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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- Qty in Cart
- Quantity
- Price
- Subtotal
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LA SLEEVE Cylinder Sleeve KA5451
LA SLEEVE
$149.95LA SLEEVE Cylinder Sleeve KA5451Quality replacement cylinder sleeves give old cylinders new lifeKA5451- SKU:
- KA5451
- Availability:
- Ships Same Business Day
- Weight:
- 0.75 LBS
- BORE SIZE METRIC:
- 54.00 MM
- COLOR/FINISH:
- CHROME
- RIDING STYLE:
- OFF-ROAD
- PRODUCT NAME:
- CYLINDER SLEEVE
- UNITS:
- EACH
- CYLINDER BORE COATING:
- CHROME-MOLY ALLOY
- TYPE:
- AC
$149.95 -
LA SLEEVE Cylinder Sleeve KA5471
LA SLEEVE
MSRP: $171.95$168.95LA SLEEVE Cylinder Sleeve KA5471Quality replacement cylinder sleeves give old cylinders new lifeKA5471- SKU:
- KA5471
- Availability:
- Ships Same Business Day
- Weight:
- 1.42 LBS
- COLOR/FINISH:
- CHROME
- RIDING STYLE:
- OFF-ROAD
- BORE SIZE METRIC:
- 66.40 MM
- PRODUCT NAME:
- CYLINDER SLEEVE
- UNITS:
- EACH
- CYLINDER BORE COATING:
- CHROME-MOLY ALLOY
- TYPE:
- AC
MSRP: $171.95$168.95 -
LA SLEEVE Cylinder Sleeve KA5473
LA SLEEVE
$149.95LA SLEEVE Cylinder Sleeve KA5473Quality replacement cylinder sleeves give old cylinders new lifeKA5473- SKU:
- KA5473
- Availability:
- Ships Same Business Day
- Weight:
- 0.68 LBS
- CYLINDER BORE COATING:
- CHROME-MOLY ALLOY
- PRODUCT NAME:
- CYLINDER SLEEVE
- TYPE:
- AC
- BORE SIZE METRIC:
- 54.00 MM
- COLOR/FINISH:
- CHROME
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
$149.95 -
LA SLEEVE Cylinder Sleeve H5448
LA SLEEVE
MSRP: $171.95$168.95LA SLEEVE Cylinder Sleeve H5448Quality replacement cylinder sleeves give old cylinders new lifeH5448- SKU:
- H5448
- Availability:
- Ships Same Business Day
- Weight:
- 1.45 LBS
- CYLINDER BORE COATING:
- CHROME-MOLY ALLOY
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- AC
- BORE SIZE METRIC:
- 66.40 MM
- COLOR/FINISH:
- CHROME
- PRODUCT NAME:
- CYLINDER SLEEVE
- UNITS:
- EACH
MSRP: $171.95$168.95 -
LA SLEEVE Cylinder Sleeve H5450
LA SLEEVE
$149.95LA SLEEVE Cylinder Sleeve H5450Quality replacement cylinder sleeves give old cylinders new lifeH5450- SKU:
- H5450
- Availability:
- Ships Same Business Day
- Weight:
- 0.74 LBS
- COLOR/FINISH:
- CHROME
- PRODUCT NAME:
- CYLINDER SLEEVE
- UNITS:
- EACH
- BORE SIZE METRIC:
- 54.00 MM
- CYLINDER BORE COATING:
- CHROME-MOLY ALLOY
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- AC
$149.95 -
LA SLEEVE Cylinder Sleeve H5466
LA SLEEVE
$149.95LA SLEEVE Cylinder Sleeve H5466Quality replacement cylinder sleeves give old cylinders new lifeH5466- SKU:
- H5466
- Availability:
- Ships Same Business Day
- Weight:
- 0.74 LBS
- BORE SIZE METRIC:
- 54.00 MM
- COLOR/FINISH:
- CHROME
- RIDING STYLE:
- OFF-ROAD
- PRODUCT NAME:
- CYLINDER SLEEVE
- UNITS:
- EACH
- CYLINDER BORE COATING:
- CHROME-MOLY ALLOY
- TYPE:
- AC
$149.95 -
LA SLEEVE Cylinder Sleeve H5477
LA SLEEVE
