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!
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- Price
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LA Sleeve Cylinder Sleeve for 2015-2020 Polaris Sportsman 850 FL5395
LA SLEEVE
$117.95Revitalize your engine with the LA SLEEVE Cylinder Sleeve FL5395, designed to restore performance and extend the life of your cylinders. Crafted with precision and durability in mind, this replacement sleeve ensures a perfect fit and optimal...09310643- SKU:
- 09310643
- Availability:
- Ships Same Business Day
- Weight:
- 1.21 LBS
- BORE SIZE METRIC:
- 87.00 MM
- PRODUCT NAME:
- CYLINDER SLEEVE
- CYLINDER BORE COATING:
- CHROME-MOLY ALLOY
- TYPE:
- AC
- COLOR/FINISH:
- ALUMINUM
- RIDING STYLE:
- ATV
- UNITS:
- EACH
$117.95 -
LA Sleeve Cylinder Sleeve Yamaha YFM550 Grizzly 2009-2013 YA5690
LA SLEEVE
$117.95Revitalize your engine with the LA SLEEVE Cylinder Sleeve YA5690, designed for optimal performance and durability. This high-quality replacement sleeve provides a seamless fit, ensuring that your engine runs smoothly and efficiently. Perfect for...09310646- SKU:
- 09310646
- Availability:
- Ships Same Business Day
- Weight:
- 2.35 LBS
- BORE SIZE METRIC:
- 92.00 MM
- COLOR/FINISH:
- ALUMINUM
- RIDING STYLE:
- ATV
- UNITS:
- EACH
- CYLINDER BORE COATING:
- CHROME-MOLY ALLOY
- PRODUCT NAME:
- CYLINDER SLEEVE
- TYPE:
- RS
$117.95 -
LA Sleeve Cylinder Sleeve for Honda CRF230F 2003-2019 H5491
LA SLEEVE
$90.95Revitalize your engine with the LA SLEEVE Cylinder Sleeve H5491, designed for exceptional durability and performance. This high-quality replacement sleeve ensures a perfect fit, allowing your old cylinders to function like new. Engineered with precision,...09310515- SKU:
- 09310515
- Availability:
- Ships Same Business Day
- Weight:
- 0.70 LBS
- COLOR/FINISH:
- CHROME
- TYPE:
- CI
- UNITS:
- EACH
- PRODUCT NAME:
- CYLINDER SLEEVE
- RIDING STYLE:
- OFF-ROAD
- BORE SIZE METRIC:
- 65.50 MM
- CYLINDER BORE COATING:
- CHROME-MOLY ALLOY
$90.95 -
LA Sleeve Cylinder Sleeve for 1987-2006 Yamaha Banshee 350 YA5023
LA SLEEVE
$127.95Premium Replacement Cylinder Sleeves YA5023 Elevate your engine's efficiency with our Premium Replacement Cylinder Sleeves, meticulously engineered to provide superior performance and reliability. These sleeves are the ideal solution for restoring your...YA5023- SKU:
- YA5023
- Availability:
- Ships Same Business Day
- Weight:
- 0.80 LBS
- RIDING STYLE:
- ATV
- BORE SIZE METRIC:
- 64.00 MM
- PRODUCT NAME:
- CYLINDER SLEEVE
- TYPE:
- CI
- UNITS:
- EACH
- COLOR/FINISH:
- ALUMINUM
- CYLINDER BORE COATING:
- CHROME-MOLY ALLOY
$127.95 -
L.A. SLEEVE Cylinder Sleeve for Yamaha YFM 350 1987-2010 YA5024
LA SLEEVE
$111.95Premium Replacement Cylinder Sleeves YA5024 Revamp your engine's performance with our Premium Replacement Cylinder Sleeves, engineered to breathe new life into your machinery. Crafted with precision and durability in mind, these sleeves are the ideal...YA5024- SKU:
- YA5024
- Availability:
- Ships Same Business Day
- Weight:
- 1.80 LBS
- BORE SIZE METRIC:
- 83.00 MM
- RIDING STYLE:
- ATV
- UNITS:
- EACH
- TYPE:
- RS
- COLOR/FINISH:
- ALUMINUM
- CYLINDER BORE COATING:
- CHROME-MOLY ALLOY
- PRODUCT NAME:
- CYLINDER SLEEVE
$111.95 -
L.A. Sleeve Cylinder Sleeve for Yamaha Blaster 1988-2006 YA5035
LA SLEEVE
$127.95High-Performance Replacement Cylinder Sleeves - YA5035 Revitalize your engine's capabilities with our premium Replacement Cylinder Sleeves. Crafted for exceptional strength and reliability, these sleeves ensure your engine operates at peak performance...YA5035- SKU:
- YA5035
- Availability:
- Ships Same Business Day
- Weight:
- 0.81 LBS
- TYPE:
- CI
- UNITS:
- EACH
- BORE SIZE METRIC:
- 66.00 MM
- COLOR/FINISH:
- ALUMINUM
- RIDING STYLE:
- ATV
- CYLINDER BORE COATING:
- CHROME-MOLY ALLOY
- PRODUCT NAME:
- CYLINDER SLEEVE
$127.95 -
LA Sleeve Cylinder Sleeve for Yamaha YFM400 Big Bear 2000-2006 YA5231
LA SLEEVE
$111.95Premium Replacement Cylinder Sleeves - YA5231 Enhance your engine's efficiency with our Premium Replacement Cylinder Sleeves. Crafted for exceptional performance, these sleeves are the ideal choice for restoring worn-out cylinders, ensuring your engine...YA5231- SKU:
- YA5231
- Availability:
- Ships Same Business Day
- Weight:
- 2.00 LBS
- ENGINE TYPE:
- 4-STROKE
- RIDING STYLE:
- ATV
- UNITS:
- EACH
- BORE SIZE METRIC:
- 83.00 MM
- CYLINDER BORE COATING:
- CHROME-MOLY ALLOY
- TYPE:
- RS
- COLOR/FINISH:
- ALUMINUM
- PRODUCT NAME:
- CYLINDER SLEEVE
$111.95 -
LA Sleeve Cylinder Sleeve Yamaha YZ125 1994-1995 54mm Bore YA5257
LA SLEEVE
$131.95Premium Cylinder Sleeves - Model YA5257 Transform your engine's performance with our Premium Cylinder Sleeves. Crafted with precision and durability in mind, these sleeves offer an exceptional solution for restoring engine efficiency and extending the...YA5257- SKU:
- YA5257
- Availability:
- Ships Same Business Day
- Weight:
- 1.00 LBS
- CYLINDER BORE COATING:
- CHROME-MOLY ALLOY
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- AC
- COLOR/FINISH:
- CHROME
- PRODUCT NAME:
- CYLINDER SLEEVE
- UNITS:
- EACH
- BORE SIZE METRIC:
- 54.00 MM
$131.95 -
LA Sleeve Cylinder Sleeve for Yamaha YZ250 1994-1995 YA5258
LA SLEEVE
$148.95Revitalize your engine with our premium quality replacement cylinder sleeves, designed to restore performance and extend the life of your machinery. Engineered with precision, these sleeves provide a perfect fit, ensuring optimal functionality and...YA5258- SKU:
- YA5258
- Availability:
- Ships Same Business Day
- Weight:
- 1.10 LBS
- UNITS:
- EACH
- COLOR/FINISH:
- CHROME
- BORE SIZE METRIC:
- 68.00 MM
- CYLINDER BORE COATING:
- CHROME-MOLY ALLOY
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- AC
- PRODUCT NAME:
- CYLINDER SLEEVE
$148.95 -
LA Sleeve Cylinder Sleeve Yamaha YZ125 1996-1998 YA5348
LA SLEEVE
$131.95Premium Replacement Cylinder Sleeves YA5348 Revamp your engine's performance with our premium replacement cylinder sleeves, designed to rejuvenate worn-out cylinders. Crafted with precision and durability in mind, these sleeves offer a reliable solution...YA5348- SKU:
- YA5348
- Availability:
- Ships Same Business Day
- Weight:
- 0.70 LBS
- CYLINDER BORE COATING:
- CHROME-MOLY ALLOY
- TYPE:
- AC
- BORE SIZE METRIC:
- 54.00 MM
- PRODUCT NAME:
- CYLINDER SLEEVE
- COLOR/FINISH:
- CHROME
