Dirt Bike Engine
Dirt Bike Engine Parts at JJ Motorsports
Discover a full range of dirt bike engine components for rebuilding or upgrading your performance from JJ Motorsports. 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 to keep your engine running at peak efficiency on the track or trails.
Shop trusted brands like Wiseco for forged piston kits and K&N for high-flow oil filters. Explore related categories such as Dirt Bike Air and Fuel for intake upgrades or Dirt Bike Exhaust for complete systems.
Browse our in-stock inventory below with same-day shipping and expert support. Questions? Contact us for fitment advice!
- Product
- Qty in Cart
- Quantity
- Price
- Subtotal
-
Hot Cams Valve Shim 10.0 x 2.35 for KTM 690 Enduro 2008 5PK1000235
HOT CAMS
$11.95Valve clearance drift is inevitable with engine wear, and running out-of-spec shims compromises both performance and longevity. The Hot Cams Valve Shim 10.0 x 2.35 gives you precision-engineered replacements to restore exact valve timing on your KTM 690...09261284- SKU:
- 09261284
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- OUTSIDE DIAMETER METRIC:
- 10.00 MM
- VALVE SHIM THICKNESS METRIC:
- 2.35 MM
- PRODUCT NAME:
- SHIM
- TYPE:
- VALVE
- UNITS:
- 5 PACK
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
$11.95 -
Hot Cams Valve Shim 10.00mm x 3.10mm for KTM 530 EXC-R 2008-2010 5PK1000310
HOT CAMS
$11.95Valve clearance directly impacts combustion efficiency, fuel economy, and engine longevity—and this Hot Cams shim kit gives you precise adjustment capability without guesswork. Whether you're dialing in a freshly rebuilt top-end or fine-tuning an...09261299- SKU:
- 09261299
- Availability:
- Ships Same Business Day
- Weight:
- 0.02 LBS
- OUTSIDE DIAMETER METRIC:
- 10.00 MM
- PRODUCT NAME:
- SHIM
- TYPE:
- VALVE
- UNITS:
- 5 PACK
- VALVE SHIM THICKNESS METRIC:
- 3.10 MM
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
$11.95 -
Hot Cams Valve Shim 10.0 x 3.15 for KTM 530 EXC-R 2008-2010 5PK1000315
HOT CAMS
$11.95Valve clearance directly impacts your KTM 530 EXC-R's combustion efficiency, fuel economy, and engine longevity. Over time, thermal cycling causes valve seats to settle, requiring shim adjustments to maintain factory specifications. This genuine Hot Cams...09261300- SKU:
- 09261300
- Availability:
- Ships Same Business Day
- Weight:
- 0.02 LBS
- TYPE:
- VALVE
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
- OUTSIDE DIAMETER METRIC:
- 10.00 MM
- PRODUCT NAME:
- SHIM
- UNITS:
- 5 PACK
- VALVE SHIM THICKNESS METRIC:
- 3.15 MM
$11.95 -
Hot Cams Valve Shim 7.48mm x 1.25mm for Honda Kawasaki Suzuki Yamaha 5PK748125
HOT CAMS
$10.95Valve clearance directly impacts engine efficiency, fuel economy, and longevity—and worn or incorrect shims compromise all three. The HOT CAMS 7.48mm x 1.25mm valve shim pack gives you five precision replacements to maintain proper valve train geometry...09261303- SKU:
- 09261303
- Availability:
- Ships Same Business Day
- Weight:
- 0.06 LBS
- RIDING STYLE:
- OFF-ROAD
- MATERIAL:
- STEEL
- PRODUCT NAME:
- SHIM
- UNITS:
- 5 PACK
- VALVE SHIM THICKNESS METRIC:
- 1.25 MM
- OUTSIDE DIAMETER METRIC:
- 7.48 MM
- RIDING STYLE:
- STREET
- TYPE:
- VALVE
$10.95Qty in Cart: 0Quantity:Price:$10.95Subtotal: -
Hot Cams Valve Shim 7.48mm x 2.00mm for Honda CRF150R 2007-2022 5PK748200
HOT CAMS
$10.95Valve clearance directly impacts combustion efficiency, valve longevity, and overall engine reliability—and worn or incorrect shims compromise all three. The Hot Cams Valve Shim pack delivers precision-engineered replacements that restore proper...09261318- SKU:
- 09261318
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- MATERIAL:
- STEEL
- TYPE:
- VALVE
- RIDING STYLE:
- OFF-ROAD
- VALVE SHIM THICKNESS METRIC:
- 2.00 MM
- OUTSIDE DIAMETER METRIC:
- 7.48 MM
- PRODUCT NAME:
- SHIM
- RIDING STYLE:
- STREET
- UNITS:
- 5 PACK
$10.95 -
Hot Cams Valve Shim 7.48mm x 2.05mm for Honda CRF150R 2007-2016 5PK748205
HOT CAMS
$10.95Proper valve clearance is critical to engine performance, fuel efficiency, and longevity—too tight and you risk valve float or damage, too loose and you lose power and increase wear. The Hot Cams Valve Shim 7.48mm x 2.05mm is precision-engineered to...09261319- SKU:
- 09261319
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
- VALVE SHIM THICKNESS METRIC:
- 2.05 MM
- OUTSIDE DIAMETER METRIC:
- 7.48 MM
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- SHIM
- TYPE:
- VALVE
- UNITS:
- 5 PACK
$10.95 -
Hot Cams Valve Shim 7.48mm x 2.20mm for Honda CRF 150R 2007-2018 5PK748220
HOT CAMS
$10.95Valve clearance directly impacts your CRF 150R's combustion efficiency, fuel economy, and component longevity—and worn or incorrect shims compromise all three. Hot Cams valve shims are precision-engineered to OEM tolerances, ensuring your engine...09261322- SKU:
- 09261322
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- PRODUCT NAME:
- SHIM
- TYPE:
- VALVE
- UNITS:
- 5 PACK
- OUTSIDE DIAMETER METRIC:
- 7.48 MM
- RIDING STYLE:
- STREET
- VALVE SHIM THICKNESS METRIC:
- 2.20 MM
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
$10.95 -
Hot Cams Valve Shim 7.48mm x 2.25mm for Honda CRF450R 2002-2008 5PK748225
HOT CAMS
$10.95Valve shim clearance directly impacts combustion efficiency, valve timing, and engine longevity—and worn or improperly sized shims compromise all three. This Hot Cams replacement pack gives you five precision shims sized for Honda CRF450R engines,...09261323- SKU:
- 09261323
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- RIDING STYLE:
- SNOW
- RIDING STYLE:
- STREET
- UNITS:
- 5 PACK
- OUTSIDE DIAMETER METRIC:
- 7.48 MM
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- ATV
- VALVE SHIM THICKNESS METRIC:
- 2.25 MM
- PRODUCT NAME:
- SHIM
- RIDING STYLE:
- UTV
- RIDING STYLE:
- WATERCRAFT
- TYPE:
- VALVE
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
$10.95 -
Hot Cams Valve Shim 7.48mm x 2.30mm for Honda CRF150R 2007-2016 5PK748230
HOT CAMS
$10.95Valve clearance drift is one of the most overlooked maintenance items that directly impacts engine performance, fuel efficiency, and longevity. The HOT CAMS 7.48mm x 2.30mm Valve Shim 5-Pack gives you precision-engineered replacements to restore optimal...09261324- SKU:
- 09261324
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- OUTSIDE DIAMETER METRIC:
- 7.48 MM
- PRODUCT NAME:
- SHIM
- RIDING STYLE:
- SNOW
- RIDING STYLE:
- STREET
- UNITS:
- 5 PACK
- RIDING STYLE:
- UTV
- RIDING STYLE:
- WATERCRAFT
- TYPE:
- VALVE
- VALVE SHIM THICKNESS METRIC:
- 2.30 MM
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- ATV
- RIDING STYLE:
- OFF-ROAD
- MATERIAL:
- STEEL
$10.95 -
Hot Cams Valve Shim 7.48mm x 2.35mm for Honda CRF150R 2007-2014 5PK748235
HOT CAMS
$10.95Proper valve clearance is critical to engine performance, fuel efficiency, and longevity—and worn or incorrect shims directly impact all three. The Hot Cams Valve Shim pack gives you five precision-engineered replacements to maintain exact clearance...09261325- SKU:
- 09261325
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- RIDING STYLE:
- ATV
- TYPE:
- VALVE
- RIDING STYLE:
- UTV
- MATERIAL:
- STEEL
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- OFF-ROAD
- VALVE SHIM THICKNESS METRIC:
- 2.35 MM
- OUTSIDE DIAMETER METRIC:
- 7.48 MM
- PRODUCT NAME:
- SHIM
- RIDING STYLE:
- SNOW
- RIDING STYLE:
- STREET
- RIDING STYLE:
- WATERCRAFT
- UNITS:
- 5 PACK
$10.95 -
Hot Cams Valve Shim 7.48mm x 2.40mm for Honda CRF250R 2004-2017 5PK748240
