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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BOYESEN Clutch Cover - Gold - YFZ450 CC-38AM
BOYESEN
$95.95A quality clutch cover protects one of your YFZ450's most critical drivetrain components while contributing to your bike's overall aesthetic. The Boyesen Gold clutch cover combines lightweight...09400551- SKU:
- 09400551
- Availability:
- Ships Same Business Day
- Weight:
- 0.85 LBS
- COLOR/FINISH:
- MAGNESIUM
- COLOR/FINISH:
- POWDER-COATED
- PRODUCT NAME:
- COVER
- UNITS:
- EACH
- MODEL:
- FACTORY RACING
- RIDING STYLE:
- ATV
- TYPE:
- CLUTCH
$95.95Qty in Cart: 0Quantity:Price:$95.95Subtotal: -
BOYESEN Clutch Cover - Black - YFZ450 CC-38AB
BOYESEN
$95.95A clutch cover is often overlooked, but it's one of the first components to take a beating during hard riding—and a failed seal can mean catastrophic engine damage. The BOYESEN Clutch Cover delivers...09400550- SKU:
- 09400550
- Availability:
- Ships Same Business Day
- Weight:
- 0.85 LBS
- COLOR/FINISH:
- BLACK
- COLOR/FINISH:
- POWDER-COATED
- MODEL:
- FACTORY RACING
- PRODUCT NAME:
- COVER
- RIDING STYLE:
- ATV
- UNITS:
- EACH
- TYPE:
- CLUTCH
$95.95Qty in Cart: 0Quantity:Price:$95.95Subtotal: -
BOYESEN Impeller/Waterpump Cover WPK-80B
BOYESEN
$194.95Engine temperatures spike under sustained load, compromising reliability and performance potential. The BOYESEN WPK-80B water pump cover and impeller assembly increases coolant flow across all RPM...09320166- SKU:
- 09320166
- Availability:
- Ships Same Business Day
- Weight:
- 0.55 LBS
- MATERIAL:
- ALUMINUM
- BASE FINISH:
- POWDER-COATED
- COLOR/FINISH:
- BLACK
- PRODUCT NAME:
- COVER AND IMPELLER KIT
- UNITS:
- KIT
- COLOR/FINISH:
- POWDER-COATED
- MODEL:
- SUPERCOOLER
- RIDING STYLE:
- ATV
- TYPE:
- WATER PUMP
- BASE COLOR:
- BLACK
$194.95 -
HOT RODS Seal Output Shaft OSK0041
HOT RODS
$38.95A leaking countershaft seal doesn't just waste oil—it compromises engine reliability and creates a mess in your garage or on the track. The HOT RODS Seal Output Shaft kit gives you everything needed...09350553- SKU:
- 09350553
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- APPLICATION:
- COUNTERSHAFT
- APPLICATION:
- TRANSMISSION
- RIDING STYLE:
- ATV
- UNITS:
- KIT
- PRODUCT NAME:
- SEAL
$38.95Qty in Cart: 0Quantity:Price:$38.95Subtotal: -
HOT RODS Seal Output Shaft OSK0042
HOT RODS
$38.95A leaking countershaft seal will compromise your transmission's integrity and lead to costly internal damage if left unaddressed. This complete HOT RODS repair kit eliminates the guesswork by...09350554- SKU:
- 09350554
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
- APPLICATION:
- COUNTERSHAFT
- APPLICATION:
- TRANSMISSION
- RIDING STYLE:
- ATV
- UNITS:
- KIT
- PRODUCT NAME:
- SEAL
$38.95 -
HOT RODS Seal Output Shaft OSK0043
HOT RODS
$13.95A leaking countershaft seal doesn't just waste oil—it compromises your transmission's reliability and can lead to costly damage if ignored. The HOT RODS Seal Output Shaft kit (OSK0043) gives you...09350555- SKU:
- 09350555
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- APPLICATION:
- COUNTERSHAFT
- APPLICATION:
- TRANSMISSION
- RIDING STYLE:
- ATV
- PRODUCT NAME:
- SEAL
- UNITS:
- KIT
$13.95 -
HOT RODS Seal Output Shaft OSK0046
HOT RODS
