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
- Product
- Qty in Cart
- Quantity
- Price
- Subtotal
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KIBBLEWHITE Exhaust Valve - Yamaha 80-80766T
KIBBLEWHITE
$109.33KIBBLEWHITE Exhaust Valve Yamaha 80-80766TTensilite® valves are CNC machined from one-piece forgings of 6AL4V or 6-2-4-2 titanium alloy, Finished with a CrN PVD coating that has a low coefficient of friction, and is impact, abrasion, and corrosion...9262769- SKU:
- 9262769
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- APPLICATION:
- EXHAUST
- STEM DIAMETER IMPERIAL:
- 0.2155'
- PRODUCT NAME:
- VALVE
- RIDING STYLE:
- OFF-ROAD
- TULIP ANGLE:
- 20°
- HEAD DIAMETER METRIC:
- 30.00 MM
- MATERIAL:
- TITANIUM
- MODEL:
- TENSILITE®
- UNITS:
- EACH
$109.33 -
KIBBLEWHITE Intake Valve - Yamaha 80-80872T
KIBBLEWHITE
$109.33KIBBLEWHITE Intake Valve Yamaha 80-80872TTensilite® valves are CNC machined from one-piece forgings of 6AL4V or 6-2-4-2 titanium alloy, Finished with a CrN PVD coating that has a low coefficient of friction, and is impact, abrasion, and corrosion...9262770- SKU:
- 9262770
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- APPLICATION:
- INTAKE
- HEAD DIAMETER METRIC:
- 37.00 MM
- RIDING STYLE:
- OFF-ROAD
- MODEL:
- TENSILITE®
- TULIP ANGLE:
- 18°
- MATERIAL:
- TITANIUM
- STEM DIAMETER IMPERIAL:
- 0.2160'
- UNITS:
- EACH
- PRODUCT NAME:
- VALVE
$109.33 -
KIBBLEWHITE Exhaust Valve Guide 96-96430
KIBBLEWHITE
$22.95KIBBLEWHITE Exhaust Valve Guide 96-96430All 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.9262711- SKU:
- 9262711
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- MATERIAL:
- BRONZE
- OUTSIDE DIAMETER IMPERIAL:
- 0.4352'
- RIDING STYLE:
- OFF-ROAD
- SIZE IMPERIAL:
- STANDARD
- INSIDE DIAMETER IMPERIAL:
- 0.1955'
- MATERIAL:
- AMPCO-45
- PRODUCT NAME:
- VALVE GUIDE
- UNITS:
- EACH
- APPLICATION:
- EXHAUST
- MATERIAL:
- NICKEL
- MATERIAL:
- STAINLESS STEEL
$22.95 -
KIBBLEWHITE Intake Valve Kit 96-96480
KIBBLEWHITE
$260.95KIBBLEWHITE Intake Valve Kit 96-96480Stainless steel conversion kit includes only what's needed to convert your head to the long-life stainless steel Black Diamond intake valves, Extends the life of the valvetrain and intake components by as much as 4x...9262713- SKU:
- 9262713
- Availability:
- Ships Same Business Day
- Weight:
- 0.50 LBS
$260.95Qty in Cart: 0Quantity:Price:$260.95Subtotal: -
KIBBLEWHITE Valve Guide Seal - Intake/Exhaust 71040-4
KIBBLEWHITE
$15.95KIBBLEWHITE Valve Guide Seal Intake/Exhaust 71040-4Viton intake/exhaust seals, Made in the U.S.A.9263100- SKU:
- 9263100
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- APPLICATION:
- EXHAUST
- PRODUCT NAME:
- SEAL
- STEM DIAMETER IMPERIAL:
- 0.333'
- OUTSIDE DIAMETER IMPERIAL:
- 0.4550'
- RIDING STYLE:
- OFF-ROAD
- APPLICATION:
- INTAKE
- TYPE:
- VALVE GUIDE
- MATERIAL:
- VITON
- UNITS:
- 4 PACK
$15.95 -
KIBBLEWHITE Cylinder Head Service Kit 80-82400
KIBBLEWHITE
$556.95KIBBLEWHITE Cylinder Head Service Kit 80-82400Kits contain all items to completely refresh and upgrade cylinder heads for popular Dirt/MX and Side x Side models, Cylinder Head Service Kits include the below components:, Lightweight Racing Valve Spring...9263233- SKU:
- 9263233
- Availability:
- Ships Same Business Day
- Weight:
- 0.85 LBS
- MATERIAL:
- C630 BRONZE
- MATERIAL:
- TITANIUM
- MODEL:
- BLACK DIAMOND™
- RIDING STYLE:
- STREET
- APPLICATION:
- INTAKE
- SPRING LIFT IMPERIAL:
- 0.380'
- APPLICATION:
- EXHAUST
- PRODUCT NAME:
- CYLINDER HEAD SERVICE KIT
- SPRING LIFT:
- 0,380'
- SPRING SEAT PRESSURE:
- 39 LB
- RIDING STYLE:
- OFF-ROAD
- SPRING OPEN PRESSURE:
- 86 LB
- UNITS:
- KIT
$556.95 -
KIBBLEWHITE Valve Spring Kit 80-80206
KIBBLEWHITE
$339.95KIBBLEWHITE 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...9260095- SKU:
- 9260095
- 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
$339.95 -
KIBBLEWHITE Intake Valve Guide 80-80220
KIBBLEWHITE
$15.95KIBBLEWHITE 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.9260096- SKU:
- 9260096
- 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
$15.95 -
KIBBLEWHITE Exhaust Valve Guide 80-80230
KIBBLEWHITE
$15.95KIBBLEWHITE 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.9260101- SKU:
- 9260101
- 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
$15.95 -
KIBBLEWHITE Intake Valve 80-80213H
KIBBLEWHITE
$40.95KIBBLEWHITE 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.9260106- SKU:
- 9260106
- 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°
$40.95 -
K&S TECHNOLOGIES Water Pump Repair Gasket Kit - CRF450R 75-1001
K&S TECHNOLOGIES
$36.95K&S TECHNOLOGIES Water Pump Repair Gasket Kit CRF450R 75-1001Each kit includes all necessary gaskets, washers, seals and O-rings; kit contents vary by model9341909- SKU:
- 9341909
- Availability:
- Ships Same Business Day
- Weight:
- 0.21 LBS
- TYPE:
- WATER PUMP REPAIR
- UNITS:
- KIT
- PRODUCT NAME:
- GASKET KIT
- RIDING STYLE:
- OFF-ROAD
$36.95 -
K&S TECHNOLOGIES Water Pump Repair Gasket Kit - CRF250R 75-1002
K&S TECHNOLOGIES
$36.95K&S TECHNOLOGIES Water Pump Repair Gasket Kit CRF250R 75-1002Each kit includes all necessary gaskets, washers, seals and O-rings; kit contents vary by model9341910- SKU:
- 9341910
- Availability:
- Ships Same Business Day
- Weight:
- 0.21 LBS
- UNITS:
- KIT
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- WATER PUMP REPAIR
- PRODUCT NAME:
- GASKET KIT
$36.95 -
K&S TECHNOLOGIES Water Pump Repair Gasket Kit - CR250R 75-1005
K&S TECHNOLOGIES
$32.95K&S TECHNOLOGIES Water Pump Repair Gasket Kit CR250R 75-1005Each kit includes all necessary gaskets, washers, seals and O-rings; kit contents vary by model9341913- SKU:
- 9341913
- Availability:
- Ships Same Business Day
- Weight:
- 0.21 LBS
- PRODUCT NAME:
- GASKET KIT
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- WATER PUMP REPAIR
- UNITS:
- KIT
$32.95Qty in Cart: 0Quantity:Price:$32.95Subtotal: -
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 model9342878- SKU:
- 9342878
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- PRODUCT NAME:
- GASKET KIT
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- WATER PUMP REPAIR
- UNITS:
- KIT
$34.95 -
On Sale
CYLINDER WORKS Gasket Kit - Big Bore 51007-G01
CYLINDER WORKS
MSRP: $122.95Now: $112.46Was: $124.95CYLINDER WORKS Gasket Kit Big Bore 51007-G01Made in the U.S.A.9346006- SKU:
- 9346006
- 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
MSRP: $122.95Now: $112.46Was: $124.95 -
On Sale
CYLINDER WORKS Gasket Kit - Big Bore 31012-G01
CYLINDER WORKS
MSRP: $96.95Now: $87.26Was: $96.95CYLINDER WORKS Gasket Kit Big Bore 31012-G01Made in the U.S.A.9346007- SKU:
- 9346007
- Availability:
- Ships Same Business Day
- Weight:
- 1.15 LBS
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- CYLINDER
- UNITS:
- KIT
- PRODUCT NAME:
- GASKET KIT
- BORE SIZE IMPERIAL:
- OVERSIZE (+3.00 MM)
MSRP: $96.95Now: $87.26Was: $96.95Qty in Cart: 0Quantity:Price:MSRP: $96.95Now: $87.26Was: $96.95Subtotal: -
On Sale
CYLINDER WORKS Cylinder Kit - Big Bore CW51008K01
CYLINDER WORKS
MSRP: $783.95Now: $719.96Was: $799.95CYLINDER 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...9310967- SKU:
- 9310967
- 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
MSRP: $783.95Now: $719.96Was: $799.95 -
On Sale
CYLINDER WORKS Cylinder - Standard 10008
CYLINDER WORKS
MSRP: $344.95Now: $316.76Was: $351.95CYLINDER 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.9311013- SKU:
- 9311013
- 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
MSRP: $344.95Now: $316.76Was: $351.95 -
On Sale
CYLINDER WORKS Cylinder - Standard 50005
CYLINDER WORKS
MSRP: $517.95Now: $475.16Was: $527.95CYLINDER 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.9311015- SKU:
- 9311015
- 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
MSRP: $517.95Now: $475.16Was: $527.95 -
On Sale
CYLINDER WORKS Cylinder Head Kit - Standard Bore CH3001-K01
CYLINDER WORKS
MSRP: $549.95Now: $504.86Was: $560.95CYLINDER 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...9311018- SKU:
- 9311018
- Availability:
- Ships Same Business Day
- Weight:
- 5.50 LBS
- PRODUCT NAME:
- CYLINDER KIT
- STYLE:
- STANDARD
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
MSRP: $549.95Now: $504.86Was: $560.95