HOT CAMS
$10.95Valve shim wear is one of the most common causes of poor engine performance and increased valve clearance in high-revving applications. The HOT CAMS 7.48mm x 2.40mm valve shim keeps your Honda CRF250R's valve train dialed in, maintaining precise...09261326- SKU:
- 09261326
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- RIDING STYLE:
- ATV
- TYPE:
- VALVE
- MATERIAL:
- STEEL
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- OFF-ROAD
- RIDING STYLE:
- SNOW
- OUTSIDE DIAMETER METRIC:
- 7.48 MM
- PRODUCT NAME:
- SHIM
- RIDING STYLE:
- STREET
- RIDING STYLE:
- UTV
- RIDING STYLE:
- WATERCRAFT
- UNITS:
- 5 PACK
- VALVE SHIM THICKNESS METRIC:
- 2.40 MM
$10.95Qty in Cart: 0Quantity:Price:$10.95Subtotal: -
Hot Cams Valve Shim 7.48mm x 2.45mm for Honda CRF150R 2007-2016 5PK748245
HOT CAMS
$10.95Valve shim clearance directly impacts your CRF150R's compression, valve timing, and overall engine responsiveness. Over time, shims wear and compress, throwing off your valve clearances and robbing you of peak performance. This 5-pack of Hot Cams valve...09261327- SKU:
- 09261327
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- RIDING STYLE:
- ATV
- TYPE:
- VALVE
- RIDING STYLE:
- STREET
- MATERIAL:
- STEEL
- PRODUCT NAME:
- SHIM
- RIDING STYLE:
- OFF-ROAD
- RIDING STYLE:
- SNOW
- UNITS:
- 5 PACK
- VALVE SHIM THICKNESS METRIC:
- 2.45 MM
- OUTSIDE DIAMETER METRIC:
- 7.48 MM
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- UTV
- RIDING STYLE:
- WATERCRAFT
$10.95 -
Hot Cams Valve Shim 7.48mm x 3.20mm for Honda CRF150R 2007-2019 5PK748320
HOT CAMS
$10.95Valve clearance directly impacts combustion efficiency, throttle response, and engine longevity—and worn or incorrect shims compromise all three. The HOT CAMS 7.48mm x 3.20mm Valve Shim pack gives you five precision replacements to maintain optimal valve...09261342- SKU:
- 09261342
- Availability:
- Ships Same Business Day
- Weight:
- 0.06 LBS
- TYPE:
- VALVE
- VALVE SHIM THICKNESS METRIC:
- 3.20 MM
- OUTSIDE DIAMETER METRIC:
- 7.48 MM
- RIDING STYLE:
- ATV
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- SHIM
- RIDING STYLE:
- SNOW
- RIDING STYLE:
- WATERCRAFT
- UNITS:
- 5 PACK
- MATERIAL:
- STEEL
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- OFF-ROAD
- RIDING STYLE:
- UTV
$10.95 -
Hot Cams Valve Shim 7.48mm x 3.40mm for Honda CRF150R 2007-2019 5PK748340
HOT CAMS
$10.95Proper valve clearance is critical for optimal engine performance, fuel efficiency, and longevity on your Honda CRF150R. Over time, valve shims wear and require replacement to maintain precise clearances and prevent valve float or excessive wear on...09261346- SKU:
- 09261346
- Availability:
- Ships Same Business Day
- Weight:
- 0.02 LBS
- OUTSIDE DIAMETER METRIC:
- 7.48 MM
- PRODUCT NAME:
- SHIM
- RIDING STYLE:
- SNOW
- RIDING STYLE:
- STREET
- UNITS:
- 5 PACK
- VALVE SHIM THICKNESS METRIC:
- 3.40 MM
- MATERIAL:
- STEEL
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- OFF-ROAD
- RIDING STYLE:
- UTV
- RIDING STYLE:
- WATERCRAFT
- TYPE:
- VALVE
- RIDING STYLE:
- ATV
$10.95 -
Hot Cams Valve Shim 9.48mm x 1.55mm for Honda CRF450R 2002-2014 5PK948155
HOT CAMS
$10.95Valve clearance directly impacts combustion efficiency, valve longevity, and overall engine reliability—and shim thickness is critical to getting it right. The Hot Cams 9.48mm x 1.55mm valve shims let you fine-tune clearance with precision, whether...09261379- SKU:
- 09261379
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- RIDING STYLE:
- ATV
- TYPE:
- VALVE
- RIDING STYLE:
- STREET
- MATERIAL:
- STEEL
- OUTSIDE DIAMETER METRIC:
- 9.48 MM
- RIDING STYLE:
- OFF-ROAD
- RIDING STYLE:
- SNOW
- VALVE SHIM THICKNESS METRIC:
- 1.55 MM
- PRODUCT NAME:
- SHIM
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- UTV
- RIDING STYLE:
- WATERCRAFT
- UNITS:
- 5 PACK
$10.95 -
Hot Cams Valve Shim 9.48mm x 1.75mm for Honda CRF450R 2002-2014 5PK948175
HOT CAMS
$10.95Valve clearance directly impacts combustion efficiency and engine longevity—getting it right requires precision shims that won't degrade under heat cycling. The Hot Cams 9.48mm x 1.75mm shims deliver the exact tolerances needed for Honda CRF450R engines,...09261383- SKU:
- 09261383
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- RIDING STYLE:
- ATV
- TYPE:
- VALVE
- VALVE SHIM THICKNESS METRIC:
- 1.75 MM
- RIDING STYLE:
- STREET
- MATERIAL:
- STEEL
- OUTSIDE DIAMETER METRIC:
- 9.48 MM
- PRODUCT NAME:
- SHIM
- RIDING STYLE:
- SNOW
- UNITS:
- 5 PACK
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- OFF-ROAD
- RIDING STYLE:
- UTV
- RIDING STYLE:
- WATERCRAFT
$10.95 -
Hot Cams Valve Shim 9.48mm x 1.80mm for Honda CRF450R 2002-2023 5PK948180
HOT CAMS
$10.95Valve clearance directly impacts combustion efficiency, engine longevity, and power output—even slight deviations can cause performance loss or catastrophic valve damage. The HOT CAMS Valve Shim pack gives you precise adjustment capability without...09261384- SKU:
- 09261384
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- OUTSIDE DIAMETER METRIC:
- 9.48 MM
- PRODUCT NAME:
- SHIM
- RIDING STYLE:
- SNOW
- RIDING STYLE:
- WATERCRAFT
- TYPE:
- VALVE
- UNITS:
- 5 PACK
- RIDING STYLE:
- ATV
- RIDING STYLE:
- STREET
- VALVE SHIM THICKNESS METRIC:
- 1.80 MM
- MATERIAL:
- STEEL
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- OFF-ROAD
- RIDING STYLE:
- UTV
$10.95 -
Hot Cams Valve Shim 9.48mm x 1.85mm for Honda CRF 450R 2002-2014 5PK948185
HOT CAMS
$10.95Valve clearance directly impacts combustion efficiency, engine longevity, and peak performance—and shim wear is inevitable with high-mileage or modified engines. This Hot Cams five-pack gives you the precision adjustment capability to dial in exact valve...09261385- SKU:
- 09261385
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- RIDING STYLE:
- ATV
- TYPE:
- VALVE
- VALVE SHIM THICKNESS METRIC:
- 1.85 MM
- 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
$10.95 -
Hot Cams Valve Shim 9.48mm x 1.90mm for Honda CRF450R 2002-2012 5PK948190
HOT CAMS
$10.95Valve clearance drift is one of the most common culprits behind performance loss and increased valve train noise on high-mileage CRF450R engines. These HOT CAMS valve shims restore precise clearance tolerances, which directly improves combustion...09261386- SKU:
- 09261386
- Availability:
- Ships Same Business Day
- Weight:
- 0.06 LBS
- RIDING STYLE:
- ATV
- TYPE:
- VALVE
- VALVE SHIM THICKNESS METRIC:
- 1.90 MM
- MATERIAL:
- STEEL
- OUTSIDE DIAMETER METRIC:
- 9.48 MM
- RIDING STYLE:
- OFF-ROAD
- RIDING STYLE:
- SNOW
- UNITS:
- 5 PACK
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- SHIM
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- UTV
- RIDING STYLE:
- WATERCRAFT
$10.95 -
Hot Cams Valve Shim 9.48mm x 3.15mm for Honda CRF450R 2002-2009 5PK948315
HOT CAMS
$10.95Valve clearance directly impacts combustion efficiency, noise levels, and engine longevity—and worn or incorrect shims compromise all three. The HOT CAMS 9.48mm x 3.15mm Valve Shim pack gives you five precision-engineered replacements to restore optimal...09261411- SKU:
- 09261411
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- PRODUCT NAME:
- SHIM
- RIDING STYLE:
- SNOW
- RIDING STYLE:
- STREET
- RIDING STYLE:
- WATERCRAFT
- UNITS:
- 5 PACK
- VALVE SHIM THICKNESS METRIC:
- 3.15 MM
- MATERIAL:
- STEEL
- OUTSIDE DIAMETER METRIC:
- 9.48 MM
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- OFF-ROAD
- RIDING STYLE:
- UTV
- RIDING STYLE:
- ATV
- TYPE:
- VALVE
$10.95
