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
-
On Sale
Wossner Connecting Rod Honda TRX450R 2004-2005 P4022
WOSSNER
MSRP: $174.00Now: $165.30Was: $174.00A connecting rod is the critical link between your crankshaft and piston—failure here means catastrophic engine damage. Wössner's forged 8620 alloy construction and shot-peened finish deliver the...09230569- SKU:
- 09230569
- Availability:
- Ships Same Business Day
- Weight:
- 2.11 LBS
- ENGINE TYPE:
- 4-STROKE
- PRODUCT NAME:
- CONNECTING ROD KIT
- RIDING STYLE:
- ATV
- UNITS:
- KIT
- STYLE:
- STANDARD
MSRP: $174.00Now: $165.30Was: $174.00 -
Wrench Rabbit Complete Engine Rebuild Kit for 2019-2020 Polaris RZR XP 1000 WR00053
WRENCH RABBIT
$2,094.70Engine wear and internal component degradation will eventually compromise power delivery and reliability—a complete rebuild addresses this before catastrophic failure occurs. The Wrench Rabbit Engine...09031657- SKU:
- 09031657
- Availability:
- Ships Same Business Day
- Weight:
- 31.80 LBS
- RIDING STYLE:
- ATV
- UNITS:
- KIT
- PRODUCT NAME:
- REBUILD KIT
- TYPE:
- ENGINE
- RIDING STYLE:
- UTV
$2,094.70 -
Wrench Rabbit Engine Rebuild Kit for Polaris RZR 1000 2016-2017 WR00054
WRENCH RABBIT
$1,994.95When your Polaris RZR 1000's engine shows signs of wear—loss of compression, increased blow-by, or metal debris in the oil—a full rebuild is the most cost-effective path to restoring factory...09031658- SKU:
- 09031658
- Availability:
- Ships Same Business Day
- Weight:
- 27.90 LBS
- RIDING STYLE:
- ATV
- PRODUCT NAME:
- REBUILD KIT
- TYPE:
- ENGINE
- UNITS:
- KIT
- RIDING STYLE:
- UTV
$1,994.95Qty in Cart: 0Quantity:Price:$1,994.95Subtotal: -
Wrench Rabbit Engine Rebuild Kit for 2019 Polaris Ranger XP 1000 EPS WR00055
WRENCH RABBIT
$2,094.70When your Polaris Ranger XP 1000 EPS engine reaches the end of its service life, a complete rebuild is often more cost-effective than replacement. The Wrench Rabbit WR00055 Engine Rebuild Kit...09031659- SKU:
- 09031659
- Availability:
- Ships Same Business Day
- Weight:
- 25.00 LBS
- RIDING STYLE:
- UTV
- PRODUCT NAME:
- REBUILD KIT
- TYPE:
- ENGINE
- UNITS:
- KIT
- RIDING STYLE:
- ATV
$2,094.70 -
WSM Piston Kit - Kawasaki 750 - +.50 mm 50-258-05K
WSM
$124.29If you're rebuilding or refreshing your Kawasaki 750 engine, piston quality directly impacts reliability, power output, and engine longevity. WSM's +.50mm piston kit delivers OEM-matching...09103546- SKU:
- 09103546
- Availability:
- Ships Same Business Day
- Weight:
- 0.95 LBS
- BORE - OVERSIZE:
- +0,50 MM
- BORE - OVERSIZE METRIC:
- +0.50 MM
- PISTON MATERIAL:
- ALUMINUM
- RIDING STYLE:
- UTV
- UNITS:
- KIT
- MODEL:
- ORIGINAL
- PRODUCT NAME:
- PISTON KIT
- RIDING STYLE:
- ATV
- BORE SIZE METRIC:
- 85.50 MM
$124.29 -
WSM Top End Kit - .75mm - Kawasaki 54-255-13
WSM
$125.25A worn or damaged top end directly impacts engine compression, power delivery, and fuel efficiency—making this comprehensive piston kit essential for restoring your Kawasaki to factory performance...09031384- SKU:
- 09031384
- Availability:
- Ships Same Business Day
- Weight:
- 1.40 LBS
- OVERBORE METRIC:
- +0.75 MM
- UNITS:
- KIT
- PRODUCT NAME:
- PISTON KIT
- RIDING STYLE:
- ATV
$125.25Qty in Cart: 0Quantity:Price:$125.25Subtotal: -
WSM Top End Kit - 1mm - Kawasaki 54-255-14
WSM
$134.15A top-end rebuild is critical maintenance for any 4-stroke engine pushing serious hours or performance demands. The WSM Top End Kit delivers everything you need for a complete piston assembly...09031385- SKU:
- 09031385
- Availability:
- Ships Same Business Day
- Weight:
- 1.65 LBS
- OVERBORE METRIC:
- +1.00 MM
- RIDING STYLE:
- ATV
- PRODUCT NAME:
- PISTON KIT
- UNITS:
- KIT
$134.15 -
WSM Top End Kit - Standard - Kawasaki 54-255-20
WSM
$139.34A worn or damaged top end compromises engine efficiency, power output, and reliability. The WSM Top End Kit delivers OEM-quality components engineered to restore your engine to factory specifications...09031386- SKU:
- 09031386
- Availability:
- Ships Same Business Day
- Weight:
- 2.10 LBS
- RIDING STYLE:
- ATV
- UNITS:
- KIT
- OVERBORE METRIC:
- STANDARD
- PRODUCT NAME:
- PISTON KIT
$139.34Qty in Cart: 0Quantity:Price:$139.34Subtotal: -
WSM Top End Kit - .5mm - Kawasaki 54-255-22
WSM
$139.34A properly functioning top end is critical to maintaining peak engine performance and reliability in your 4-stroke Kawasaki. This WSM Top End Kit delivers all the precision components you need for a...09031388- SKU:
- 09031388
- Availability:
- Ships Same Business Day
- Weight:
- 2.10 LBS
- RIDING STYLE:
- ATV
- UNITS:
- KIT
- OVERBORE METRIC:
- +0.50 MM
- PRODUCT NAME:
- PISTON KIT
$139.34 -
WSM Top End Kit - 1mm - Kawasaki 54-255-24
WSM
$139.34A worn top end compromises your engine's compression ratio, power delivery, and overall reliability—especially if you're pushing hard on the track or trail. The WSM Top End Kit delivers OEM-quality...09031390- SKU:
- 09031390
- Availability:
- Ships Same Business Day
- Weight:
- 2.00 LBS
- UNITS:
- KIT
- RIDING STYLE:
- ATV
- OVERBORE METRIC:
- +1.00 MM
- PRODUCT NAME:
- PISTON KIT
$139.34 -
WSM Top End Kit - Standard - Kawasaki 54-257-10
WSM
$146.14A worn or damaged top end compromises engine efficiency, power delivery, and reliability—especially in racing applications where precision is non-negotiable. The WSM Top End Kit gives you OEM-quality...09031391- SKU:
- 09031391
- Availability:
- Ships Same Business Day
- Weight:
- 1.75 LBS
- UNITS:
- KIT
- OVERBORE METRIC:
- STANDARD
- RIDING STYLE:
- ATV
- PRODUCT NAME:
- PISTON KIT
$146.14Qty in Cart: 0Quantity:Price:$146.14Subtotal: -
MOOSE RACING Crank Bearings and Seals - LT250R 24-1037
MOOSE RACING
$90.95Worn crank bearings and seals are silent killers of 2-stroke performance—they increase friction, reduce power transfer, and can lead to catastrophic engine failure if left unchecked. The MOOSE RACING...09240001- SKU:
- 09240001
- Availability:
- Ships Same Business Day
- Weight:
- 1.10 LBS
- PRODUCT NAME:
- BEARING
- RIDING STYLE:
- ATV
- UNITS:
- KIT
- TYPE:
- BALL
- APPLICATION:
- CRANKSHAFT
$90.95 -
EMGO Oil Filter 10-79120
EMGO
$7.69Engine longevity depends on clean oil circulating through your engine, and a quality oil filter is your first line of defense against contaminant buildup that accelerates wear. The EMGO 10-79120 uses...1079120- SKU:
- 1079120
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- FEATURES:
- STANDARD
- RIDING STYLE:
- ATV
- RIDING STYLE:
- STREET
- UNITS:
- EACH
- BASE COLOR:
- WHITE
- FILTER MEDIA MATERIAL:
- PAPER
- COLOR/FINISH:
- WHITE
- RIDING STYLE:
- OFF-ROAD
- PRODUCT NAME:
- ELEMENT
- RIDING STYLE:
- UTV
- TYPE:
- OIL FILTER
$7.69 -
EMGO Oil Filter 10-55500
EMGO
$4.15Clean oil is the foundation of engine longevity, and a quality filter is non-negotiable for maintaining optimal performance and protection. The EMGO Oil Filter 10-55500 uses premium...1055500- SKU:
- 1055500
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
- COLOR/FINISH:
- YELLOW
- PRODUCT NAME:
- OIL FILTER
- RIDING STYLE:
- STREET
- TYPE:
- CARTRIDGE
- BASE COLOR:
- YELLOW
- FEATURES:
- STANDARD
- RIDING STYLE:
- ATV
- FILTER MEDIA MATERIAL:
- PAPER
$4.15 -
EMGO Oil Filter 10-24410
EMGO
$7.38Proper oil filtration is non-negotiable for engine longevity and performance—contaminated oil accelerates wear on critical components and reduces overall reliability. The EMGO Oil Filter 10-24410...1024410- SKU:
- 1024410
- Availability:
- Ships Same Business Day
- Weight:
- 0.50 LBS
- COLOR/FINISH:
- BLACK
- FEATURES:
- SPIN-ON
- UNITS:
- EACH
- FILTER MEDIA MATERIAL:
- PAPER
- PRODUCT NAME:
- OIL FILTER
- RIDING STYLE:
- UTV
- TYPE:
- SPIN-ON
- BASE COLOR:
- BLACK
$7.38 -
EMGO Oil Filter 10-26990
EMGO
$9.08Engine longevity depends on consistent oil quality, and contamination is the silent killer of internal components. The EMGO Oil Filter 10-26990 uses premium paper, metal, and rubber construction to...07120421- SKU:
- 07120421
- Availability:
- Ships Same Business Day
- Weight:
- 0.75 LBS
- FEATURES:
- SPIN-ON
- RIDING STYLE:
- ATV
- UNITS:
- EACH
- PRODUCT NAME:
- OIL FILTER
- TYPE:
- SPIN-ON
- BASE COLOR:
- BLACK
- COLOR/FINISH:
- BLACK
$9.08Qty in Cart: 0Quantity:Price:$9.08Subtotal: -
EMGO Oil Filter 10-99240
EMGO
$5.23Engine longevity depends on clean oil circulating through your engine's critical components—and that starts with a quality filter. The EMGO Oil Filter 10-99240 uses premium paper, metal, and rubber...07120420- SKU:
- 07120420
- Availability:
- Ships Same Business Day
- Weight:
- 0.21 LBS
- FEATURES:
- STANDARD
- RIDING STYLE:
- ATV
- BASE COLOR:
- YELLOW
- UNITS:
- EACH
- COLOR/FINISH:
- YELLOW
- PRODUCT NAME:
- ELEMENT
- TYPE:
- OIL FILTER
$5.23 -
EMGO Oil Filter 10-26968
EMGO
$4.77Clean oil is the foundation of engine longevity, and a high-quality filter is non-negotiable for maintaining optimal performance and protection. The EMGO Oil Filter 10-26968 uses premium materials...07120406- SKU:
- 07120406
- Availability:
- Ships Same Business Day
- Weight:
- 0.11 LBS
- COLOR/FINISH:
- YELLOW
- BASE COLOR:
- YELLOW
- PRODUCT NAME:
- ELEMENT
- TYPE:
- OIL FILTER
- FEATURES:
- STANDARD
- RIDING STYLE:
- ATV
- UNITS:
- EACH
$4.77 -
BOYESEN Impeller/Waterpump Cover - Black WPK-28B
BOYESEN
$219.95Engine cooling performance directly impacts reliability and longevity, especially under sustained high-RPM operation. The Boyesen WPK-28B delivers increased coolant flow across your entire RPM range,...09401084- SKU:
- 09401084
- Availability:
- Ships Same Business Day
- Weight:
- 0.50 LBS
- BASE COLOR:
- BLACK
- MODEL:
- SUPERCOOLER
- TYPE:
- WATER PUMP
- BASE FINISH:
- POWDER-COATED
- COLOR/FINISH:
- BLACK
- MATERIAL:
- ALUMINUM
- UNITS:
- KIT
- COLOR/FINISH:
- POWDER-COATED
- PRODUCT NAME:
- COVER AND IMPELLER KIT
- RIDING STYLE:
- ATV
$219.95 -
BOYESEN Impeller/Waterpump Cover - Black WPK-08B
BOYESEN
$194.95Engine temperature stability directly impacts performance, reliability, and longevity—especially under sustained high-RPM operation. The Boyesen WPK-08B water pump cover and impeller assembly...09400561- SKU:
- 09400561
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
- MATERIAL:
- ALUMINUM
- BASE COLOR:
- BLACK
- TYPE:
- WATER PUMP
- BASE FINISH:
- POWDER-COATED
- COLOR/FINISH:
- BLACK
- UNITS:
- KIT
- COLOR/FINISH:
- POWDER-COATED
- MODEL:
- SUPERCOOLER
- PRODUCT NAME:
- COVER AND IMPELLER KIT
- RIDING STYLE:
- OFF-ROAD
$194.95Qty in Cart: 0Quantity:Price:$194.95Subtotal:
