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
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Hot Cams Exhaust Camshaft for Suzuki DR-Z400E 2000-2008 2252-2E
HOT CAMS
$337.00If you're running a DR-Z400E and serious about extracting every bit of performance from your engine, a quality exhaust camshaft is non-negotiable. Hot Cams' 2252-2E delivers measurable gains in...09250694- SKU:
- 09250694
- Availability:
- Ships Same Business Day
- Weight:
- 1.14 LBS
- PRODUCT NAME:
- CAMSHAFT
- RIDING STYLE:
- OFF-ROAD
- EXHAUST LIFT METRIC:
- 9.07 MM
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- ATV
- UNITS:
- EACH
- EXHAUST DURATION IMPERIAL:
- 238°
- APPLICATION:
- EXHAUST
- TYPE:
- STAGE 2
$337.00 -
Hot Cams Stage 2 Intake Camshaft for KTM 250 SX-F 2011-2012 3227-2IN
HOT CAMS
$161.95The Hot Cams Stage 2 intake camshaft is engineered specifically for KTM 250 SX-F riders who demand peak horsepower and consistent power delivery at high RPMs. If you're pushing your 2011-2012 machine...09250699- SKU:
- 09250699
- Availability:
- Ships Same Business Day
- Weight:
- 0.65 LBS
- APPLICATION:
- INTAKE
- INTAKE DURATION IMPERIAL:
- 253°
- INTAKE LIFT METRIC:
- 10.73 MM
- UNITS:
- EACH
- PRODUCT NAME:
- CAMSHAFT
- TYPE:
- STAGE 2
- RIDING STYLE:
- OFF-ROAD
$161.95Qty in Cart: 0Quantity:Price:$161.95Subtotal: -
Hot Cams 10mm Valve Shim Kit for KTM 1190 Adventure 2014-2016 HCSHIM31
HOT CAMS
$118.95Valve clearance directly impacts combustion efficiency, engine longevity, and power delivery—and the Hot Cams 10mm Valve Shim Kit gives you the precision adjustment needed to dial in your KTM 1190...09250726- SKU:
- 09250726
- Availability:
- Ships Same Business Day
- Weight:
- 0.65 LBS
- PRODUCT NAME:
- SHIM KIT
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- UNITS:
- 5 PACK
- DIAMETER METRIC:
- 10.00 MM
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- VALVE
$118.95Qty in Cart: 0Quantity:Price:$118.95Subtotal: -
Hot Cams Cam Chain for Honda CRF250R 2004-2009 and CRF250X 2004-2017 HC92RH2015104
HOT CAMS
$80.95A worn or failing cam chain compromises valve timing precision and can lead to catastrophic engine damage if it breaks. The HOT CAMS HC92RH2015104 delivers OEM-exceeding durability with heat-treated...09250761- SKU:
- 09250761
- Availability:
- Ships Same Business Day
- Weight:
- 0.55 LBS
- BASE FINISH:
- RAW
- CHAIN SIZE:
- 92RH2015
- MATERIAL:
- STEEL
- MODEL:
- SILENT
- RIDING STYLE:
- OFF-ROAD
- COLOR/FINISH:
- RAW
- UNITS:
- EACH
- PRODUCT NAME:
- CHAIN
- TYPE:
- CAM
$80.95 -
Hot Cams Cam Chain for KTM 450 SX-F 2007-2012 HC98XRH2015080
HOT CAMS
$51.95The OEM cam chain on your KTM 450 SX-F is a wear item that directly impacts engine reliability and performance. HOT CAMS' upgrade delivers heat-treated links that resist friction and impact better...09250985- SKU:
- 09250985
- Availability:
- Ships Same Business Day
- Weight:
- 0.45 LBS
- PRODUCT NAME:
- CHAIN
- TYPE:
- CAM
- MATERIAL:
- STEEL
- MODEL:
- SILENT
- RIDING STYLE:
- OFF-ROAD
- CHAIN SIZE:
- 98XRH2015
- COLOR/FINISH:
- RAW
