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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WSM Top End Kit - .5mm - Honda 54-228-12
WSM
$177.95A worn or damaged top end directly compromises your engine's compression, power delivery, and reliability. The WSM Top End Kit gives you everything needed for a complete piston and gasket refresh,...09031353- SKU:
- 09031353
- Availability:
- Ships Same Business Day
- Weight:
- 2.15 LBS
- OVERBORE METRIC:
- +0.50 MM
- PRODUCT NAME:
- PISTON KIT
- RIDING STYLE:
- ATV
- UNITS:
- KIT
$177.95Qty in Cart: 0Quantity:Price:$177.95Subtotal: -
WSM Top End Kit - .75mm - Honda 54-228-13
WSM
$177.95A seized or worn top end forces you to choose between costly machine shop delays or unreliable DIY guesswork. The WSM Top End Kit delivers everything needed for a complete, factory-correct rebuild in...09031354- SKU:
- 09031354
- Availability:
- Ships Same Business Day
- Weight:
- 2.10 LBS
- PRODUCT NAME:
- PISTON KIT
- RIDING STYLE:
- ATV
- OVERBORE METRIC:
- +0.75 MM
- UNITS:
- KIT
$177.95Qty in Cart: 0Quantity:Price:$177.95Subtotal: -
WSM Top End Kit - Standard - Honda 54-229-10
WSM
$144.99A worn or damaged top end directly kills engine performance and reliability—this comprehensive piston kit restores your Honda's compression, combustion efficiency, and power delivery with...09031356- SKU:
- 09031356
- Availability:
- Ships Same Business Day
- Weight:
- 1.50 LBS
- PRODUCT NAME:
- PISTON KIT
- OVERBORE METRIC:
- STANDARD
- RIDING STYLE:
- ATV
- UNITS:
- KIT
$144.99 -
WSM Top End Kit - 1mm - Honda 54-226-14
WSM
$155.89A worn or damaged top end directly cuts into power output and reliability—rebuilding with quality components restores your engine's original performance envelope. The WSM Top End Kit delivers...09031345- SKU:
- 09031345
- Availability:
- Ships Same Business Day
- Weight:
- 1.80 LBS
- PRODUCT NAME:
- PISTON KIT
- UNITS:
- KIT
- OVERBORE METRIC:
- +1.00 MM
- RIDING STYLE:
- ATV
$155.89 -
WSM Top End Kit - Standard - Honda 54-227-10
WSM
$149.94A top-end rebuild demands precision components that restore your engine's compression, sealing, and reliability—and this WSM kit delivers exactly that. Whether you're rebuilding after high-mileage...09031346- SKU:
- 09031346
- Availability:
- Ships Same Business Day
- Weight:
- 2.10 LBS
- RIDING STYLE:
- ATV
- UNITS:
- KIT
- OVERBORE METRIC:
- STANDARD
- PRODUCT NAME:
- PISTON KIT
$149.94Qty in Cart: 0Quantity:Price:$149.94Subtotal: -
WSM Top End Kit - .25mm - Honda 54-227-11
WSM
$157.44A top-end rebuild is essential for restoring compression, sealing, and performance in high-mileage 4-stroke engines. The WSM Top End Kit delivers OEM-quality components in a single package,...09031347- SKU:
- 09031347
- Availability:
- Ships Same Business Day
- Weight:
- 1.95 LBS
- OVERBORE METRIC:
- +0.25 MM
- RIDING STYLE:
- ATV
- UNITS:
- KIT
- PRODUCT NAME:
- PISTON KIT
$157.44 -
WSM Top End Kit - Standard - Honda 54-228-10
WSM
$177.95A worn top end compromises compression, throttle response, and fuel efficiency—costing you power and reliability on every run. The WSM Top End Kit delivers OEM-equivalent quality components...09031351- SKU:
- 09031351
- Availability:
- Ships Same Business Day
- Weight:
- 2.15 LBS
- OVERBORE METRIC:
- STANDARD
- PRODUCT NAME:
- PISTON KIT
- UNITS:
- KIT
- RIDING STYLE:
- ATV
$177.95 -
MOOSE UTILITY Oneway Clutch Bearing - Honda 11-911
MOOSE UTILITY
$75.95A worn or failing one-way clutch bearing will rob your engine of efficiency and compromise clutch engagement reliability. The MOOSE UTILITY Oneway Clutch Bearing (11-911) restores OEM performance...09240424- SKU:
- 09240424
- Availability:
- Ships Same Business Day
- Weight:
- 0.21 LBS
- APPLICATION:
- CLUTCH
- RIDING STYLE:
- ATV
- PRODUCT NAME:
- BEARING
- UNITS:
- EACH
$75.95 -
MOOSE UTILITY Oneway Clutch Bearing - Yamaha 11-913
MOOSE UTILITY
$75.95A one-way clutch bearing is critical to your Yamaha's drivetrain reliability—it prevents backspinning and ensures smooth power delivery under load. This OEM replacement from MOOSE Utility restores...09240426- SKU:
- 09240426
- Availability:
- Ships Same Business Day
- Weight:
- 0.16 LBS
- APPLICATION:
- CLUTCH
- PRODUCT NAME:
- BEARING
- RIDING STYLE:
- ATV
- UNITS:
- EACH
$75.95Qty in Cart: 0Quantity:Price:$75.95Subtotal: -
MOOSE UTILITY Oneway Clutch Bearing 11-932
MOOSE UTILITY
$90.95A worn or failing one-way clutch bearing compromises your drivetrain's ability to engage and disengage smoothly, leading to slippage, noise, and potential damage to connected components. The MOOSE...09240581- SKU:
- 09240581
- Availability:
- Ships Same Business Day
