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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COMETIC Bottom End Gasket Set - Honda C3322
COMETIC
$38.95COMETIC Bottom End Gasket Set Honda C3322Bottom end gasket kits include correct oil seals, O-rings, drain plug washers and water pump cover gaskets as needed, Materials will vary depending on what is correct and engineered for specified application,...09344143- SKU:
- 09344143
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- PRODUCT NAME:
- GASKET KIT
- MODEL:
- HI-PERFORMANCE
- UNITS:
- KIT
- BORE SIZE METRIC:
- 71.00 MM
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- BOTTOM END
$38.95 -
HOT CAMS Camshaft 4019-1
HOT CAMS
$252.95High-performance racing camshafts, Stage 1 and Stage 2 performance camshafts are drop-in cams that are designed to be used with stock valve springs, In most applications, Stage 1 cams deliver more torque and Stage 2 cams provide more peak horsepower,...TTR125S1A- SKU:
- TTR125S1A
- Availability:
- Ships Same Business Day
- Weight:
- 0.70 LBS
- APPLICATION:
- INTAKE
- INTAKE DURATION IMPERIAL:
- 227°
- INTAKE LIFT METRIC:
- 6.80 MM
- APPLICATION:
- EXHAUST
- PRODUCT NAME:
- CAMSHAFT
- EXHAUST DURATION IMPERIAL:
- 223°
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- STAGE 1
- UNITS:
- EACH
- EXHAUST LIFT METRIC:
- 5.90 MM
$252.95 -
HOT CAMS Camshaft 1018-1
HOT CAMS
$226.95High-performance racing camshafts, Stage 1 and Stage 2 performance camshafts are drop-in cams that are designed to be used with stock valve springs, In most applications, Stage 1 cams deliver more torque and Stage 2 cams provide more peak horsepower,...XR100S1A- SKU:
- XR100S1A
- Availability:
- Ships Same Business Day
- Weight:
- 0.70 LBS
- EXHAUST LIFT METRIC:
- 5.90 MM
- TYPE:
- STAGE 1
- APPLICATION:
- EXHAUST
- INTAKE DURATION IMPERIAL:
- 236°
- INTAKE LIFT METRIC:
- 6.80 MM
- PRODUCT NAME:
- CAMSHAFT
- APPLICATION:
- INTAKE
- EXHAUST DURATION IMPERIAL:
- 216°
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
$226.95 -
HOT CAMS Camshaft 1006-1
HOT CAMS
$349.95High-performance racing camshafts, Stage 1 and Stage 2 performance camshafts are drop-in cams that are designed to be used with stock valve springs, In most applications, Stage 1 cams deliver more torque and Stage 2 cams provide more peak horsepower,...XR250S1A- SKU:
- XR250S1A
- Availability:
- Ships Same Business Day
- Weight:
- 1.16 LBS
- INTAKE LIFT METRIC:
- 9.00 MM
- APPLICATION:
- INTAKE
- EXHAUST DURATION IMPERIAL:
- 236°
- TYPE:
- STAGE 1
- UNITS:
- EACH
- APPLICATION:
- EXHAUST
- EXHAUST LIFT METRIC:
- 8.70 MM
- INTAKE DURATION IMPERIAL:
- 236°
- PRODUCT NAME:
- CAMSHAFT
- RIDING STYLE:
- OFF-ROAD
$349.95 -
HOT CAMS Camshaft 1004-1
HOT CAMS
$288.95High-performance racing camshafts, Stage 1 and Stage 2 performance camshafts are drop-in cams that are designed to be used with stock valve springs, In most applications, Stage 1 cams deliver more torque and Stage 2 cams provide more peak horsepower,...XR600S1A- SKU:
- XR600S1A
- Availability:
- Ships Same Business Day
- Weight:
- 1.25 LBS
- INTAKE DURATION IMPERIAL:
- 258°
- RIDING STYLE:
- OFF-ROAD
- APPLICATION:
- INTAKE
- EXHAUST DURATION IMPERIAL:
- 258°
- UNITS:
- EACH
- INTAKE LIFT METRIC:
- 8.80 MM
- PRODUCT NAME:
- CAMSHAFT
- APPLICATION:
- EXHAUST
- EXHAUST LIFT METRIC:
- 8.80 MM
- TYPE:
- STAGE 1
$288.95 -
HOT CAMS Camshaft 2220-2IN
HOT CAMS
$272.95HOT CAMS Camshaft 2220-2INHigh-performance racing camshafts, Stage 1 and Stage 2 performance camshafts are drop-in cams that are designed to be used with stock valve springs, In most applications, Stage 1 cams deliver more torque and Stage 2 cams provide...09250663- SKU:
- 09250663
- Availability:
- Ships Same Business Day
- Weight:
- 0.82 LBS
- PRODUCT NAME:
- CAMSHAFT
- APPLICATION:
- INTAKE
- UNITS:
- EACH
- RIDING STYLE:
- OFF-ROAD
- INTAKE DURATION IMPERIAL:
- 245°
- INTAKE LIFT METRIC:
- 9.65 MM
- TYPE:
- STAGE 2
$272.95 -
HOT CAMS Exhaust Camshaft 2221-2E
HOT CAMS
$297.95HOT CAMS Exhaust Camshaft 2221-2EHigh-performance racing camshafts, In most applications, Stage 1 cams deliver more torque and Stage 2 cams provide more peak horsepower, Select cams feature Hot Cams Improved Throttle Design (ITR) technology; these cams...09250664- SKU:
- 09250664
- Availability:
- Ships Same Business Day
- Weight:
- 1.70 LBS
- PRODUCT NAME:
- CAMSHAFT
- RIDING STYLE:
- OFF-ROAD
- APPLICATION:
- EXHAUST
- EXHAUST DURATION IMPERIAL:
- 245°
- UNITS:
- EACH
- EXHAUST LIFT METRIC:
- 9.65 MM
- TYPE:
- STAGE 2
$297.95 -
HOT CAMS Camshaft 1123-1
HOT CAMS
$403.95HOT CAMS Camshaft 1123-1High-performance racing camshafts, Stage 1 and Stage 2 performance camshafts are drop-in cams that are designed to be used with stock valve springs, In most applications, Stage 1 cams deliver more torque and Stage 2 cams provide...09250459- SKU:
- 09250459
- Availability:
- Ships Same Business Day
- Weight:
- 1.25 LBS
- INTAKE DURATION IMPERIAL:
- 235°
- APPLICATION:
- EXHAUST
- INTAKE LIFT METRIC:
- 9.60 MM
- PRODUCT NAME:
- CAMSHAFT
- TYPE:
- STAGE 1
- UNITS:
- EACH
- APPLICATION:
- INTAKE
- EXHAUST DURATION IMPERIAL:
- 248°
- EXHAUST LIFT METRIC:
- 8.70 MM
- RIDING STYLE:
- OFF-ROAD
$403.95 -
HOT CAMS Camshaft 1125-3
HOT CAMS
$220.95HOT CAMS Camshaft 1125-3High-performance racing camshafts, Stage 1 and Stage 2 performance camshafts are drop-in cams that are designed to be used with stock valve springs, In most applications, Stage 1 cams deliver more torque and Stage 2 cams provide...09250461- SKU:
- 09250461
- Availability:
- Ships Same Business Day
- Weight:
- 1.30 LBS
- APPLICATION:
- INTAKE
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
- INTAKE LIFT METRIC:
- 10.40 MM
- APPLICATION:
- EXHAUST
- EXHAUST LIFT METRIC:
- 9.00 MM
- INTAKE DURATION IMPERIAL:
- 252°
- PRODUCT NAME:
- CAMSHAFT
- TYPE:
- STAGE 3
- EXHAUST DURATION IMPERIAL:
- 265°
$220.95 -
HOT CAMS Cam Chain HC92RH2010120
HOT CAMS
$50.95HOT CAMS Cam Chain HC92RH2010120Silent chain, Exclusive heat-treated links create excellent friction and impact resistance, Engineered to exceed OEM specifications and tolerances09251169- SKU:
- 09251169
- Availability:
- Ships Same Business Day
- Weight:
- 0.40 LBS
- BASE FINISH:
- RAW
- RIDING STYLE:
- STREET
- COLOR/FINISH:
- RAW
- MATERIAL:
- STEEL
- MODEL:
- SILENT
- CHAIN SIZE:
- 92RH2010