- RIDING STYLE:
- ATV
- RIDING STYLE:
- STREET
- UNITS:
- EACH
- BASE FINISH:
- RAW
$51.95Qty in Cart: 0Quantity:Price:$51.95Subtotal: -
Hot Cams Cam Chain for Honda CRF100F 2004-2013 HCDID25H090
HOT CAMS
$43.95A worn or stock cam chain is a common failure point on high-mileage Honda CRF100F engines, leading to timing issues and reduced performance. The HOT CAMS HCDID25H090 replaces OEM specifications with...09250989- SKU:
- 09250989
- Availability:
- Ships Same Business Day
- Weight:
- 0.30 LBS
- MODEL:
- ROLLER
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- CHAIN
- BASE FINISH:
- RAW
- CHAIN SIZE:
- DID25H
- TYPE:
- CAM
- COLOR/FINISH:
- RAW
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
$43.95 -
Hot Cams Cam Chain for Honda TRX200 FourTrax 1990-1991 HCDID25H100
HOT CAMS
$57.95A worn or failing cam chain compromises valve timing and engine reliability—especially critical on high-mileage TRX200 builds. The HOT CAMS HCDID25H100 delivers OEM-exceeding durability with...09250990- SKU:
- 09250990
- Availability:
- Ships Same Business Day
- Weight:
- 0.30 LBS
- COLOR/FINISH:
- RAW
- MATERIAL:
- STEEL
- RIDING STYLE:
- ATV
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
- BASE FINISH:
- RAW
- CHAIN SIZE:
- DID25H
- RIDING STYLE:
- STREET
- TYPE:
- CAM
- PRODUCT NAME:
- CHAIN
- MODEL:
- ROLLER
$57.95 -
Hot Cams Exhaust Camshaft for Kawasaki KLX450R 2008-2009 2199-2E
HOT CAMS
$145.95If you're building a KLX450R engine for serious track duty, cam selection directly determines your power band characteristics and throttle response. The Hot Cams 2199-2E exhaust camshaft delivers...09250566- SKU:
- 09250566
- Availability:
- Ships Same Business Day
- Weight:
- 1.00 LBS
- EXHAUST LIFT METRIC:
- 9.91 MM
- PRODUCT NAME:
- CAMSHAFT
- TYPE:
- STAGE 2
- EXHAUST DURATION IMPERIAL:
- 250°
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
- APPLICATION:
- EXHAUST
$145.95Qty in Cart: 0Quantity:Price:$145.95Subtotal: -
Hot Cams Exhaust Camshaft for Yamaha YZ450F 2010-2013 4164-1EX
HOT CAMS
$321.95If you're running a YZ450F in competitive conditions, your stock exhaust camshaft is limiting your engine's potential across the RPM band. The Hot Cams 4164-1EX delivers measurable gains in torque...09250568- SKU:
- 09250568
- Availability:
- Ships Same Business Day
- Weight:
- 1.00 LBS
- EXHAUST LIFT METRIC:
- 8.64 MM
- PRODUCT NAME:
- CAMSHAFT
- TYPE:
- STAGE 1
- RIDING STYLE:
- OFF-ROAD
- APPLICATION:
- EXHAUST
- EXHAUST DURATION IMPERIAL:
- 249°
- UNITS:
- EACH
$321.95Qty in Cart: 0Quantity:Price:$321.95Subtotal: -
Hot Cams Exhaust Camshaft for Yamaha YZ450F 2010-2013 4166-2EX
HOT CAMS
$321.95The HOT CAMS Exhaust Camshaft 4166-2EX is engineered to unlock measurable gains in both torque and horsepower across your YZ450F's entire powerband. If you're running this bike in competitive racing...09250570- SKU:
- 09250570
- Availability:
- Ships Same Business Day
- Weight:
- 1.02 LBS
- RIDING STYLE:
- OFF-ROAD
- APPLICATION:
- EXHAUST
- PRODUCT NAME:
- CAMSHAFT
- TYPE:
- STAGE 2
- EXHAUST DURATION IMPERIAL:
- 254°
- EXHAUST LIFT METRIC:
- 8.90 MM
- UNITS:
- EACH
$321.95 -
Hot Cams Stage 2 Intake Camshaft for 1996-2018 Kawasaki KLR650 2116-2IN
HOT CAMS
$289.95If you're running a KLR650, the stock camshaft is holding back your engine's potential. The Hot Cams Stage 2 Intake Camshaft delivers measurable gains in peak horsepower and throttle response without...09250324- SKU:
- 09250324
- Availability:
- Ships Same Business Day
- Weight:
- 1.01 LBS
- INTAKE DURATION IMPERIAL:
- 235.75°
- INTAKE LIFT METRIC:
- 9.11 MM
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- UNITS:
- EACH
- PRODUCT NAME:
- CAMSHAFT
- TYPE:
- STAGE 2
- APPLICATION:
- INTAKE
$289.95Qty in Cart: 0Quantity:Price:$289.95Subtotal: -
Hot Cams Stage 2 Exhaust Camshaft for Kawasaki KLR650 1996-2018 2117-2E
HOT CAMS
$344.35If you're running a KLR650 and want measurable power gains across the entire RPM band, the Hot Cams Stage 2 Exhaust Camshaft is a bolt-on upgrade that delivers. This cam is engineered specifically...09250325- SKU:
- 09250325
- Availability:
- Ships Same Business Day
- Weight:
- 1.11 LBS
- APPLICATION:
- EXHAUST
- EXHAUST DURATION IMPERIAL:
- 235.75°
- EXHAUST LIFT METRIC:
- 9.10 MM
- TYPE:
- STAGE 2
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- UNITS:
- EACH
- PRODUCT NAME:
- CAMSHAFT
$344.35 -
Hot Cams 8.9mm Valve Shim Kit for 2005-2018 KTM 250 SX-F HCSHIM00
HOT CAMS
$98.65Precise valve clearance is critical to maintaining peak performance and preventing costly engine damage on your 250 SX-F. Hot Cams' 8.9mm valve shim kit gives you the adjustment range needed to dial...09250332- SKU:
- 09250332
- Availability:
- Ships Same Business Day
- Weight:
- 0.56 LBS
- DIAMETER METRIC:
- 8.90 MM
- RIDING STYLE:
- OFF-ROAD
- PRODUCT NAME:
- SHIM KIT
- UNITS:
- 5 PACK
- TYPE:
- VALVE
$98.65 -
Hot Cams Stage 3 Camshaft for Honda CRF250R 2004-2009 1104-3
HOT CAMS
$448.95The HOT CAMS Stage 3 Camshaft transforms your CRF250R's power delivery by optimizing valve timing and lift across the entire RPM band—critical for competitive racing where mid-range responsiveness...09250269- SKU:
- 09250269
- Availability:
- Ships Same Business Day
- Weight:
- 1.05 LBS
- INTAKE DURATION IMPERIAL:
- 254°
- PRODUCT NAME:
- CAMSHAFT
- INTAKE LIFT METRIC:
- 8.61 MM
- RIDING STYLE:
- OFF-ROAD
- APPLICATION:
- EXHAUST
- APPLICATION:
- INTAKE
- EXHAUST DURATION IMPERIAL:
- 261.5°
- EXHAUST LIFT METRIC:
- 8.13 MM
- TYPE:
- STAGE 3
- UNITS:
- EACH
$448.95 -
Hot Cams Stage 2 Intake Camshaft for Yamaha YZ450F 2003-2009 4089-2IN
HOT CAMS
$335.95Stock cam profiles limit your YZ450F's potential across the entire powerband. The Hot Cams Stage 2 Intake Camshaft delivers measurable gains in throttle response and mid-to-top-end power without...09250276- SKU:
- 09250276
- Availability:
- Ships Same Business Day
- Weight:
- 0.89 LBS
- PRODUCT NAME:
- CAMSHAFT
- RIDING STYLE:
- OFF-ROAD
- APPLICATION:
- INTAKE
- UNITS:
- EACH
- INTAKE DURATION IMPERIAL:
- 260°
- INTAKE LIFT METRIC:
- 8.89 MM
- TYPE:
- STAGE 2
$335.95 -
Hot Cams Honda CRF150R 2007-2021 Stage 1 Camshaft 1079-1
