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
ATHENA Complete Gasket Kit - Polaris P400427850009
ATHENA
MSRP: $34.95Now: $31.00Was: $34.95Superior-quality gasket sets from Athena, Head gaskets feature rubber-coated spring steel construction, Soft steel base gaskets are rubber coated, Steel core materials feature high springback and...09344889- SKU:
- 09344889
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
- PRODUCT NAME:
- GASKET KIT
- RIDING STYLE:
- ATV
- TYPE:
- COMPLETE
- ENGINE TYPE:
- -
- UNITS:
- KIT
MSRP: $34.95Now: $31.00Was: $34.95Qty in Cart: 0Quantity:Price:MSRP: $34.95Now: $31.00Was: $34.95Subtotal: -
On Sale
ATHENA Complete Gasket Kit - Polaris P400427850007
ATHENA
MSRP: $109.95Now: $99.00Was: $109.95Superior-quality gasket sets from Athena, Head gaskets feature rubber-coated spring steel construction, Soft steel base gaskets are rubber coated, Steel core materials feature high springback and...09344892- SKU:
- 09344892
- Availability:
- Ships Same Business Day
- Weight:
- 0.30 LBS
- PRODUCT NAME:
- GASKET KIT
- RIDING STYLE:
- ATV
- TYPE:
- COMPLETE
- ENGINE TYPE:
- -
- UNITS:
- KIT
MSRP: $109.95Now: $99.00Was: $109.95Qty in Cart: 0Quantity:Price:MSRP: $109.95Now: $99.00Was: $109.95Subtotal: -
On Sale
ATHENA Top End Gasket Kit - Polaris P400427620017
ATHENA
MSRP: $115.95Now: $104.00Was: $115.95Specifically designed for the pro, semi-pro and amateur rider who freshens up their engine prior to a race or during midseason. Gives the rider a choice of using standard gas with stock compression,...09344897- SKU:
- 09344897
- Availability:
- Ships Same Business Day
- Weight:
- 0.35 LBS
- MATERIAL:
- SILICONE
- UNITS:
- KIT
- PRODUCT NAME:
- GASKET KIT
- RIDING STYLE:
- ATV
- TYPE:
- TOP END
MSRP: $115.95Now: $104.00Was: $115.95Qty in Cart: 0Quantity:Price:MSRP: $115.95Now: $104.00Was: $115.95Subtotal: -
On Sale
ATHENA Complete Gasket Kit - Polaris P400427870021
ATHENA
MSRP: $200.95Now: $181.00Was: $200.95Superior-quality gasket sets from Athena, Head gaskets feature rubber-coated spring steel construction, Soft steel base gaskets are rubber coated, Steel core materials feature high springback and...09343193- SKU:
- 09343193
- Availability:
- Ships Same Business Day
- Weight:
- 0.55 LBS
- UNITS:
- KIT
- ENGINE TYPE:
- 4-STROKE
- PRODUCT NAME:
- GASKET KIT
- RIDING STYLE:
- UTV
- TYPE:
- COMPLETE
MSRP: $200.95Now: $181.00Was: $200.95Qty in Cart: 0Quantity:Price:MSRP: $200.95Now: $181.00Was: $200.95Subtotal: -
On Sale
ATHENA Gasket Kit - Big Bore - KXF/KFX P400250160003
ATHENA
MSRP: $113.95Now: $103.00Was: $113.95Kits include aluminum cylinder with nickel-carbide coating designed with larger water jackets, Forged piston with molybdenum coating, Special gasket kit, Easy-to-follow step-by-step installation...09341536- SKU:
- 09341536
- Availability:
- Ships Same Business Day
- Weight:
- 0.16 LBS
- BORE SIZE:
- 100,00 MM
- PRODUCT NAME:
- GASKET KIT
- RIDING STYLE:
- ATV
- BORE SIZE METRIC:
- 100.00 MM
- TYPE:
- TOP END
- UNITS:
- KIT
MSRP: $113.95Now: $103.00Was: $113.95 -
On Sale
ATHENA Gasket Kit - LTR450 - 100 mm P400510160008
ATHENA
MSRP: $90.95Now: $82.00Was: $90.95Kits include aluminum cylinder with nickel-carbide coating designed with larger water jackets, Forged piston with molybdenum coating, Special gasket kit, Easy-to-follow step-by-step installation...09341540- SKU:
- 09341540
- Availability:
- Ships Same Business Day
- Weight:
- 0.18 LBS
- BORE SIZE:
- 100,00 MM
- PRODUCT NAME:
- GASKET KIT
- TYPE:
- TOP END
- UNITS:
- KIT
- BORE SIZE METRIC:
- 100.00 MM
- RIDING STYLE:
- ATV
MSRP: $90.95Now: $82.00Was: $90.95Qty in Cart: 0Quantity:Price:MSRP: $90.95Now: $82.00Was: $90.95Subtotal: -
On Sale
ATHENA Complete Gasket Kit - Honda P400210850305
ATHENA
MSRP: $129.95Now: $117.00Was: $129.95Engine rebuilds demand precision—gaskets that won't fail under sustained heat and pressure. The ATHENA Complete Gasket Kit delivers the material science and engineering needed for a reliable top-end...09344872- SKU:
- 09344872