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
$131.95 -
LA Sleeve Cylinder Sleeve Yamaha YZ250 1999-2019 YA5377
LA SLEEVE
$148.95Premium Cylinder Sleeves YA5377 Revitalize your engine with our Premium Cylinder Sleeves, expertly crafted to restore and enhance performance. Designed for both vintage and modern applications, these sleeves ensure your engine runs smoother and more...YA5377- SKU:
- YA5377
- Availability:
- Ships Same Business Day
- Weight:
- 1.50 LBS
- CYLINDER BORE COATING:
- CHROME-MOLY ALLOY
- TYPE:
- AC
- BORE SIZE METRIC:
- 66.40 MM
- PRODUCT NAME:
- CYLINDER SLEEVE
- UNITS:
- EACH
- COLOR/FINISH:
- CHROME
- RIDING STYLE:
- OFF-ROAD
$148.95 -
LA Sleeve Cylinder Sleeve Yamaha YZ125 1999-2001 YA5378
LA SLEEVE
$127.95Premium Cylinder Sleeves - YA5378 Revive your engine's efficiency with our Premium Cylinder Sleeves, meticulously crafted to enhance performance and extend the lifespan of your engine. These sleeves offer a seamless solution for restoring power and...YA5378- SKU:
- YA5378
- Availability:
- Ships Same Business Day
- Weight:
- 0.75 LBS
- CYLINDER BORE COATING:
- CHROME-MOLY ALLOY
- TYPE:
- AC
- BORE SIZE METRIC:
- 54.00 MM
- PRODUCT NAME:
- CYLINDER SLEEVE
- UNITS:
- EACH
- COLOR/FINISH:
- CHROME
- RIDING STYLE:
- OFF-ROAD
$127.95 -
LA Sleeve Cylinder Sleeve for Yamaha YFM400 Kodiak 2000-2004 YA5425
LA SLEEVE
$111.95Premium Replacement Cylinder Sleeves YA5425 Upgrade your machinery with our Premium Replacement Cylinder Sleeves, designed to breathe new life into worn-out cylinders. These sleeves combine advanced engineering with robust materials, ensuring your...YA5425- SKU:
- YA5425
- Availability:
- Ships Same Business Day
- Weight:
- 1.95 LBS
- ENGINE TYPE:
- 4-STROKE
- RIDING STYLE:
- ATV
- UNITS:
- EACH
- BORE SIZE METRIC:
- 84.50 MM
- TYPE:
- RS
- COLOR/FINISH:
- ALUMINUM
- CYLINDER BORE COATING:
- CHROME-MOLY ALLOY
- PRODUCT NAME:
- CYLINDER SLEEVE
$111.95 -
LA Sleeve Cylinder Sleeve for Yamaha YZ125 2002 YA5470
LA SLEEVE
$127.95Premium Replacement Cylinder Sleeves YA5470 Revitalize your engine's performance with our Premium Replacement Cylinder Sleeves. Crafted for precision and durability, these sleeves are designed to restore functionality and enhance the lifespan of your...YA5470- SKU:
- YA5470
- Availability:
- Ships Same Business Day
- Weight:
- 0.68 LBS
- COLOR/FINISH:
- CHROME
- PRODUCT NAME:
- CYLINDER SLEEVE
- UNITS:
- EACH
- CYLINDER BORE COATING:
- CHROME-MOLY ALLOY
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- AC
- BORE SIZE METRIC:
- 54.00 MM
$127.95 -
LA Sleeve Cylinder Sleeve Yamaha YFM660R Grizzly 660 2002-2008 YA7018
LA SLEEVE
$117.95Premium Replacement Cylinder Sleeves - YA7018 Transform your engine's performance with our Premium Replacement Cylinder Sleeves. Engineered for precision and durability, these sleeves are designed to restore the integrity of your cylinders, ensuring your...YA7018- SKU:
- YA7018
- Availability:
- Ships Same Business Day
- Weight:
- 2.48 LBS
- COLOR/FINISH:
- ALUMINUM
- CYLINDER BORE COATING:
- CHROME-MOLY ALLOY
- TYPE:
- RS
- RIDING STYLE:
- ATV
- UNITS:
- EACH
- BORE SIZE METRIC:
- 100.00 MM
- PRODUCT NAME:
- CYLINDER SLEEVE
- RIDING STYLE:
- UTV
$117.95 -
LA Sleeve Cylinder Sleeve for Yamaha YFM600FW Grizzly 4x4 1998-2001 YA814
LA SLEEVE
$131.95Premium Cylinder Sleeves - YA814 Transform your engine's performance with our Premium Cylinder Sleeves, expertly crafted to rejuvenate worn cylinders. Designed for automotive enthusiasts, these sleeves provide a reliable solution to enhance engine...YA814- SKU:
- YA814
- Availability:
- Ships Same Business Day
- Weight:
- 2.80 LBS
- TYPE:
- RS
- COLOR/FINISH:
- ALUMINUM
- PRODUCT NAME:
- CYLINDER SLEEVE
- RIDING STYLE:
- ATV
- UNITS:
- EACH
- BORE SIZE METRIC:
- 95.00 MM
- CYLINDER BORE COATING:
- CHROME-MOLY ALLOY
$131.95 -
LA Sleeve Cylinder Sleeve for 1988-2002 Kawasaki KLF220 Bayou 67mm Bore KA5063
LA SLEEVE
$98.95Revitalize your engine with the LA SLEEVE Cylinder Sleeve KA5063, designed to restore performance and extend the life of your cylinders. Crafted from high-quality materials, this replacement sleeve ensures a perfect fit and superior durability, making it...KA5063- SKU:
- KA5063
- Availability:
- Ships Same Business Day
- Weight:
- 1.85 LBS
- RIDING STYLE:
- ATV
- UNITS:
- EACH
- TYPE:
- RS
- BORE SIZE METRIC:
- 67.00 MM
- COLOR/FINISH:
- ALUMINUM
- CYLINDER BORE COATING:
- CHROME-MOLY ALLOY
- PRODUCT NAME:
- CYLINDER SLEEVE
$98.95 -
LA Sleeve Cylinder Sleeve for 1991-1994 Kawasaki KDX250 KA5079
LA SLEEVE
$153.95Revitalize your engine with the LA SLEEVE Cylinder Sleeve KA5079, a premium quality replacement designed to restore performance and extend the life of your cylinders. Crafted with precision, this sleeve ensures a perfect fit and optimal functionality,...KA5079- SKU:
- KA5079
- Availability:
- Ships Same Business Day
- Weight:
- 1.44 LBS
- BORE SIZE METRIC:
- 67.40 MM
- COLOR/FINISH:
- CHROME
- PRODUCT NAME:
- CYLINDER SLEEVE
- UNITS:
- EACH
- CYLINDER BORE COATING:
- CHROME-MOLY ALLOY
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- AC
$153.95 -
LA Sleeve Cylinder Sleeve 56mm Bore Kawasaki KX125 1990-1991 KA5107
LA SLEEVE
$131.95Revitalize your engine with the LA SLEEVE Cylinder Sleeve KA5107, designed for optimal performance and durability. This high-quality replacement sleeve ensures a perfect fit, allowing your old cylinders to regain their functionality and extend their...KA5107- SKU:
- KA5107
- Availability:
- Ships Same Business Day
- Weight:
- 0.75 LBS
- BORE SIZE METRIC:
- 56.00 MM
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
- COLOR/FINISH:
- CHROME
- CYLINDER BORE COATING:
- CHROME-MOLY ALLOY
- PRODUCT NAME:
- CYLINDER SLEEVE
- TYPE:
- AC
$131.95 -
LA Sleeve Cylinder Sleeve for Kawasaki KX80 1991-1994 KA5121
LA SLEEVE
$117.95Revitalize your engine with the LA SLEEVE Cylinder Sleeve KA5121, designed to provide a durable and reliable replacement for worn-out cylinders. Engineered for precision and performance, this sleeve ensures optimal fit and longevity, making it the ideal...KA5121- SKU:
- KA5121
- Availability:
- Ships Same Business Day
- Weight:
- 1.00 LBS
- BORE SIZE METRIC:
- 48.00 MM
- COLOR/FINISH:
- CHROME
- PRODUCT NAME:
- CYLINDER SLEEVE
- UNITS:
- EACH
- CYLINDER BORE COATING:
- CHROME-MOLY ALLOY
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- AC
$117.95