HOT CAMS
$383.20Stock camshaft profiles limit your CRF150R's potential—the Hot Cams Stage 1 unleashes measurable torque gains across the midrange without requiring valve spring upgrades or custom machine work...09250131- SKU:
- 09250131
- Availability:
- Ships Same Business Day
- Weight:
- 1.47 LBS
- EXHAUST DURATION IMPERIAL:
- 265°
- TYPE:
- STAGE 1
- INTAKE DURATION IMPERIAL:
- 238°
- RIDING STYLE:
- OFF-ROAD
- APPLICATION:
- EXHAUST
- PRODUCT NAME:
- CAMSHAFT
- APPLICATION:
- INTAKE
- EXHAUST LIFT METRIC:
- 7.45 MM
- INTAKE LIFT METRIC:
- 8.00 MM
- UNITS:
- EACH
$383.20 -
Hot Cams Stage 2 Camshaft for Honda CRF150R 2007-2020 1080-2
HOT CAMS
$383.20If you're running a CRF150R in competitive racing or serious recreational riding, your stock camshaft is limiting your engine's potential across the entire RPM band. The Hot Cams Stage 2 delivers...09250132- SKU:
- 09250132
- Availability:
- Ships Same Business Day
- Weight:
- 1.48 LBS
- INTAKE DURATION IMPERIAL:
- 254°
- APPLICATION:
- EXHAUST
- INTAKE LIFT METRIC:
- 8.70 MM
- PRODUCT NAME:
- CAMSHAFT
- TYPE:
- STAGE 2
- EXHAUST DURATION IMPERIAL:
- 273.5°
- UNITS:
- EACH
- APPLICATION:
- INTAKE
- EXHAUST LIFT METRIC:
- 7.75 MM
- RIDING STYLE:
- OFF-ROAD
$383.20 -
Hot Cams Stage 1 Camshaft for Honda CRF250X 2004-2009 2012-2013 2015-2017 1039-1
HOT CAMS
$454.60If you're running a CRF250X and want measurable gains in low-to-mid range torque without tearing into your engine, the Hot Cams Stage 1 is your answer. This drop-in camshaft works with your existing...09250049- SKU:
- 09250049
- Availability:
- Ships Same Business Day
- Weight:
- 1.12 LBS
- INTAKE DURATION IMPERIAL:
- 244°
- INTAKE LIFT METRIC:
- 8.10 MM
- PRODUCT NAME:
- CAMSHAFT
- TYPE:
- STAGE 1
- RIDING STYLE:
- OFF-ROAD
- APPLICATION:
- INTAKE
- EXHAUST DURATION IMPERIAL:
- 250°
- EXHAUST LIFT METRIC:
- 8.10 MM
- UNITS:
- EACH
- APPLICATION:
- EXHAUST
$454.60 -
Hot Cams Stage 1 Intake Camshaft for 2004-2009 Kawasaki KX250F 2004-2007 Suzuki RM-Z250 2041-1IN
HOT CAMS
$309.70If you're running a KX250F or RM-Z250 in competitive racing or serious trail riding, camshaft selection directly determines your power delivery and throttle response. The Hot Cams Stage 1 intake...09250050- SKU:
- 09250050
- Availability:
- Ships Same Business Day
- Weight:
- 0.88 LBS
- TYPE:
- STAGE 1
- PRODUCT NAME:
- CAMSHAFT
- RIDING STYLE:
- OFF-ROAD
- APPLICATION:
- INTAKE
- INTAKE DURATION IMPERIAL:
- 253°
- INTAKE LIFT METRIC:
- 9.14 MM
- UNITS:
- EACH
$309.70 -
Hot Cams Exhaust Camshaft for Kawasaki KX250F 2004-2010 2040-1E
HOT CAMS
$309.70If you're serious about KX250F performance, your stock exhaust cam is leaving horsepower on the table. The Hot Cams 2040-1E is purpose-built to unlock measurable gains in torque and peak power,...09250051- SKU:
- 09250051
- Availability:
- Ships Same Business Day
- Weight:
- 1.11 LBS
- EXHAUST DURATION IMPERIAL:
- 244°
- EXHAUST LIFT METRIC:
- 7.98 MM
- TYPE:
- STAGE 1
- APPLICATION:
- EXHAUST
- PRODUCT NAME:
- CAMSHAFT
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
$309.70