- Weight:
- 0.06 LBS
- PRODUCT NAME:
- BEARING
- APPLICATION:
- STARTER
- RIDING STYLE:
- ATV
- UNITS:
- EACH
$90.95 -
MOOSE UTILITY Oneway Clutch Bearing 11-934
MOOSE UTILITY
$106.95A worn or failing one-way clutch bearing will compromise your drivetrain's efficiency and create costly power loss during acceleration and load transfer. The MOOSE UTILITY 11-934 is an OEM-grade...09240583- SKU:
- 09240583
- Availability:
- Ships Same Business Day
- Weight:
- 0.11 LBS
- APPLICATION:
- STARTER
- PRODUCT NAME:
- BEARING
- RIDING STYLE:
- ATV
- UNITS:
- EACH
$106.95 -
MOOSE UTILITY Oneway Clutch Bearing 11-935
MOOSE UTILITY
$102.95A worn or failing one-way clutch bearing will compromise power delivery and create unpredictable drivetrain behavior—especially critical in high-load racing applications. The MOOSE UTILITY 11-935...09240584- SKU:
- 09240584
- Availability:
- Ships Same Business Day
- Weight:
- 0.06 LBS
- PRODUCT NAME:
- BEARING
- APPLICATION:
- STARTER
- RIDING STYLE:
- ATV
- UNITS:
- EACH
$102.95 -
On Sale
EPI Clutch Cover Gasket WE590001
EPI
MSRP: $21.99Now: $19.79Was: $21.99A failing clutch cover gasket compromises your engine's seal integrity and can lead to oil seepage, contamination, and accelerated wear on critical drivetrain components. The EPI Clutch Cover Gasket...09343437- SKU:
- 09343437
- Availability:
- Ships Same Business Day
- Weight:
- 0.21 LBS
- PRODUCT NAME:
- GASKET
- UNITS:
- EACH
- RIDING STYLE:
- ATV
- TYPE:
- CLUTCH COVER
MSRP: $21.99Now: $19.79Was: $21.99 -
On Sale
EPI Clutch Cover Gasket WE590002
EPI
MSRP: $21.99Now: $19.79Was: $21.99A leaking clutch cover gasket compromises your entire drivetrain's integrity, allowing fluid loss that degrades performance and risks catastrophic clutch failure. The EPI WE590002 delivers...09343438- SKU:
- 09343438
- Availability:
- Ships Same Business Day
- Weight:
- 0.26 LBS
- PRODUCT NAME:
- GASKET
- RIDING STYLE:
- UTV
- TYPE:
- CLUTCH COVER
- RIDING STYLE:
- ATV
- UNITS:
- EACH
MSRP: $21.99Now: $19.79Was: $21.99 -
Twin Air Oil Filter for Yamaha 1976-2018 Models 140010
TWIN AIR
$11.95A quality oil filter is non-negotiable for engine longevity—it's your first line of defense against abrasive particles that compromise bearing clearances and ring seal integrity. The Twin Air 140010...140010- SKU:
- 140010
- Availability:
- Ships Same Business Day
- Weight:
- 0.16 LBS
- TYPE:
- CARTRIDGE
- UNITS:
- EACH
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- STYLE:
- STANDARD
- FILTER MEDIA MATERIAL:
- PAPER
- PRODUCT NAME:
- OIL FILTER
- RIDING STYLE:
- OFF-ROAD
$11.95 -
MOOSE OFFROAD Clutch Cover Gasket Seal - Polaris 100-4077-PU
MOOSE OFFROAD
$19.95A failed clutch cover gasket seal compromises your Polaris's reliability and invites oil seepage that accelerates wear on internal components. This OE-quality replacement restores a proper seal,...09351190- SKU:
- 09351190
- Availability:
- Ships Same Business Day
- Weight:
- 0.11 LBS
$19.95Qty in Cart: 0Quantity:Price:$19.95Subtotal: -
MOOSE OFFROAD Differential Seal Kit - Kawasaki - Front 25-2120-5
MOOSE OFFROAD
$42.95Differential seal failure compromises drivetrain integrity and invites contamination that accelerates bearing wear. This complete seal kit restores proper sealing surfaces and eliminates fluid...09351206- SKU:
- 09351206
- Availability:
- Ships Same Business Day
- Weight:
- 0.31 LBS
$42.95 -
Cylinder Works High Compression Cylinder Kit 85.00 mm Kawasaki Teryx 2012-2013 CW30013K04HC
CYLINDER WORKS
$1,171.95If you're running a 2012-2013 Kawasaki Teryx and want measurable gains in power output without the expense and downtime of a full engine rebuild, this High Compression Cylinder Kit delivers. The...09311090- SKU:
- 09311090
- Availability:
- Ships Same Business Day
- Weight:
- 0.01 LBS
$1,171.95 -
Cylinder Works Standard Bore Cylinder Kit 93mm 9:1 Compression 2017 Polaris RZR XP Turbo CW60008K02
CYLINDER WORKS
$1,003.95When your RZR XP Turbo's engine is pushing limits, a worn cylinder and piston kit becomes a bottleneck to reliability and peak performance. This Cylinder Works Standard Bore kit restores your engine...09311122- SKU:
- 09311122
- Availability:
- Ships Same Business Day
- Weight:
- 10.45 LBS
$1,003.95Qty in Cart: 0Quantity:Price:$1,003.95Subtotal: -
Cylinder Works 93mm Cylinder for 2016-2023 Polaris RZR XP Turbo CW60008
CYLINDER WORKS
$608.95Factory cylinders wear down from aggressive riding and heat cycles—especially in turbocharged applications like the RZR XP Turbo. This 93mm Cylinder Works replacement restores your engine's...09311120- SKU:
- 09311120
- Availability:
- Ships Same Business Day
- Weight:
- 7.44 LBS
$608.95
