Dirt Bike Engine
Discover a full range of dirt bike engine components for rebuilding or upgrading your performance. 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.
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KIBBLEWHITE Valve Spring Kit 80-80206
KIBBLEWHITE
MSRP: $339.95$317.71KIBBLEWHITE Valve Spring Kit 80-80206Black Diamond™ valves feature one-piece stainless steel construction with stellite tips and special impregnation to improve wear properties and reduce friction; White Diamond® valves feature one-piece construction and...09260095- SKU:
- 09260095
- Availability:
- Ships Same Business Day
- Weight:
- 0.28 LBS
- APPLICATION:
- EXHAUST
- APPLICATION:
- INTAKE
- MATERIAL:
- TITANIUM
- PRODUCT NAME:
- SPRING KIT
- RIDING STYLE:
- ATV
- SPRING LIFT IMPERIAL:
- 0.380'
- SPRING OPEN PRESSURE:
- 86 LB
- SPRING LIFT:
- 0,380'
- SPRING SEAT PRESSURE:
- 39 LB
- TYPE:
- VALVE
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
MSRP: $339.95$317.71 -
KIBBLEWHITE Intake Valve Guide 80-80220
KIBBLEWHITE
MSRP: $15.95$14.34KIBBLEWHITE Intake Valve Guide 80-80220All valve guides are made of Ampco-45, a high-performance compound with 80% copper content to provide great heat conductivity and 5% nickel content for wear resistance, Made in the U.S.A.09260096- SKU:
- 09260096
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- MATERIAL:
- C630 BRONZE
- SIZE IMPERIAL:
- STANDARD
- INSIDE DIAMETER IMPERIAL:
- 0.1768'
- OUTSIDE DIAMETER IMPERIAL:
- 0.3957'
- PRODUCT NAME:
- VALVE GUIDE
- UNITS:
- EACH
- APPLICATION:
- INTAKE
- RIDING STYLE:
- ATV
- RIDING STYLE:
- OFF-ROAD
MSRP: $15.95$14.34 -
KIBBLEWHITE Exhaust Valve Guide 80-80230
KIBBLEWHITE
MSRP: $15.95$14.34KIBBLEWHITE Exhaust Valve Guide 80-80230All valve guides are made of Ampco-45, a high-performance compound with 80% copper content to provide great heat conductivity and 5% nickel content for wear resistance, Made in the U.S.A.09260101- SKU:
- 09260101
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- PRODUCT NAME:
- VALVE GUIDE
- MATERIAL:
- C630 BRONZE
- RIDING STYLE:
- OFF-ROAD
- INSIDE DIAMETER IMPERIAL:
- 0.1961'
- RIDING STYLE:
- ATV
- SIZE IMPERIAL:
- STANDARD
- APPLICATION:
- EXHAUST
- OUTSIDE DIAMETER IMPERIAL:
- 0.3957'
- UNITS:
- EACH
MSRP: $15.95$14.34 -
KIBBLEWHITE Intake Valve 80-80213H
KIBBLEWHITE
MSRP: $40.95$37.55KIBBLEWHITE Intake Valve 80-80213HWhite Diamond™ valves are CNC machined from one-piece forgings of EV8 Stainless Steel or Inconel-751, Electroplated with a 360º anode, to produce an even coat of the highest grade hard chrome finish, Made in the U.S.A.09260106- SKU:
- 09260106
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- APPLICATION:
- INTAKE
- HEAD DIAMETER METRIC:
- 27.00 MM
- MATERIAL:
- STAINLESS STEEL
- PRODUCT NAME:
- VALVE
- SIZE METRIC:
- STANDARD
- UNITS:
- EACH
- LENGTH IMPERIAL:
- 3.040'
- MODEL:
- WHITE DIAMOND™
- RIDING STYLE:
- OFF-ROAD
- STEM DIAMETER IMPERIAL:
- 0.1765'
- RIDING STYLE:
- ATV
- TULIP ANGLE:
- 15°
MSRP: $40.95$37.55 -
K&S TECHNOLOGIES Water Pump Repair Gasket Kit - CRF450R 75-1001
