ATV/UTV Engine
ATV/UTV Engine Parts at JJ Motorsports
Maximize your ATV or UTV's engine life with top-quality components from JJ Motorsports. Our selection includes gasket kits, connecting rods, water pump rebuild kits, and timing plugs designed for reliable sealing, strength, and easy installation in demanding off-road conditions. Compatible with Polaris, Can-Am, Honda, and more, these parts ensure peak power, reduced wear, and efficient operation for trail riding or utility work.
Shop trusted brands like Moose Racing for rebuild kits and Winderosa for gaskets. Explore related categories such as ATV/UTV air and fuel for intake upgrades or ATV/UTV drivetrain for transmission enhancements.
Top ATV/UTV Engine Products
- MOOSE UTILITY Clutch Cover Gasket Seal 500-1265-PU – Durable seal for clutch cover protection.
- WINDEROSA Standard Bore Gasket Kit 810585 – Complete kit for engine sealing and rebuilds.
- WORKS CONNECTION Engine Timing Plug 24-590 – Precision plug for accurate timing adjustments.
- MOOSE RACING Connecting Rod MR5026 – High-strength rod for engine durability.
- MOOSE RACING Water Pump Rebuild Kit 821865 – Comprehensive kit for water pump maintenance.
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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KIBBLEWHITE Exhaust Valve 40-40566
KIBBLEWHITE
$37.55Exhaust valves are critical flow components that directly impact engine efficiency, durability, and peak horsepower. The KIBBLEWHITE 40-40566 Black Diamond™ Exhaust Valve is engineered to withstand extreme combustion temperatures and repetitive cycling...09262658- SKU:
- 09262658
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- APPLICATION:
- EXHAUST
- MATERIAL:
- STAINLESS STEEL
- UNITS:
- EACH
- MODEL:
- BLACK DIAMOND™
- RIDING STYLE:
- ATV
- STEM DIAMETER IMPERIAL:
- 0.2150'
- HEAD DIAMETER METRIC:
- 31.00 MM
- LENGTH IMPERIAL:
- 3.230'
- PRODUCT NAME:
- VALVE
- TULIP ANGLE:
- 20°
$37.55 -
KIBBLEWHITE Valve Guide 82-82170
KIBBLEWHITE
$18.54Valve guide wear is one of the most common culprits behind oil consumption, rough idle, and loss of compression—problems that compound quickly under high RPM or forced induction. The KIBBLEWHITE 82-82170 valve guide uses a proven Ampco-45 copper-nickel...09261694- SKU:
- 09261694
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- INSIDE DIAMETER IMPERIAL:
- 0.2155'
- OUTSIDE DIAMETER IMPERIAL:
- 0.4353'
- RIDING STYLE:
- UTV
- APPLICATION:
- INTAKE
- PRODUCT NAME:
- VALVE GUIDE
- MATERIAL:
- C630 BRONZE
- SIZE IMPERIAL:
- STANDARD
- UNITS:
- EACH
$18.54 -
KIBBLEWHITE Exhaust Valve 82-82258
KIBBLEWHITE
$37.55Exhaust valves endure extreme heat cycles and combustion pressures that degrade standard components—KIBBLEWHITE's Black Diamond™ valves are engineered to outlast and outperform through superior material science and precision manufacturing. Whether you're...09263280- SKU:
- 09263280
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- TULIP ANGLE:
- 25°
- HEAD DIAMETER METRIC:
- 29.21 MM
- RIDING STYLE:
- ATV
- MODEL:
- BLACK DIAMOND™
- STEM DIAMETER IMPERIAL:
- 0.2155'
- UNITS:
- EACH
- APPLICATION:
- EXHAUST
- LENGTH IMPERIAL:
- 3.805'
- MATERIAL:
- STAINLESS STEEL
- PRODUCT NAME:
- VALVE
$37.55 -
KIBBLEWHITE Exhaust Valve - Polaris 500 - Standard 82-82055
KIBBLEWHITE
$37.55OEM exhaust valves wear faster than any other engine component, directly compromising your Polaris 500's combustion efficiency and power output. The Kibblewhite Black Diamond™ valve replaces this critical wear item with a forging that resists corrosion,...09260181- SKU:
- 09260181
- Availability:
- Ships Same Business Day
- Weight:
- 0.11 LBS
- LENGTH IMPERIAL:
- 4.055'
- HEAD DIAMETER METRIC:
- 32.00 MM
- MODEL:
- BLACK DIAMOND™
- RIDING STYLE:
- ATV
- TULIP ANGLE:
- 22°
- APPLICATION:
- EXHAUST
- MATERIAL:
- STAINLESS STEEL
- PRODUCT NAME:
- VALVE
- STEM DIAMETER IMPERIAL:
- 0.2345'
- UNITS:
- EACH
$37.55 -
JE PISTONS Piston Kit 247957
JE PISTONS
$325.99When you're pushing your engine to the limit in professional competition, your pistons need to withstand extreme pressures and temperatures without compromise. JE PISTONS' 247957 Kit is engineered from 2618-T6 forged aluminum—a high-tensile material...09105862- SKU:
- 09105862
- Availability:
- Ships Same Business Day
- Weight:
- 1.41 LBS
- PISTON HEAD SHAPE:
- DISHED
- WALL THICKNESS IMPERIAL:
- 0.160'
- COMPRESSION RATIO IMPERIAL:
- 12.5:1
- PRODUCT NAME:
- PISTON KIT
- RIDING STYLE:
- ATV
- WALL THICKNESS:
- 0,160'
- BORE SIZE METRIC:
- 95.00 MM
- DISPLACEMENT:
- 449 CC
- UNITS:
- KIT
$325.99 -
JE PISTONS Piston Kit 252742
JE PISTONS
$309.99When you're pushing your engine to the absolute limit, your pistons need to handle extreme pressures and temperatures without compromise. JE PISTONS Pro Series delivers the precision engineering and durability required for professional competition and...09105863- SKU:
- 09105863
- Availability:
- Ships Same Business Day
- Weight:
- 1.41 LBS
- BORE SIZE METRIC:
- 95.50 MM
- PISTON HEAD SHAPE:
- DOMED
- UNITS:
- KIT
- WALL THICKNESS IMPERIAL:
- 0.160'
- DISPLACEMENT:
- 450 CC
- PRODUCT NAME:
- PISTON KIT
- RIDING STYLE:
- ATV
- WALL THICKNESS:
- 0,160'
- COMPRESSION RATIO IMPERIAL:
- 13.5:1
$309.99Qty in Cart: 0Quantity:Price:$309.99Subtotal: -
JE PISTONS Piston Kit 252743
JE PISTONS
$309.99If you're pushing your engine to the limit in competition or extreme performance applications, your stock pistons simply won't survive the punishment. JE PISTONS' Pro Series 252743 kit delivers the strength and precision engineering demanded by...09105864- SKU:
- 09105864
- Availability:
- Ships Same Business Day
- Weight:
- 1.41 LBS
- RIDING STYLE:
- ATV
- COMPRESSION RATIO IMPERIAL:
- 12.8:1
- PISTON HEAD SHAPE:
- DOMED
- UNITS:
- KIT
- BORE SIZE METRIC:
- 95.50 MM
- WALL THICKNESS:
- 0,160'
- WALL THICKNESS IMPERIAL:
- 0.160'
- DISPLACEMENT:
- 450 CC
- PRODUCT NAME:
- PISTON KIT
$309.99Qty in Cart: 0Quantity:Price:$309.99Subtotal: -
JE PISTONS Piston Kit 252744
JE PISTONS
$309.99When you're building an engine that needs to survive extreme competition and sustained high RPM, piston quality isn't negotiable. JE Pistons' 252744 kit is purpose-built for professional racing applications where margin for error doesn't exist. These are...09105865- SKU:
- 09105865
- Availability:
- Ships Same Business Day
- Weight:
- 1.16 LBS
- RIDING STYLE:
- ATV
- BORE SIZE METRIC:
- 98.00 MM
- DISPLACEMENT:
- 474 CC
- PRODUCT NAME:
- PISTON KIT
- WALL THICKNESS:
- 0,160'
- WALL THICKNESS IMPERIAL:
- 0.160'
- COMPRESSION RATIO IMPERIAL:
- 12.8:1
- UNITS:
- KIT
- PISTON HEAD SHAPE:
- DOMED
$309.99 -
Cylinder Works Cylinder Head Kit Honda TRX450R 2006-2009 CH1004K01
CYLINDER WORKS
$705.95Upgrade your engine's performance with the CYLINDER WORKS Cylinder Head Kit CH1004K01. This high-quality replacement head is designed for enthusiasts seeking enhanced power and efficiency. Crafted in the U.S.A., it features precision components that...09310884- SKU:
- 09310884
- Availability:
- Ships Same Business Day
- Weight:
- 5.81 LBS
- ENGINE TYPE:
- 4-STROKE
- PRODUCT NAME:
- CYLINDER HEAD KIT
- UNITS:
- KIT
- RIDING STYLE:
- ATV
$705.95 -
Cylinder Works Standard Bore Cylinder Yamaha Raptor 700R 2006-2024 20004
CYLINDER WORKS
$540.95Upgrade your Raptor 700 with the Cylinder Works Standard Cylinder, designed for seamless installation and exceptional performance. This high-quality cylinder is engineered to match OEM specifications, ensuring a perfect fit and reliable operation...09310395- SKU:
- 09310395
- Availability:
- Ships Same Business Day
- Weight:
- 6.75 LBS
- ENGINE TYPE:
- 4-CYCLE
- PRODUCT NAME:
- CYLINDER
- RIDING STYLE:
- ATV
- UNITS:
- EACH
- STYLE:
- STANDARD
- CYLINDER DIAMETER:
- 102,00 MM
- CYLINDER DIAMETER METRIC:
- 102.00 MM
$540.95 -
Cylinder Works Standard Bore Cylinder Kit for Yamaha YXR700F Rhino 700 2008-2013 20104
CYLINDER WORKS
$526.95Upgrade your Rhino 700 with the Cylinder Works Standard Cylinder, designed for seamless installation and exceptional performance. This direct bolt-on cylinder offers a perfect fit, ensuring you get back on the trails with confidence. Crafted in the U.S.A...09310397- SKU:
- 09310397
- Availability:
- Ships Same Business Day
- Weight:
- 6.40 LBS
- CYLINDER DIAMETER:
- 102,00 MM
- CYLINDER DIAMETER METRIC:
- 102.00 MM
- RIDING STYLE:
- UTV
- STYLE:
- STANDARD
- ENGINE TYPE:
- 4-CYCLE
- PRODUCT NAME:
- CYLINDER
- RIDING STYLE:
- ATV
- UNITS:
- EACH
$526.95 -
Cylinder Works High Compression Cylinder Kit Yamaha YFZ450R 2009-2017 20003-K02HC
CYLINDER WORKS
$788.95Elevate your engine's performance with the CYLINDER WORKS High Compression Cylinder Kit. Designed for effortless installation, this kit offers a perfect fit and enhanced durability, ensuring your engine runs smoothly and efficiently. With high-quality...09310377- SKU:
- 09310377
- Availability:
- Ships Same Business Day
- Weight:
- 4.65 LBS
- CYLINDER BORE COATING:
- NICKEL-SILICON CARBIDE
- UNITS:
- KIT
- CYLINDER DIAMETER:
- 95,00 MM
- RIDING STYLE:
- ATV
- STYLE:
- HIGH COMPRESSION
- COMPRESSION RATIO IMPERIAL:
- 13.5:1
- CYLINDER DIAMETER METRIC:
- 95.00 MM
- DISPLACEMENT:
- 449 CC
- ENGINE TYPE:
- 4-CYCLE
- PRODUCT NAME:
- CYLINDER KIT
$788.95 -
Cylinder Works Yamaha YFM700R Raptor 2006-2014 Big Bore Cylinder Kit 21004-K01
CYLINDER WORKS
$1,011.95Enhance your engine's performance with the CYLINDER WORKS Big Bore Cylinder Kit. Designed for a seamless fit, this ready-to-install kit delivers superior durability and efficiency without the need for re-plating. Experience improved power and reduced...09310380- SKU:
- 09310380
- Availability:
- Ships Same Business Day
- Weight:
- 9.12 LBS
- CYLINDER BORE COATING:
- NICKEL-SILICON CARBIDE
- CYLINDER DIAMETER:
- 105,00 MM
- CYLINDER DIAMETER METRIC:
- 105.00 MM
- OVERBORE METRIC:
- +3.00 MM
- PRODUCT NAME:
- CYLINDER KIT
- STYLE:
- BIG BORE
- UNITS:
- KIT
- COMPRESSION RATIO IMPERIAL:
- 9.2:1
- RIDING STYLE:
- ATV
- DISPLACEMENT:
- 727 CC
- ENGINE TYPE:
- 4-CYCLE
$1,011.95 -
Cylinder Works Standard Bore Cylinder Kit for Honda TRX-450R 2004-2005 10003-K01
CYLINDER WORKS
$664.95Experience enhanced performance and reliability with the CYLINDER WORKS Cylinder Kit. Designed as a direct bolt-on replacement, this kit ensures a seamless installation while maintaining the look and feel of original equipment. Featuring high-quality...09310284- SKU:
- 09310284
- Availability:
- Ships Same Business Day
- Weight:
- 5.10 LBS
- COMPRESSION RATIO IMPERIAL:
- 10.5:1
- CYLINDER BORE COATING:
- NICKEL-SILICON CARBIDE
- CYLINDER DIAMETER:
- 94,00 MM
- CYLINDER DIAMETER METRIC:
- 94.00 MM
- STYLE:
- STANDARD
- ENGINE TYPE:
- 4-CYCLE
- RIDING STYLE:
- ATV
- DISPLACEMENT:
- 449 CC
- PRODUCT NAME:
- CYLINDER KIT
- UNITS:
- KIT
$664.95 -
Cylinder Works Standard Bore Cylinder Kit for Suzuki LT-R450 2006-2009 40002-K01
CYLINDER WORKS
$744.95Upgrade your engine with the CYLINDER WORKS Cylinder Kit, designed for seamless installation and optimal performance. This kit offers a perfect blend of durability and efficiency, ensuring your engine runs smoothly while maintaining a look identical to...09310286- SKU:
- 09310286
- Availability:
- Ships Same Business Day
- Weight:
- 4.25 LBS
- CYLINDER BORE COATING:
- NICKEL-SILICON CARBIDE
- CYLINDER DIAMETER:
- 95,50 MM
- UNITS:
- KIT
- RIDING STYLE:
- ATV
- CYLINDER DIAMETER METRIC:
- 95.50 MM
- DISPLACEMENT:
- 449 CC
- ENGINE TYPE:
- 4-CYCLE
- PRODUCT NAME:
- CYLINDER KIT
- COMPRESSION RATIO IMPERIAL:
- 11.7:1
- STYLE:
- STANDARD
$744.95 -
Cylinder Works High Compression Cylinder Kit Honda TRX450R 2004-2005 10003-K01HC
CYLINDER WORKS
$731.95Elevate your engine's performance with the CYLINDER WORKS High Compression Cylinder Kit. Designed for easy installation, this kit offers a perfect fit without the need for re-plating, ensuring a seamless upgrade that mirrors OEM specifications...09310301- SKU:
- 09310301
- Availability:
- Ships Same Business Day
- Weight:
- 5.10 LBS
- ENGINE TYPE:
- 4-CYCLE
