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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Hinson Racing Clutch Cover 2002-2022 Yamaha YZ85 C159
HINSON RACING
$169.59Upgrade your YZ85 with the HINSON RACING Clutch Cover, designed to enhance performance and durability on the track. Engineered for optimal heat dissipation, this clutch cover provides a significant advantage over stock components, ensuring reliable...09401036- SKU:
- 09401036
- Availability:
- Ships Same Business Day
- Weight:
- 0.65 LBS
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- CLUTCH
- COLOR/FINISH:
- BLACK
- MATERIAL:
- T-6 ALUMINUM
- PRODUCT NAME:
- COVER
- UNITS:
- EACH
- MODEL:
- BILLETPROOF
$169.59Qty in Cart: 0Quantity:Price:$169.59Subtotal: -
Hinson Racing Clutch Cover KTM 85 SX 2018-2024 C477
HINSON RACING
$180.19The HINSON RACING Clutch Cover C477 is engineered for superior performance, delivering enhanced heat dissipation and durability for demanding racing conditions. Designed and manufactured in the U.S.A., this clutch cover exceeds stock specifications,...09401178- SKU:
- 09401178
- Availability:
- Ships Same Business Day
- Weight:
- 0.85 LBS
- COLOR/FINISH:
- BLACK
- PRODUCT NAME:
- COVER
- RIDING STYLE:
- OFF-ROAD
- MODEL:
- BILLETPROOF
- MATERIAL:
- T-6 ALUMINUM
- TYPE:
- CLUTCH
- UNITS:
- EACH
$180.19 -
Hinson Racing Clutch Cover for Honda CR250R 2002-2007 C028-002
HINSON RACING
$201.39Enhance your CR250's performance with the HINSON RACING Clutch Cover. Designed for superior heat dissipation and built to withstand the rigors of racing, this clutch cover is a must-have upgrade for serious riders. Proudly made in the U.S.A., it combines...09401255- SKU:
- 09401255
- Availability:
- Ships Same Business Day
- Weight:
- 1.25 LBS
- COLOR/FINISH:
- BLACK
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- CLUTCH
- MODEL:
- BILLETPROOF
- MATERIAL:
- T-6 ALUMINUM
- PRODUCT NAME:
- COVER
- UNITS:
- EACH
$201.39 -
Hinson Racing Clutch Cover Yamaha YZ250 2001-2024 C054
HINSON RACING
$169.59Elevate your YZ250's performance with the Hinson Racing Clutch Cover, designed for optimal heat dissipation and unmatched durability. Engineered with race-tested materials, this cover offers a significant upgrade over stock options, ensuring your bike...09401256- SKU:
- 09401256
- Availability:
- Ships Same Business Day
- Weight:
- 0.81 LBS
- COLOR/FINISH:
- BLACK
- PRODUCT NAME:
- COVER
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
- TYPE:
- CLUTCH
- MATERIAL:
- T-6 ALUMINUM
- MODEL:
- BILLETPROOF
$169.59Qty in Cart: 0Quantity:Price:$169.59Subtotal: -
Hinson Racing Clutch Cover KTM 250 SX 2012 C200
HINSON RACING
$169.99Elevate your KTM C200's performance with the HINSON RACING Clutch Cover, engineered for superior heat dissipation and enhanced durability. This race-proven component is designed to withstand the rigors of competitive riding while delivering unmatched...09401259- SKU:
- 09401259
- Availability:
- Ships Same Business Day
- Weight:
- 0.90 LBS
- TYPE:
- CLUTCH
- COLOR/FINISH:
- BLACK
- PRODUCT NAME:
- COVER
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
- MATERIAL:
- T-6 ALUMINUM
- MODEL:
- BILLETPROOF
$169.99Qty in Cart: 0Quantity:Price:$169.99Subtotal: -
Hinson Racing Clutch Cover Yamaha YZ125 2005-2022 C240
HINSON RACING
$169.59Elevate your YZ125's performance with the HINSON RACING Clutch Cover C240, designed for superior heat dissipation and enhanced durability. This race-proven component ensures that your bike operates at peak efficiency, giving you the competitive edge you...09401260- SKU:
- 09401260
- Availability:
- Ships Same Business Day
- Weight:
- 0.70 LBS
- PRODUCT NAME:
- COVER
- UNITS:
- EACH
- MATERIAL:
- T-6 ALUMINUM
- MODEL:
- BILLETPROOF
- COLOR/FINISH:
- BLACK
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- CLUTCH
$169.59 -
Hinson Racing Clutch Cover for 2007-2022 Honda CRF150R C390
HINSON RACING
$635.99Enhance your CRF150R's performance with the HINSON RACING Clutch Cover. Engineered for superior heat dissipation and durability, this clutch cover is a must-have for serious racers looking to gain a competitive edge. Proudly made in the U.S.A., it...09401261- SKU:
- 09401261
- Availability:
- Ships Same Business Day
- Weight:
- 2.00 LBS
- PRODUCT NAME:
- COVER
- UNITS:
- EACH
- MODEL:
- BILLETPROOF
- MATERIAL:
- T-6 ALUMINUM
- COLOR/FINISH:
- BLACK
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- CLUTCH
$635.99 -
Hinson Racing Clutch Cover KTM 85 SX 2006-2017 C249
HINSON RACING
$169.59Enhance your bike's performance with the HINSON RACING Clutch Cover, designed specifically for the KTM 85 C249. This premium cover not only improves heat dissipation but also offers superior strength compared to the stock version, ensuring durability and...09401473- SKU:
- 09401473
- Availability:
- Ships Same Business Day
- Weight:
- 0.60 LBS
- COLOR/FINISH:
- BLACK
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- CLUTCH
- MATERIAL:
- T-6 ALUMINUM
- PRODUCT NAME:
- COVER
- MODEL:
- BILLETPROOF
- UNITS:
- EACH
$169.59 -
Hinson Racing Clutch Cover Kawasaki KX125 2003-2008 C195
HINSON RACING
$169.59Enhance your KX125's performance with the HINSON RACING Clutch Cover, expertly designed to improve heat dissipation and durability. This race-proven component is crafted in the U.S.A., ensuring superior quality and reliability for competitive riders. ...09401474- SKU:
- 09401474
- Availability:
- Ships Same Business Day
- Weight:
- 0.70 LBS
- COLOR/FINISH:
- BLACK
- MODEL:
- BILLETPROOF
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
- PRODUCT NAME:
- COVER
- TYPE:
- CLUTCH
- MATERIAL:
- T-6 ALUMINUM
$169.59Qty in Cart: 0Quantity:Price:$169.59Subtotal: -
Hinson Racing Clutch Cover Kawasaki KX450F 2016-2018 C463
HINSON RACING
$180.19Enhance your riding experience with the Hinson Racing Clutch Cover, specifically designed for the KX450F. This high-performance cover not only improves heat dissipation but also offers superior strength compared to stock options, ensuring durability on...09401475- SKU:
- 09401475
- Availability:
- Ships Same Business Day
- Weight:
- 0.75 LBS
- COLOR/FINISH:
- BLACK
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- CLUTCH
- PRODUCT NAME:
- COVER
- UNITS:
- EACH
- MATERIAL:
- T-6 ALUMINUM
- MODEL:
- BILLETPROOF
$180.19 -
Hinson Racing Clutch Cover KTM 250 SX 2013-2016 C500
HINSON RACING
$180.19Elevate your KTM C500's performance with the HINSON RACING Clutch Cover, designed for optimal heat dissipation and enhanced durability. This race-proven component not only outperforms stock covers but also ensures reliability on the toughest tracks...09401476- SKU:
- 09401476
- Availability:
- Ships Same Business Day
- Weight:
- 0.95 LBS
- COLOR/FINISH:
- BLACK
- MODEL:
- BILLETPROOF
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
- PRODUCT NAME:
- COVER
- TYPE:
- CLUTCH
- MATERIAL:
- T-6 ALUMINUM
$180.19 -
Hinson Racing Clutch Cover KTM 450 SX-F 2016-2022 C654
HINSON RACING
$180.19Upgrade your bike's performance with the HINSON RACING Clutch Cover specifically designed for the KTM 450 C654. This premium clutch cover not only enhances heat dissipation but also offers superior strength compared to stock options, ensuring reliability...09401477- SKU:
- 09401477
- Availability:
- Ships Same Business Day
- Weight:
- 0.80 LBS
- TYPE:
- CLUTCH
- PRODUCT NAME:
- COVER
- COLOR/FINISH:
- BLACK
- MODEL:
- BILLETPROOF
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
- MATERIAL:
- T-6 ALUMINUM
- RIDING STYLE:
- STREET
$180.19 -
Hinson Racing Clutch Cover KTM 250 XC-F 2016-2022 C677
HINSON RACING
$180.19Enhance your KTM's performance with the Hinson Racing Clutch Cover C677, engineered for superior heat management and durability. This race-proven component is crafted in the U.S.A., ensuring top-notch quality and reliability for serious riders. ...09401478- SKU:
- 09401478
- Availability:
- Ships Same Business Day
- Weight:
- 0.71 LBS
- COLOR/FINISH:
- BLACK
- RIDING STYLE:
- OFF-ROAD
- MODEL:
- BILLETPROOF
- UNITS:
- EACH
- MATERIAL:
- T-6 ALUMINUM
- PRODUCT NAME:
- COVER
- RIDING STYLE:
- STREET
- TYPE:
- CLUTCH
$180.19 -
Hinson Racing Clutch Cover for Honda CRF450R 2017-2024 C789-0816
HINSON RACING
$211.99Elevate your performance with the HINSON RACING Clutch Cover for the CRF450R, designed to enhance durability and efficiency on the track. Crafted from premium T-6 aircraft-quality aluminum, this clutch cover is engineered to withstand the rigors of...09401591- SKU:
- 09401591
- Availability:
- Ships Same Business Day
- Weight:
- 0.91 LBS
- PRODUCT NAME:
- COVER
- UNITS:
- EACH
- MATERIAL:
- T-6 ALUMINUM
- COLOR/FINISH:
- BLACK
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- CLUTCH
$211.99Qty in Cart: 0Quantity:Price:$211.99Subtotal: -
Hinson Racing Clutch Cover KTM 250 SX 2017-2018 C600
HINSON RACING
$180.19Upgrade your ride with the HINSON RACING Clutch Cover, specifically designed for KTM 250/300 models. This high-performance component enhances heat dissipation and durability, ensuring your bike operates at peak efficiency. Crafted from premium billet T-6...09401592- SKU:
- 09401592
- Availability:
- Ships Same Business Day
- Weight:
- 0.90 LBS
- MATERIAL:
- T-6 ALUMINUM
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- COVER
- UNITS:
- EACH
- COLOR/FINISH:
- BLACK
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- CLUTCH
$180.19 -
Hinson Racing Oil Filler Cap Kawasaki KX250F 2004-2017 OC217
HINSON RACING
$21.19Upgrade your ATV's performance and aesthetics with the HINSON RACING Oil Filler Cap. Crafted from high-quality T-6 aluminum, this cap not only enhances durability but also delivers a sleek, factory-inspired look. Trusted by professional race teams around...09500616- SKU:
- 09500616
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- COLOR/FINISH:
- POLISHED
- TYPE:
- OIL FILLER
- UNITS:
- EACH
- PRODUCT NAME:
- CAP
- RIDING STYLE:
- ATV
- RIDING STYLE:
- OFF-ROAD
$21.19 -
Rekluse Clutch Cover KTM 250 EXC 2017-2023 RMS-396
REKLUSE
$200.34Experience top-tier performance and unmatched durability with the REKLUSE Clutch Cover, specifically designed for HUSQVARNA and KTM 250/300 models. Crafted from high-quality billet aluminum, this clutch cover is engineered to withstand the toughest...09401822- SKU:
- 09401822
- Availability:
- Ships Same Business Day
- Weight:
- 0.95 LBS
- COLOR/FINISH:
- ANODIZED
- MATERIAL:
- BILLET ALUMINUM
- PRODUCT NAME:
- COVER
- COLOR/FINISH:
- BLACK
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
- TYPE:
- CLUTCH
- RIDING STYLE:
- STREET
$200.34 -
Hiflofiltro Oil Filter for Aprilia RXV 550 2006-2009 HF563
HIFLOFILTRO
$6.08Experience superior engine protection with the HIFLOFILTRO Oil Filter HF563. Designed for optimal performance, this premium oil filter ensures that your engine runs smoothly and efficiently, extending its lifespan. Trust in a brand that prioritizes...07120212- SKU:
- 07120212
- Availability:
- Ships Same Business Day
- Weight:
- 0.12 LBS
- COLOR/FINISH:
- YELLOW
- PRODUCT NAME:
- OIL FILTER
- RIDING STYLE:
- OFF-ROAD
- WIDTH METRIC:
- 45 MM
- STYLE:
- PREMIUM
- UNITS:
- EACH
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- TYPE:
- CARTRIDGE
- BASE COLOR:
- YELLOW
- LENGTH METRIC:
- 49 MM
$6.08 -
Hiflofiltro Oil Filter Aprilia Scarabeo 125 200 2007-2015 HF186
HIFLOFILTRO
$5.00Experience superior engine protection with the HIFLOFILTRO Oil Filter HF186. Designed for optimal performance, this premium oil filter ensures that your engine runs smoothly and efficiently. Trust in high-quality materials and expert engineering to keep...07120300- SKU:
- 07120300
- Availability:
- Ships Same Business Day
- Weight:
- 0.07 LBS
- RIDING STYLE:
- STREET
- STYLE:
- PREMIUM
- BASE COLOR:
- BLACK
- UNITS:
- EACH
- WIDTH METRIC:
- 41 MM
- COLOR/FINISH:
- BLACK
- LENGTH METRIC:
- 35 MM
- PRODUCT NAME:
- OIL FILTER
- TYPE:
- CARTRIDGE
$5.00 -
VERTEX Piston Kit 23870B
VERTEX
$353.95A piston kit is the foundation of engine reliability and performance—whether you're rebuilding after wear or upgrading for increased displacement and power. The VERTEX Piston Kit 23870B delivers the durability and precision needed for demanding...09103338- SKU:
- 09103338
- Availability:
- Ships Same Business Day
- Weight:
- 0.50 LBS
- RIDING STYLE:
- OFF-ROAD
- STYLE:
- FORGED HIGH COMPRESSION
- UNITS:
- KIT
- COMPRESSION RATIO IMPERIAL:
- 14.5:1
- CYLINDER DIAMETER METRIC:
- 78.00 MM
- DISPLACEMENT:
- 250 CC
- PRODUCT NAME:
- PISTON KIT
- RIDING STYLE:
- STREET
- PISTON DIAMETER METRIC:
- 77.97 MM
- ENGINE TYPE:
- 4-STROKE
- PISTON MATERIAL:
- FORGED 2618 ALUMINUM
- SKIRT COATING:
- MOLYBDENUM DISULPHITE
$353.95