K&S TECHNOLOGIES
$37.95K&S TECHNOLOGIES Water Pump Repair Gasket Kit CRF450R 75-1001Each kit includes all necessary gaskets, washers, seals and O-rings; kit contents vary by model09341909- SKU:
- 09341909
- Availability:
- Ships Same Business Day
- Weight:
- 0.21 LBS
- TYPE:
- WATER PUMP REPAIR
- UNITS:
- KIT
- PRODUCT NAME:
- GASKET KIT
- RIDING STYLE:
- OFF-ROAD
$37.95 -
K&S TECHNOLOGIES Water Pump Repair Gasket Kit - CRF250R 75-1002
K&S TECHNOLOGIES
$37.95K&S TECHNOLOGIES Water Pump Repair Gasket Kit CRF250R 75-1002Each kit includes all necessary gaskets, washers, seals and O-rings; kit contents vary by model09341910- SKU:
- 09341910
- Availability:
- Ships Same Business Day
- Weight:
- 0.21 LBS
- UNITS:
- KIT
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- WATER PUMP REPAIR
- PRODUCT NAME:
- GASKET KIT
$37.95 -
K&S TECHNOLOGIES Water Pump Repair Kit - CR125 75-1007
K&S TECHNOLOGIES
$34.95K&S TECHNOLOGIES Water Pump Repair Kit CR125 75-1007Each kit includes all necessary gaskets, washers, seals and O-rings; kit contents vary by model09342878- SKU:
- 09342878
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- PRODUCT NAME:
- GASKET KIT
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- WATER PUMP REPAIR
- UNITS:
- KIT
$34.95Qty in Cart: 0Quantity:Price:$34.95Subtotal: -
CYLINDER WORKS Gasket Kit - Big Bore 51007-G01
CYLINDER WORKS
$135.95CYLINDER WORKS Gasket Kit Big Bore 51007-G01Made in the U.S.A.09346006- SKU:
- 09346006
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- BORE SIZE IMPERIAL:
- OVERSIZE (+2.00 MM)
- PRODUCT NAME:
- GASKET KIT
- TYPE:
- CYLINDER
$135.95 -
CYLINDER WORKS Cylinder Kit - Big Bore CW51008K01
CYLINDER WORKS
$885.95CYLINDER WORKS Cylinder Kit Big Bore CW51008K01Ready-to-install, direct bolt-on cylinders require no re-plating and look virtually identical to the OEM cylinders, Cylinder kits include matched Vertex pistons to ensure longevity, performance and reduced...09310967- SKU:
- 09310967
- Availability:
- Ships Same Business Day
- Weight:
- 4.60 LBS
- OVERBORE IMPERIAL:
- +2.00 MM
- COMPRESSION RATIO IMPERIAL:
- 14.0:1
- CYLINDER BORE COATING:
- NICKEL-SILICON CARBIDE
- CYLINDER DIAMETER:
- 90,00 MM
- PRODUCT NAME:
- CYLINDER KIT
- RIDING STYLE:
- OFF-ROAD
- STYLE:
- BIG BORE
- UNITS:
- KIT
- CYLINDER DIAMETER METRIC:
- 90.00 MM
- DISPLACEMENT:
- 366 CC
- ENGINE TYPE:
- 4-CYCLE
- RIDING STYLE:
- STREET
$885.95 -
CYLINDER WORKS Cylinder - Standard 10008
CYLINDER WORKS
$390.95CYLINDER WORKS Cylinder Standard 10008Ready-to-install, direct bolt-on cylinder requires no re-plating and looks virtually identical to the OEM cylinders, Nickel silicon carbide-plated for long life, Made in the U.S.A.09311013- SKU:
- 09311013
- Availability:
- Ships Same Business Day
- Weight:
- 3.50 LBS
- ENGINE TYPE:
- 4-CYCLE
- STYLE:
- STANDARD
- CYLINDER DIAMETER METRIC:
- 96.00 MM
- CYLINDER DIAMETER:
- 96,00 MM
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
- PRODUCT NAME:
- CYLINDER
$390.95 -
CYLINDER WORKS Cylinder - Standard 50005
CYLINDER WORKS
