNITS:
- EACH
$305.95 -
WISECO Valve Kit SVKB6353
WISECO
$344.95WISECO Valve Kit SVKB6353Complete 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...9263086- SKU:
- 9263086
- Availability:
- Ships Same Business Day
- Weight:
- 1.05 LBS
- UNITS:
- KIT
- APPLICATION:
- EXHAUST
- APPLICATION:
- INTAKE
- MATERIAL:
- STEEL
- PRODUCT NAME:
- VALVE KIT
- RIDING STYLE:
- OFF-ROAD
$344.95 -
HOT CAMS Intake Valve 8400036-2
HOT CAMS
$102.95HOT CAMS Intake Valve 8400036-2Forged one-piece OEM replacement valveS, Precision machined valve head and seat surfaces, Nitride coated, Induction hardened valve stem tip, Precision polished surface, Compatible with OEM valve keepers9262637- SKU:
- 9262637
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- APPLICATION:
- INTAKE
- PRODUCT NAME:
- VALVE
- RIDING STYLE:
- OFF-ROAD
- BASE COLOR:
- SILVER
- COLOR/FINISH:
- TITANIUM
- MATERIAL:
- NITRIDE COATED
- MATERIAL:
- TITANIUM
- UNITS:
- EACH
$102.95 -
HOT CAMS Exhaust Valve 8400036-1
HOT CAMS
$99.00HOT CAMS Exhaust Valve 8400036-1Forged one-piece OEM replacement valveS, Precision machined valve head and seat surfaces, Nitride coated, Induction hardened valve stem tip, Precision polished surface, Compatible with OEM valve keepers9262636- SKU:
- 9262636
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- APPLICATION:
- EXHAUST
- BASE COLOR:
- SILVER
- UNITS:
- EACH
- COLOR/FINISH:
- TITANIUM
- RIDING STYLE:
- OFF-ROAD
- MATERIAL:
- TITANIUM
- PRODUCT NAME:
- VALVE
$99.00 -
HOT CAMS Intake Valve 8400032-2
HOT CAMS
$99.00HOT CAMS Intake Valve 8400032-2Forged one-piece OEM replacement valveS, Precision machined valve head and seat surfaces, Nitride coated, Induction hardened valve stem tip, Precision polished surface, Compatible with OEM valve keepers9262630- SKU:
- 9262630
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- BASE COLOR:
- SILVER
- APPLICATION:
- INTAKE
- RIDING STYLE:
- OFF-ROAD
- COLOR/FINISH:
- TITANIUM
- MATERIAL:
- NITRIDE COATED
- MATERIAL:
- TITANIUM
- UNITS:
- EACH
- PRODUCT NAME:
- VALVE
$99.00 -
HOT CAMS Intake Valve 8400031-2
HOT CAMS
$99.00HOT CAMS Intake Valve 8400031-2Forged one-piece OEM replacement valveS, Precision machined valve head and seat surfaces, Nitride coated, Induction hardened valve stem tip, Precision polished surface, Compatible with OEM valve keepers9262629- SKU:
- 9262629
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- BASE COLOR:
- SILVER
- APPLICATION:
- INTAKE
- RIDING STYLE:
- OFF-ROAD
- COLOR/FINISH:
- TITANIUM
- MATERIAL:
- NITRIDE COATED
- MATERIAL:
- TITANIUM
- UNITS:
- EACH
- PRODUCT NAME:
- VALVE
$99.00 -
HOT CAMS Exhaust Valve 8400031-1
HOT CAMS
$102.95HOT CAMS Exhaust Valve 8400031-1Forged one-piece OEM replacement valveS, Precision machined valve head and seat surfaces, Nitride coated, Induction hardened valve stem tip, Precision polished surface, Compatible with OEM valve keepers9262628- SKU:
- 9262628
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- BASE COLOR:
- SILVER
- MATERIAL:
- NITRIDE COATED
- UNITS:
- EACH
- COLOR/FINISH:
- TITANIUM
- RIDING STYLE:
- OFF-ROAD
- APPLICATION:
- EXHAUST
- PRODUCT NAME:
- VALVE
- MATERIAL:
- TITANIUM
$102.95 -
HOT CAMS Intake Valve 8400030-2
HOT CAMS
$99.00HOT CAMS Intake Valve 8400030-2Forged one-piece OEM replacement valveS, Precision machined valve head and seat surfaces, Nitride coated, Induction hardened valve stem tip, Precision polished surface, Compatible with OEM valve keepers9262627- SKU:
- 9262627
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- BASE COLOR:
- SILVER
- MATERIAL:
- NITRIDE COATED
- UNITS:
- EACH
- COLOR/FINISH:
- TITANIUM
- RIDING STYLE:
- OFF-ROAD
- APPLICATION:
- INTAKE
- MATERIAL:
- TITANIUM
- PRODUCT NAME:
- VALVE
$99.00 -
HOT CAMS Intake Valve 8400028-2
HOT CAMS
$99.00HOT CAMS Intake Valve 8400028-2Forged one-piece OEM replacement valveS, Precision machined valve head and seat surfaces, Nitride coated, Induction hardened valve stem tip, Precision polished surface, Compatible with OEM valve keepers9262624- SKU:
- 9262624
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- MATERIAL:
- TITANIUM
- APPLICATION:
- INTAKE
- PRODUCT NAME:
- VALVE
- BASE COLOR:
- SILVER
- COLOR/FINISH:
- TITANIUM
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
$99.00 -
HOT CAMS Intake Valve 8400027-2
HOT CAMS
$99.00HOT CAMS Intake Valve 8400027-2Forged one-piece OEM replacement valveS, Precision machined valve head and seat surfaces, Nitride coated, Induction hardened valve stem tip, Precision polished surface, Compatible with OEM valve keepers9262623- SKU:
- 9262623
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- MATERIAL:
- TITANIUM
- APPLICATION:
- INTAKE
- PRODUCT NAME:
- VALVE
- COLOR/FINISH:
- TITANIUM
- MATERIAL:
- NITRIDE COATED
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
- BASE COLOR:
- SILVER
$99.00 -
HOT CAMS Intake Valve 8400011-2
HOT CAMS
$99.00HOT CAMS Intake Valve 8400011-2Forged one-piece OEM replacement valveS, Precision machined valve head and seat surfaces, Nitride coated, Induction hardened valve stem tip, Precision polished surface, Compatible with OEM valve keepers9262612- SKU:
- 9262612
- Availability:
- Ships Same Business Day
- Weight:
- 0.02 LBS
- MATERIAL:
- NITRIDE COATED
- PRODUCT NAME:
- VALVE
- UNITS:
- EACH
- COLOR/FINISH:
- TITANIUM
- MATERIAL:
- TITANIUM
- APPLICATION:
- INTAKE
- BASE COLOR:
- SILVER
- RIDING STYLE:
- OFF-ROAD
$99.00