MSRP: $171.95$168.95LA SLEEVE Cylinder Sleeve H5477Quality replacement cylinder sleeves give old cylinders new lifeH5477- SKU:
- H5477
- Availability:
- Ships Same Business Day
- Weight:
- 1.14 LBS
- COLOR/FINISH:
- CHROME
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
- BORE SIZE METRIC:
- 66.40 MM
- CYLINDER BORE COATING:
- CHROME-MOLY ALLOY
- PRODUCT NAME:
- CYLINDER SLEEVE
- TYPE:
- AC
MSRP: $171.95$168.95 -
KIBBLEWHITE Spring Kit 30-30015
KIBBLEWHITE
$167.95KIBBLEWHITE Spring Kit 30-30015Spring kits contain springs and titanium upper collars; lower collars included as required; spring kits are engineered for use with standard and oversized valves, Spring kits come complete for one motor, Keepers are not...KW3030015- SKU:
- KW3030015
- Availability:
- Ships Same Business Day
- Weight:
- 0.50 LBS
- APPLICATION:
- EXHAUST
- PRODUCT NAME:
- SPRING KIT
- SPRING OPEN PRESSURE:
- 185 LB
- TYPE:
- VALVE
- APPLICATION:
- INTAKE
- RIDING STYLE:
- OFF-ROAD
- MATERIAL:
- TITANIUM
- SPRING LIFT IMPERIAL:
- 0.400'
- UNITS:
- KIT
$167.95 -
KIBBLEWHITE Intake Valve 30-3003
KIBBLEWHITE
$40.95KIBBLEWHITE Intake Valve 30-3003Black Diamond™ valves are CNC machined from one-piece forgings of EV8 Stainless Steel, Black Diamond™ proprietary multi-stage process reduces friction, and provides superior resistance to corrosion and wear, Made in the U...KW303003- SKU:
- KW303003
- Availability:
- Ships Same Business Day
- Weight:
- 0.13 LBS
- HEAD DIAMETER METRIC:
- 36.00 MM
- LENGTH IMPERIAL:
- 4.165'
- MODEL:
- BLACK DIAMOND™
- TULIP ANGLE:
- 23°
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
- APPLICATION:
- INTAKE
- PRODUCT NAME:
- VALVE
- STEM DIAMETER IMPERIAL:
- 0.2590'
$40.95 -
KIBBLEWHITE Exhaust Valve 30-3004
KIBBLEWHITE
$40.95KIBBLEWHITE Exhaust Valve 30-3004Black Diamond™ valves are CNC machined from one-piece forgings of EV8 Stainless Steel, Black Diamond™ proprietary multi-stage process reduces friction, and provides superior resistance to corrosion and wear, Made in the U...KW303004- SKU:
- KW303004
- Availability:
- Ships Same Business Day
- Weight:
- 0.13 LBS
- MATERIAL:
- STEEL
- PRODUCT NAME:
- VALVE
- STEM DIAMETER IMPERIAL:
- 0.2585'
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
- APPLICATION:
- EXHAUST
- HEAD DIAMETER METRIC:
- 31.00 MM
- LENGTH IMPERIAL:
- 4.095'
- MODEL:
- BLACK DIAMOND™
- TULIP ANGLE:
- 29°
$40.95Qty in Cart: 0Quantity:Price:$40.95Subtotal: -
KIBBLEWHITE Intake Valve 30-30073
KIBBLEWHITE
$54.95KIBBLEWHITE Intake Valve 30-30073Black Diamond™ valves are CNC machined from one-piece forgings of EV8 Stainless Steel, Black Diamond™ proprietary multi-stage process reduces friction, and provides superior resistance to corrosion and wear, Made in the U...KW3030073- SKU:
- KW3030073
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- HEAD DIAMETER METRIC:
- 28.50 MM
- RIDING STYLE:
- OFF-ROAD
- STEM DIAMETER IMPERIAL:
- 0.1960'
- APPLICATION:
- INTAKE
- MODEL:
- BLACK DIAMOND™
- LENGTH IMPERIAL:
- 3.805'
- MATERIAL:
- STEEL
- PRODUCT NAME:
- VALVE
- TULIP ANGLE:
- 23°
- UNITS:
- EACH
$54.95 -
KIBBLEWHITE Spring Kit 30-30077
KIBBLEWHITE
$139.95KIBBLEWHITE Spring Kit 30-30077Spring kits contain springs and titanium upper collars; lower collars included as required; spring kits are engineered for use with standard and oversized valves, Spring kits come complete for one motor, Keepers are not...KW3030077- SKU:
- KW3030077
- Availability:
- Ships Same Business Day
- Weight:
- 0.38 LBS
- APPLICATION:
- INTAKE
- PRODUCT NAME:
- SPRING KIT
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- APPLICATION:
- EXHAUST
- SPRING LIFT IMPERIAL:
- 0.355'
- SPRING OPEN PRESSURE:
- 150 LB
- TYPE:
- VALVE
- MATERIAL:
- TITANIUM
$139.95 -
KIBBLEWHITE Exhaust Valve 30-30083
KIBBLEWHITE
$57.95KIBBLEWHITE Exhaust Valve 30-30083Black Diamond™ valves are CNC machined from one-piece forgings of EV8 Stainless Steel, Black Diamond™ proprietary multi-stage process reduces friction, and provides superior resistance to corrosion and wear, Made in the...KW3030083- SKU:
- KW3030083
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- LENGTH IMPERIAL:
- 3.775'
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
- HEAD DIAMETER METRIC:
- 23.50 MM
- UNITS:
- EACH
- APPLICATION:
- EXHAUST
- PRODUCT NAME:
- VALVE
- MODEL:
- BLACK DIAMOND™
- STEM DIAMETER IMPERIAL:
- 0.2155'
- TULIP ANGLE:
- 29°
$57.95 -
KIBBLEWHITE Cast Iron Valve Seat 10-SC320
KIBBLEWHITE
MSRP: $8.95$8.62KIBBLEWHITE Cast Iron Valve Seat 10-SC320Premium valve seats for applications using steel valves, A specific combination of alloys allowed a creation of a high density, iron-based valve seat with uniform hardness, exceptional thermal qualities and high...09261633- SKU:
- 09261633
- Availability:
- Ships Same Business Day
- Weight:
- 0.06 LBS
- INSIDE DIAMETER METRIC:
- 24.00 MM
- PRODUCT NAME:
- VALVE SEAT
- RIDING STYLE:
- ATV
- UNITS:
- EACH
- HEAD DIAMETER METRIC:
- 32.00 MM
- OUTSIDE DIAMETER METRIC:
- 32.00 MM
- APPLICATION:
- INTAKE
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
- VALVE SEAT HEIGHT METRIC:
- 9.50 MM
MSRP: $8.95$8.62 -
KIBBLEWHITE Cast Iron Valve Seat 10-SC330
KIBBLEWHITE
MSRP: $8.95$8.75KIBBLEWHITE Cast Iron Valve Seat 10-SC330Premium valve seats for applications using steel valves, A specific combination of alloys allowed a creation of a high density, iron-based valve seat with uniform hardness, exceptional thermal qualities and high...09261634- SKU:
- 09261634
- Availability:
- Ships Same Business Day
- Weight:
- 0.06 LBS
- HEAD DIAMETER METRIC:
- 33.00 MM
- INSIDE DIAMETER METRIC:
- 24.00 MM
- APPLICATION:
- EXHAUST
- OUTSIDE DIAMETER METRIC:
- 33.00 MM
- PRODUCT NAME:
- VALVE SEAT
- UNITS:
- EACH
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
- VALVE SEAT HEIGHT METRIC:
- 9.50 MM
MSRP: $8.95$8.75 -
KIBBLEWHITE Cast Iron Valve Seat 10-SC340
KIBBLEWHITE
MSRP: $9.95$8.89KIBBLEWHITE Cast Iron Valve Seat 10-SC340Premium valve seats for applications using steel valves, A specific combination of alloys allowed a creation of a high density, iron-based valve seat with uniform hardness, exceptional thermal qualities and high...09261635- SKU:
- 09261635
- Availability:
- Ships Same Business Day
- Weight:
- 0.06 LBS
- APPLICATION:
- EXHAUST
- UNITS:
- EACH
- OUTSIDE DIAMETER METRIC:
- 34.00 MM
- PRODUCT NAME:
- VALVE SEAT
- INSIDE DIAMETER METRIC:
- 26.00 MM
- MATERIAL:
- STEEL
- HEAD DIAMETER METRIC:
- 34.00 MM
- RIDING STYLE:
- OFF-ROAD
- VALVE SEAT HEIGHT METRIC:
- 9.50 MM
MSRP: $9.95$8.89 -
KIBBLEWHITE Intake Valve 30-30221
KIBBLEWHITE
$33.95KIBBLEWHITE Intake Valve 30-30221Black Diamond™ valves are CNC machined from one-piece forgings of EV8 Stainless Steel, Black Diamond™ proprietary multi-stage process reduces friction, and provides superior resistance to corrosion and wear, Made in the U...20080221- SKU:
- 20080221
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- LENGTH IMPERIAL:
- 3.325'
- MODEL:
- BLACK DIAMOND™
- PRODUCT NAME:
- VALVE
- APPLICATION:
- INTAKE
- STEM DIAMETER IMPERIAL:
- 0.2158'
- UNITS:
- EACH
- HEAD DIAMETER METRIC:
- 37.00 MM
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
- TULIP ANGLE:
- 20°
$33.95 -
KIBBLEWHITE Exhaust Valve 30-30223
KIBBLEWHITE
$33.95KIBBLEWHITE Exhaust Valve 30-30223Black Diamond™ valves are CNC machined from one-piece forgings of EV8 Stainless Steel, Black Diamond™ proprietary multi-stage process reduces friction, and provides superior resistance to corrosion and wear, Made in the...20080223- SKU:
- 20080223
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- HEAD DIAMETER METRIC:
- 31.00 MM
- LENGTH IMPERIAL:
- 3.310'
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
- STEM DIAMETER IMPERIAL:
- 0.1957'
- TULIP ANGLE:
- 20°
- APPLICATION:
- EXHAUST
- PRODUCT NAME:
- VALVE
- UNITS:
- EACH
- MODEL:
- BLACK DIAMOND™
$33.95 -
KIBBLEWHITE Spring Kit 40-40100
KIBBLEWHITE
MSRP: $234.95$220.26KIBBLEWHITE Spring Kit 40-40100Spring kits contain springs and titanium upper collars; lower collars included as required; spring kits are engineered for use with standard and oversized valves, Spring kits come complete for one motor, Keepers are not...09260167- SKU:
- 09260167
- Availability:
- Ships Same Business Day
- Weight:
- 0.34 LBS
- APPLICATION:
- INTAKE
- RIDING STYLE:
- OFF-ROAD
- SPRING OPEN PRESSURE:
- 155 LB
- TYPE:
- VALVE
- MATERIAL:
- TITANIUM
- PRODUCT NAME:
- SPRING KIT
- UNITS:
- KIT
- APPLICATION:
- EXHAUST
- SPRING LIFT IMPERIAL:
- 0.445'
MSRP: $234.95$220.26 -
KIBBLEWHITE Valve Guide 40-40120
KIBBLEWHITE
MSRP: $32.95$17.70KIBBLEWHITE Valve Guide 40-40120All 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.09260168- SKU:
- 09260168
- Availability:
- Ships Same Business Day
- Weight:
- 0.03 LBS
- UNITS:
- EACH
- APPLICATION:
- EXHAUST
- INSIDE DIAMETER IMPERIAL:
- 0.1760'
- SIZE IMPERIAL:
- STANDARD
- RIDING STYLE:
- OFF-ROAD
- MATERIAL:
- C630 BRONZE
- OUTSIDE DIAMETER IMPERIAL:
- 0.3765'
- PRODUCT NAME:
- VALVE GUIDE
MSRP: $32.95$17.70