$584.95CYLINDER WORKS Cylinder Standard 50005Ready-to-install, direct bolt-on cylinder requires no re-plating and looks virtually identical to the OEM cylinders, Nickel silicon carbide-plated for long life, Made in the U.S.A.09311015- SKU:
- 09311015
- Availability:
- Ships Same Business Day
- Weight:
- 2.50 LBS
- ENGINE TYPE:
- 2-CYCLE
- STYLE:
- STANDARD
- CYLINDER DIAMETER:
- 45,00 MM
- CYLINDER DIAMETER METRIC:
- 45.00 MM
- UNITS:
- EACH
- PRODUCT NAME:
- CYLINDER
- RIDING STYLE:
- OFF-ROAD
$584.95Qty in Cart: 0Quantity:Price:$584.95Subtotal: -
CYLINDER WORKS Cylinder Head Kit - Standard Bore CH3001-K01
CYLINDER WORKS
$637.95CYLINDER WORKS Cylinder Head Kit Standard Bore CH3001-K01New replacement cylinder head, Include cam caps and cam cap bolts, Include C630 (nickel/aluminum/bronze) valve seats and guides, Competition valve job, Shortened valve guides to accept higher lift...09311018- SKU:
- 09311018
- Availability:
- Ships Same Business Day
- Weight:
- 5.50 LBS
- PRODUCT NAME:
- CYLINDER KIT
- STYLE:
- STANDARD
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
$637.95 -
CYLINDER WORKS Cylinder Head Kit - Standard Bore CH3002-K01
CYLINDER WORKS
$634.95CYLINDER WORKS Cylinder Head Kit Standard Bore CH3002-K01New replacement cylinder head, Include cam caps and cam cap bolts, Include C630 (nickel/aluminum/bronze) valve seats and guides, Competition valve job, Shortened valve guides to accept higher lift...09311019- SKU:
- 09311019
- Availability:
- Ships Same Business Day
- Weight:
- 5.45 LBS
- PRODUCT NAME:
- CYLINDER KIT
- RIDING STYLE:
- OFF-ROAD
- STYLE:
- STANDARD
- UNITS:
- KIT
$634.95 -
CYLINDER WORKS Cylinder - Standard CW20014
CYLINDER WORKS
$390.95CYLINDER WORKS Cylinder Standard CW20014Ready-to-install, direct bolt-on cylinder requires no re-plating and looks virtually identical to the OEM cylinders, Nickel silicon carbide-plated for long life, Made in the U.S.A.09311020- SKU:
- 09311020
- Availability:
- Ships Same Business Day
- Weight:
- 3.55 LBS
- CYLINDER DIAMETER METRIC:
- 97.00 MM
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
- PRODUCT NAME:
- CYLINDER
- ENGINE TYPE:
- 4-CYCLE
- CYLINDER DIAMETER:
- 97,00 MM
- STYLE:
- STANDARD
$390.95 -
CYLINDER WORKS Cylinder - Standard 50004
CYLINDER WORKS
$487.95CYLINDER WORKS Cylinder Standard 50004Ready-to-install, direct bolt-on cylinders require no re-plating and look virtually identical to the OEM cylinders, Nickel Silicon Carbide plated for long life, Big bore cylinders do not require machine work, Made in...09310492- SKU:
- 09310492
- Availability:
- Ships Same Business Day
- Weight:
- 2.95 LBS
- RIDING STYLE:
- OFF-ROAD
- STYLE:
- STANDARD
- ENGINE TYPE:
- 4-CYCLE
- PRODUCT NAME:
- CYLINDER
- BORE SIZE METRIC:
- 77.95 MM
- CYLINDER DIAMETER:
- 78,00 MM
- CYLINDER DIAMETER METRIC:
- 78.00 MM
- UNITS:
- EACH
$487.95 -
CYLINDER WORKS Cylinder - Standard - YZ450F 20005
CYLINDER WORKS
$506.95CYLINDER WORKS Cylinder Standard YZ450F 20005Ready-to-install, direct bolt-on cylinders require no re-plating and look virtually identical to the OEM cylinders, Nickel Silicon Carbide plated for long life, Big bore cylinders do not require machine work,...09310396- SKU:
- 09310396
- Availability:
- Ships Same Business Day
- Weight:
- 3.35 LBS
- BORE SIZE METRIC:
- 97.00 MM
- CYLINDER DIAMETER:
- 97,00 MM
- ENGINE TYPE:
- 4-CYCLE
- PRODUCT NAME:
- CYLINDER
- RIDING STYLE:
- OFF-ROAD
- STYLE:
- STANDARD
- CYLINDER DIAMETER METRIC:
- 97.00 MM
- UNITS:
- EACH
$506.95 -
CYLINDER WORKS Cylinder - Standard - KX250F - 2009 30004
CYLINDER WORKS
$390.95CYLINDER WORKS Cylinder Standard KX250F 2009 30004Ready-to-install, direct bolt-on cylinders require no re-plating and look virtually identical to the OEM cylinders, Nickel Silicon Carbide plated for long life, Big bore cylinders do not require machine...09310398- SKU:
- 09310398
- Availability:
- Ships Same Business Day
- Weight:
- 2.30 LBS
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
- BORE SIZE METRIC:
- 77.00 MM
- CYLINDER DIAMETER:
- 77,00 MM
- ENGINE TYPE:
- 4-CYCLE
- PRODUCT NAME:
- CYLINDER
- CYLINDER DIAMETER METRIC:
- 77.00 MM
- STYLE:
- STANDARD
$390.95 -
CYLINDER WORKS Cylinder - Standard - KX250F 2010 30005
CYLINDER WORKS
$402.95CYLINDER WORKS Cylinder Standard KX250F 2010 30005Ready-to-install, direct bolt-on cylinders require no re-plating and look virtually identical to the OEM cylinders, Nickel Silicon Carbide plated for long life, Big bore cylinders do not require machine...09310399- SKU:
- 09310399
- Availability:
- Ships Same Business Day
- Weight:
- 2.50 LBS
- COMPRESSION RATIO IMPERIAL:
- 13.2:1
- CYLINDER DIAMETER METRIC:
- 77.00 MM
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
- DISPLACEMENT:
- 249 CC
- ENGINE TYPE:
- 4-CYCLE
- STYLE:
- STANDARD
- BORE SIZE METRIC:
- 77.00 MM
- CYLINDER BORE COATING:
- NICKEL-SILICON CARBIDE
- CYLINDER DIAMETER:
- 77,00 MM
- PRODUCT NAME:
- CYLINDER
$402.95 -
CYLINDER WORKS Cylinder - Standard - KX250F - 2011-2012 30006
CYLINDER WORKS
$390.95CYLINDER WORKS Cylinder Standard KX250F 2011-2012 30006Ready-to-install, direct bolt-on cylinders require no re-plating and look virtually identical to the OEM cylinders, Nickel Silicon Carbide plated for long life, Big bore cylinders do not require...09310400- SKU:
- 09310400
- Availability:
- Ships Same Business Day
- Weight:
- 2.40 LBS
- STYLE:
- STANDARD
- BORE SIZE METRIC:
- 77.00 MM
- ENGINE TYPE:
- 4-CYCLE
- CYLINDER DIAMETER METRIC:
- 77.00 MM
- UNITS:
- EACH
- CYLINDER DIAMETER:
- 77,00 MM
- PRODUCT NAME:
- CYLINDER
- RIDING STYLE:
- OFF-ROAD
$390.95 -
CYLINDER WORKS Cylinder - Standard - KTM350 SX-F 50001
CYLINDER WORKS
$487.95CYLINDER WORKS Cylinder Standard KTM350 SX-F 50001Ready-to-install, direct bolt-on cylinders require no re-plating and look virtually identical to the OEM cylinders, Nickel Silicon Carbide plated for long life, Big bore cylinders do not require machine...09310403- SKU:
- 09310403
- Availability:
- Ships Same Business Day
- Weight:
- 2.50 LBS
- BORE SIZE METRIC:
- 88.00 MM
- ENGINE TYPE:
- 4-CYCLE
- PRODUCT NAME:
- CYLINDER
- UNITS:
- EACH
- RIDING STYLE:
- OFF-ROAD
- STYLE:
- STANDARD
$487.95