- PRODUCT NAME:
- CYLINDER KIT
- CYLINDER DIAMETER:
- 94,00 MM
- DISPLACEMENT:
- 450 CC
- COMPRESSION RATIO IMPERIAL:
- 13.1:1
- CYLINDER BORE COATING:
- NICKEL-SILICON CARBIDE
- UNITS:
- KIT
- CYLINDER DIAMETER METRIC:
- 94.00 MM
- RIDING STYLE:
- ATV
- STYLE:
- HIGH COMPRESSION
$731.95 -
Cylinder Works High Compression Cylinder Kit Yamaha YFZ450 2004-2013 20001-K01HC
CYLINDER WORKS
$788.95Elevate your engine's performance with the High Compression Cylinder Kit designed for seamless installation. This ready-to-use, direct bolt-on kit mirrors the quality and appearance of OEM cylinders while enhancing durability and efficiency. With Vertex...09310304- SKU:
- 09310304
- Availability:
- Ships Same Business Day
- Weight:
- 4.85 LBS
- COMPRESSION RATIO IMPERIAL:
- 13.0:1
- CYLINDER DIAMETER:
- 95,00 MM
- CYLINDER DIAMETER METRIC:
- 95.00 MM
- DISPLACEMENT:
- 449 CC
- ENGINE TYPE:
- 2-CYCLE
- PRODUCT NAME:
- CYLINDER KIT
- STYLE:
- HIGH COMPRESSION
- CYLINDER BORE COATING:
- NICKEL-SILICON CARBIDE
- RIDING STYLE:
- ATV
- UNITS:
- KIT
$788.95 -
Cylinder Works Standard Bore Cylinder for Honda TRX450R 2006-2009 10005
CYLINDER WORKS
$380.95Upgrade your engine's performance with the Cylinder Works Standard 10005, a high-quality, ready-to-install cylinder designed for seamless integration. Engineered to meet the highest standards, this cylinder offers exceptional durability and reliability,...09310165- SKU:
- 09310165
- Availability:
- Ships Same Business Day
- Weight:
- 3.50 LBS
- CYLINDER BORE COATING:
- NICKEL-SILICON CARBIDE
- CYLINDER DIAMETER:
- 96,00 MM
- OVERBORE METRIC:
- STANDARD
- STYLE:
- STANDARD
- RIDING STYLE:
- ATV
- UNITS:
- EACH
- COMPRESSION RATIO IMPERIAL:
- 12.0:1
- DISPLACEMENT:
- 449 CC
- ENGINE TYPE:
- 4-CYCLE
- PRODUCT NAME:
- CYLINDER
- CYLINDER DIAMETER METRIC:
- 96.00 MM
$380.95 -
Cylinder Works Big Bore Gasket Kit for Kawasaki Teryx4 2012 31007-G01
CYLINDER WORKS
$150.95Elevate your engine's performance with the CYLINDER WORKS Big Bore Gasket Kit 31007-G01. This comprehensive kit provides everything you need for a seamless installation, ensuring optimal power and durability without the need for extensive modifications...09343135- SKU:
- 09343135
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
- UNITS:
- KIT
- STYLE:
- BIG BORE
- PRODUCT NAME:
- GASKET KIT
- RIDING STYLE:
- ATV
- TYPE:
- TOP END
- MATERIAL:
- NICKEL SILICON CARBIDE
$150.95 -
Cylinder Works Big Bore Gasket Kit for Polaris RZR 900 XP 2011-2014 61001-G01
CYLINDER WORKS
$183.95Enhance your engine's performance with the CYLINDER WORKS Big Bore Gasket Kit 61001-G01. This ready-to-install kit features high-quality components that ensure a perfect fit and optimal functionality, making it an ideal choice for enthusiasts seeking...09343138- SKU:
- 09343138
- Availability:
- Ships Same Business Day
- Weight:
- 0.35 LBS
- PRODUCT NAME:
- GASKET KIT
- TYPE:
- TOP END
- MATERIAL:
- NICKEL SILICON CARBIDE
- RIDING STYLE:
- UTV
- STYLE:
- BIG BORE
- UNITS:
- KIT
$183.95