$35.95A leaking countershaft seal will compromise your transmission's integrity and leave you stranded at the track or on the road. The HOT RODS Seal Output Shaft kit delivers everything needed to stop the...09350558- SKU:
- 09350558
- Availability:
- Ships Same Business Day
- Weight:
- 0.26 LBS
- PRODUCT NAME:
- SEAL
- APPLICATION:
- COUNTERSHAFT
- APPLICATION:
- TRANSMISSION
- RIDING STYLE:
- ATV
- UNITS:
- KIT
$35.95 -
HOT RODS Seal Output Shaft OSK0047
HOT RODS
$38.95A leaking countershaft seal will compromise your transmission's integrity and lead to costly damage if left unaddressed. This complete repair kit eliminates the guesswork by bundling everything you...09350559- SKU:
- 09350559
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
- PRODUCT NAME:
- SEAL
- APPLICATION:
- COUNTERSHAFT
- APPLICATION:
- TRANSMISSION
- RIDING STYLE:
- ATV
- UNITS:
- KIT
$38.95 -
HOT RODS Crankshaft Bearings HR00009
HOT RODS
$190.95Crankshaft bearing wear is one of the most critical failure points in any engine, directly compromising reliability and longevity. The HOT RODS HR00009 kit delivers OEM-quality main bearings and...09240597- SKU:
- 09240597
- Availability:
- Ships Same Business Day
- Weight:
- 1.90 LBS
- PRODUCT NAME:
- BEARING
- UNITS:
- KIT
- APPLICATION:
- CRANKSHAFT
- RIDING STYLE:
- UTV
- RIDING STYLE:
- ATV
- TYPE:
- ENGINE
$190.95Qty in Cart: 0Quantity:Price:$190.95Subtotal: -
HOT RODS Crankshaft Bearings K101
HOT RODS
$180.95Crankshaft bearings are critical wear items that directly impact engine reliability and longevity. The HOT RODS K101 kit delivers OEM-equivalent performance at a fraction of the cost, making it an...09240600- SKU:
- 09240600
- Availability:
- Ships Same Business Day
- Weight:
- 0.35 LBS
- PRODUCT NAME:
- BEARING
- UNITS:
- KIT
- APPLICATION:
- CRANKSHAFT
- RIDING STYLE:
- UTV
- TYPE:
- ENGINE
$180.95 -
HOT RODS Crankshaft Bearings K241
HOT RODS
$144.95Worn or failing crankshaft bearings compromise engine reliability and can lead to catastrophic damage if left unaddressed. The HOT RODS K241 bearing and seal kit delivers OEM-equivalent performance...09240601- SKU:
- 09240601
- Availability:
- Ships Same Business Day
- Weight:
- 0.50 LBS
- RIDING STYLE:
- ATV
- UNITS:
- KIT
- PRODUCT NAME:
- BEARING
- APPLICATION:
- CRANKSHAFT
- TYPE:
- ENGINE
$144.95 -
HOT RODS Crankshaft Bearings K242
HOT RODS
$146.95Crankshaft bearing wear is one of the most common failure points in high-mileage and high-stress engines, and compromised bearings directly translate to lost power, increased friction, and...09240602- SKU:
- 09240602
- Availability:
- Ships Same Business Day
- Weight:
- 0.45 LBS
- PRODUCT NAME:
- BEARING
- UNITS:
- KIT
- RIDING STYLE:
- ATV
- TYPE:
- ENGINE
- APPLICATION:
- CRANKSHAFT
$146.95 -
HOT RODS Crankshaft Bearings K086
HOT RODS
$98.95Worn or failing crankshaft bearings compromise engine reliability and performance—costly downtime you can't afford. The HOT RODS K086 bearing and seal kit delivers OEM-equivalent quality at a...09240482- SKU:
- 09240482
- Availability:
- Ships Same Business Day
- Weight:
- 1.80 LBS
- PRODUCT NAME:
- BEARING
- UNITS:
- KIT
- RIDING STYLE:
- ATV
- TYPE:
- ENGINE
- APPLICATION:
- CRANKSHAFT
$98.95 -
HOT RODS Crankshaft Bearings K088
HOT RODS
$180.95Crankshaft bearings are critical to engine reliability—worn or damaged bearings lead to catastrophic engine failure, increased friction, and loss of horsepower. The HOT RODS K088 kit delivers...09240483- SKU:
- 09240483
- Availability:
- Ships Same Business Day
- Weight:
- 0.35 LBS
- UNITS:
- KIT
- APPLICATION:
- CRANKSHAFT
- RIDING STYLE:
- UTV
- PRODUCT NAME:
- BEARING
- TYPE:
- ENGINE
$180.95 -
HOT RODS Connecting Rod 8620
HOT RODS
$225.95When you're pushing your engine to the limit, factory connecting rods become your weakest link. The HOT RODS 8620 Connecting Rod delivers OE-replacement durability with measurable upgrades in...09230045- SKU:
- 09230045
- Availability:
- Ships Same Business Day
- Weight:
- 1.65 LBS
- MATERIAL:
- 8620 STEEL
- PRODUCT NAME:
- CONNECTING ROD KIT
- UNITS:
- KIT
- RIDING STYLE:
- ATV
- ENGINE TYPE:
- 4-CYCLE
- STYLE:
- HEAVY DUTY
$225.95Qty in Cart: 0Quantity:Price:$225.95Subtotal: -
HOT RODS Connecting Rod 8630
HOT RODS
$225.95When you're pushing your engine to the limit, weak connecting rods become your biggest liability. The HOT RODS 8630 Connecting Rod is engineered specifically for high-rpm durability and load...09230053- SKU:
- 09230053
- Availability:
- Ships Same Business Day
- Weight:
- 1.69 LBS
- RIDING STYLE:
- ATV
- MATERIAL:
- 8620 STEEL
- PRODUCT NAME:
- CONNECTING ROD KIT
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- ENGINE TYPE:
- 4-CYCLE
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- STYLE:
- HEAVY DUTY
$225.95 -
HOT RODS Connecting Rod 8641
HOT RODS
$212.95When you're pushing your engine to the limit, your connecting rods are handling forces that demand uncompromising durability. The HOT RODS 8641 delivers heavy-duty reliability with certified 8620...09230062- SKU:
- 09230062
- Availability:
- Ships Same Business Day
- Weight:
- 1.78 LBS
- MATERIAL:
- 8620 STEEL
- STYLE:
- HEAVY DUTY
- ENGINE TYPE:
- 4-CYCLE
- FEATURES:
- INCLUDES THRUST WASHERS
- PRODUCT NAME:
- CONNECTING ROD KIT
- RIDING STYLE:
- ATV
- UNITS:
- KIT
$212.95 -
HOT RODS Connecting Rod 8715
HOT RODS
$331.95Whether you're building a stroker engine or refreshing a high-mileage block, connecting rods are the critical link between your crankshaft and piston—and they take enormous loads at extreme RPMs. The...09230517- SKU:
- 09230517
- Availability:
- Ships Same Business Day
- Weight:
- 2.00 LBS
- PRODUCT NAME:
- CONNECTING ROD KIT
- RIDING STYLE:
- ATV
- UNITS:
- KIT
- ENGINE TYPE:
- 4-CYCLE
- MATERIAL:
- 8620 STEEL
- RIDING STYLE:
- UTV
$331.95 -
HOT RODS Connecting Rod 8720
HOT RODS
$219.95When you're pushing your engine to the limit, your connecting rods need to handle extreme loads and sustained high-RPM operation without compromise. The HOT RODS 8720 is engineered specifically for...09230518- SKU:
- 09230518
- Availability:
- Ships Same Business Day
- Weight:
- 1.25 LBS
- RIDING STYLE:
- ATV
- MATERIAL:
- 8620 STEEL
- PRODUCT NAME:
- CONNECTING ROD KIT
- UNITS:
- KIT
$219.95Qty in Cart: 0Quantity:Price:$219.95Subtotal: -
HOT RODS Connecting Rod 8719
HOT RODS
$348.55If you're building or rebuilding an engine that sees serious RPM, connecting rod failure isn't an option—it's catastrophic. The HOT RODS 8719 is engineered to handle extreme loads and sustained...09230519- SKU:
- 09230519
- Availability:
- Ships Same Business Day
- Weight:
- 2.00 LBS
- MATERIAL:
- 8620 STEEL
- PRODUCT NAME:
- CONNECTING ROD KIT
- RIDING STYLE:
- UTV
- UNITS:
- KIT
- RIDING STYLE:
- ATV
- ENGINE TYPE:
- 4-CYCLE
$348.55