- PRODUCT NAME:
- CHAIN
- RIDING STYLE:
- ATV
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- CAM
- UNITS:
- EACH
$50.95 -
HOT CAMS Camshaft 2311-1IN
HOT CAMS
$264.95HOT CAMS Camshaft 2311-1INHigh-performance racing camshafts, Stage 1 and Stage 2 performance camshafts are drop-in cams that are designed to be used with stock valve springs, In most applications, Stage 1 cams deliver more torque and Stage 2 cams provide...09251242- SKU:
- 09251242
- Availability:
- Ships Same Business Day
- Weight:
- 0.85 LBS
- PRODUCT NAME:
- CAMSHAFT
- TYPE:
- STAGE 1
- RIDING STYLE:
- OFF-ROAD
- APPLICATION:
- INTAKE
- INTAKE DURATION IMPERIAL:
- 242°
- INTAKE LIFT METRIC:
- 9.90 MM
- UNITS:
- EACH
$264.95 -
On Sale
HOT CAMS Exhaust Camshaft 2312-E
HOT CAMS
MSRP: $263.95Now: $172.00Was: $268.95HOT CAMS Exhaust Camshaft 2312-EHigh-performance racing camshafts, In most applications, Stage 1 cams deliver more torque and Stage 2 cams provide more peak horsepower, Select cams feature Hot Cams Improved Throttle Design (ITR) technology; these cams...09251243- SKU:
- 09251243
- Availability:
- Ships Same Business Day
- Weight:
- 1.10 LBS
- EXHAUST DURATION IMPERIAL:
- 256°
- PRODUCT NAME:
- CAMSHAFT
- TYPE:
- STAGE 1
- EXHAUST LIFT METRIC:
- 9.65 MM
- APPLICATION:
- EXHAUST
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- STAGE 2
- UNITS:
- EACH
MSRP: $263.95Now: $172.00Was: $268.95Qty in Cart: 0Quantity:Price:MSRP: $263.95Now: $172.00Was: $268.95Subtotal: -
HOT CAMS Valve Shim - 9.48 x 2.55 - 5 pack 5PK948255
HOT CAMS
$9.95HOT CAMS Valve Shim 9.48 x 2.55 5 pack 5PK948255Replacement packs of shims to refill Valve Shim Kits09261399- SKU:
- 09261399
- Availability:
- Ships Same Business Day
- Weight:
- 0.02 LBS
- OUTSIDE DIAMETER METRIC:
- 9.48 MM
- PRODUCT NAME:
- SHIM
- RIDING STYLE:
- SNOW
- RIDING STYLE:
- UTV
- RIDING STYLE:
- WATERCRAFT
- TYPE:
- VALVE
- UNITS:
- 5 PACK
- VALVE SHIM THICKNESS METRIC:
- 2.55 MM
- RIDING STYLE:
- ATV
- RIDING STYLE:
- STREET
- MATERIAL:
- STEEL
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- OFF-ROAD
$9.95 -
HOT CAMS Valve Shim - 9.48 x 2.60 - 5 pack 5PK948260
HOT CAMS
$9.95HOT CAMS Valve Shim 9.48 x 2.60 5 pack 5PK948260Replacement packs of shims to refill Valve Shim Kits09261400- SKU:
- 09261400
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- OUTSIDE DIAMETER METRIC:
- 9.48 MM
- RIDING STYLE:
- SNOW
- RIDING STYLE:
- STREET
- UNITS:
- 5 PACK
- VALVE SHIM THICKNESS METRIC:
- 2.60 MM
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- ATV
- PRODUCT NAME:
- SHIM
- RIDING STYLE:
- UTV
- RIDING STYLE:
- WATERCRAFT
- TYPE:
- VALVE
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
$9.95 -
HOT CAMS Valve Shim - 9.48 x 2.85 - 5 pack 5PK948285
HOT CAMS
$9.95HOT CAMS Valve Shim 9.48 x 2.85 5 pack 5PK948285Replacement packs of shims to refill Valve Shim Kits09261405- SKU:
- 09261405
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- RIDING STYLE:
- ATV
- TYPE:
- VALVE
- MATERIAL:
- STEEL
- OUTSIDE DIAMETER METRIC:
- 9.48 MM
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- OFF-ROAD
- RIDING STYLE:
- SNOW
- PRODUCT NAME:
- SHIM
- RIDING STYLE:
- STREET
- RIDING STYLE:
- UTV
- RIDING STYLE:
- WATERCRAFT
- UNITS:
- 5 PACK
- VALVE SHIM THICKNESS METRIC:
- 2.85 MM
$9.95 -
HOT CAMS Valve Shim - 9.48 x 2.90 - 5 pack 5PK948290
HOT CAMS
$9.95HOT CAMS Valve Shim 9.48 x 2.90 5 pack 5PK948290Replacement packs of shims to refill Valve Shim Kits09261406- SKU:
- 09261406
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- RIDING STYLE:
- ATV
- TYPE:
- VALVE
- RIDING STYLE:
- UTV
- MATERIAL:
- STEEL
- OUTSIDE DIAMETER METRIC:
- 9.48 MM
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- OFF-ROAD
- PRODUCT NAME:
- SHIM
- RIDING STYLE:
- SNOW
- RIDING STYLE:
- STREET
- RIDING STYLE:
- WATERCRAFT
- UNITS:
- 5 PACK
- VALVE SHIM THICKNESS METRIC:
- 2.90 MM
$9.95 -
HOT CAMS Valve Shim - 9.48 x 2.95 - 5 pack 5PK948295
HOT CAMS
$9.95HOT CAMS Valve Shim 9.48 x 2.95 5 pack 5PK948295Replacement packs of shims to refill Valve Shim Kits09261407- SKU:
- 09261407
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- MATERIAL:
- STEEL
- VALVE SHIM THICKNESS METRIC:
- 2.95 MM
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- ATV
- RIDING STYLE:
- OFF-ROAD
- RIDING STYLE:
- UTV
- RIDING STYLE:
- WATERCRAFT
- TYPE:
- VALVE
- OUTSIDE DIAMETER METRIC:
- 9.48 MM
- PRODUCT NAME:
- SHIM
- RIDING STYLE:
- SNOW
- RIDING STYLE:
- STREET
- UNITS:
- 5 PACK
$9.95 -
PROX Piston Kit 01.1408.150
PROX
$185.95PROX Piston Kit 01.1408.150Manufactured in Japan and designed to be OEM replacement, Cast from a high-silicon-content aluminum alloy that meets or exceeds OEM specifications, then CNC-machined to extremely close tolerances, Pistons supplied in a kit...09030820- SKU:
- 09030820
- Availability:
- Ships Same Business Day
- Weight:
- 1.34 LBS
- PISTON SIZE METRIC:
- +1.50 MM
- BORE SIZE METRIC:
- 90.50 MM
- ENGINE TYPE:
- 2-STROKE
- PISTON MATERIAL:
- ALUMINUM ALLOY
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- TOP END
- UNITS:
- EACH
- PRODUCT NAME:
- PISTON KIT
$185.95 -
PROX Piston Kit 01.1408.200
PROX
$185.95PROX Piston Kit 01.1408.200Manufactured in Japan and designed to be OEM replacement, Cast from a high-silicon-content aluminum alloy that meets or exceeds OEM specifications, then CNC-machined to extremely close tolerances, Pistons supplied in a kit...09030821- SKU:
- 09030821
- Availability:
- Ships Same Business Day
- Weight:
- 1.35 LBS
- RIDING STYLE:
- OFF-ROAD
- BORE SIZE METRIC:
- 91.00 MM
- PISTON MATERIAL:
- ALUMINUM ALLOY
- PISTON SIZE METRIC:
- +2.00 MM
- TYPE:
- TOP END
- UNITS:
- EACH
- ENGINE TYPE:
- 2-STROKE
- PRODUCT NAME:
- PISTON KIT
$185.95 -
On Sale
UFO Clutch Cover - Orange - KTM AC02411
UFO
MSRP: $31.95Now: $20.00Was: $31.95UFO Clutch Cover Orange KTM AC02411Constructed of abrasion/temperature-resistant PA6 plastic to give optimum protection against impacts, Perfect fit to the stock clutch cover (will not fit with aftermarket covers), Slim design to minimize interference...09401589- SKU:
- 09401589
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
- RIDING STYLE:
- STREET
- UNITS:
- EACH
- MATERIAL:
- PLASTIC
- PRODUCT NAME:
- COVER
- COLOR/FINISH:
- ORANGE
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- CLUTCH
MSRP: $31.95Now: $20.00Was: $31.95