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
- PRODUCT NAME:
- GASKET KIT
- RIDING STYLE:
- ATV
- ENGINE TYPE:
- -
- TYPE:
- COMPLETE
- UNITS:
- KIT
MSRP: $129.95Now: $117.00Was: $129.95Qty in Cart: 0Quantity:Price:MSRP: $129.95Now: $117.00Was: $129.95Subtotal: -
On Sale
ATHENA Top End Gasket Kit - Honda P400210600199
ATHENA
MSRP: $146.95Now: $132.00Was: $146.95Whether you're prepping for race day or executing a midseason engine refresh, the ATHENA Top End Gasket Kit ensures your Honda engine maintains peak compression integrity and reliability under...09344873- SKU:
- 09344873
- Availability:
- Ships Same Business Day
- Weight:
- 0.45 LBS
- RIDING STYLE:
- ATV
- TYPE:
- TOP END
- MATERIAL:
- SILICONE
- UNITS:
- KIT
- PRODUCT NAME:
- GASKET KIT
MSRP: $146.95Now: $132.00Was: $146.95Qty in Cart: 0Quantity:Price:MSRP: $146.95Now: $132.00Was: $146.95Subtotal: -
HOT RODS Counter Balancer Kit BBK0025
HOT RODS
$77.95A properly functioning counter balancer is critical to engine longevity and smooth operation—worn or failed bearings lead to excessive vibration, internal damage, and premature engine failure. The...09500871- SKU:
- 09500871
- Availability:
- Ships Same Business Day
- Weight:
- 0.70 LBS
- PRODUCT NAME:
- BEARING
- TYPE:
- COUNTERBALANCE SHAFT
- UNITS:
- KIT
- RIDING STYLE:
- ATV
$77.95Qty in Cart: 0Quantity:Price:$77.95Subtotal: -
HOT RODS Water Pump Repair Kit - Yamaha WPK0025
HOT RODS
$105.95A leaking water pump compromises engine cooling efficiency and can lead to catastrophic overheating if left unaddressed. The HOT RODS Water Pump Repair Kit (WPK0025) gives you precision-engineered...09342936- SKU:
- 09342936
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- PRODUCT NAME:
- GASKET KIT
- TYPE:
- WATER PUMP REPAIR
- UNITS:
- KIT
- RIDING STYLE:
- ATV
$105.95Qty in Cart: 0Quantity:Price:$105.95Subtotal: -
HOT RODS Oil Pump Roller Chain Kit HC00041
HOT RODS
$26.95A failing oil pump chain directly threatens engine longevity and reliability—premature wear accelerates timing degradation and can lead to catastrophic lubrication failure. The HOT RODS Oil Pump...09320252- SKU:
- 09320252
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
- UNITS:
- KIT
- TYPE:
- OIL PUMP
- PRODUCT NAME:
- CHAIN
- RIDING STYLE:
- UTV
$26.95 -
HOT RODS Connecting Rod 8632
HOT RODS
$225.95If you're pushing your engine to high RPM territory, stock connecting rods are a liability waiting to happen. The HOT RODS 8632 is engineered to handle sustained high-revving abuse with purpose-built...09230286- SKU:
- 09230286
- Availability:
- Ships Same Business Day
- Weight:
- 2.07 LBS
- MATERIAL:
- 8620 STEEL
- PRODUCT NAME:
- CONNECTING ROD KIT
- ENGINE TYPE:
- 4-CYCLE
- RIDING STYLE:
- ATV
- FEATURES:
- INCLUDES THRUST WASHERS
- UNITS:
- KIT
$225.95Qty in Cart: 0Quantity:Price:$225.95Subtotal: -
HOT RODS Counter Balancer Bearing Kit - Yamaha BBK0015
HOT RODS
$77.95A counter balancer bearing failure can compromise engine stability and accelerate wear across your entire drivetrain. The HOT RODS Counter Balancer Bearing Kit delivers OEM-equivalent precision...09500546- SKU:
- 09500546
- Availability:
- Ships Same Business Day
- Weight:
- 0.30 LBS
- PRODUCT NAME:
- BEARING KIT
- RIDING STYLE:
- ATV
- TYPE:
- COUNTERBALANCE SHAFT
- UNITS:
- KIT
$77.95 -
HOT RODS Water Pump Repair Kit - Yamaha WPK0062
HOT RODS
$78.95A failing water pump can sideline your machine and compromise engine cooling when you can't afford downtime. This HOT RODS repair kit gives you precision OEM-quality components to restore pump...09344047- SKU:
- 09344047
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- TYPE:
- WATER PUMP REPAIR
- UNITS:
- KIT
- PRODUCT NAME:
- GASKET KIT
- RIDING STYLE:
- ATV
$78.95Qty in Cart: 0Quantity:Price:$78.95Subtotal: -
HOT RODS Connecting Rod 8660
HOT RODS
$232.95If you're building or rebuilding a high-RPM engine, your connecting rods are critical to reliability and longevity. The HOT RODS 8660 delivers the strength and precision engineering you need to...09230205- SKU:
- 09230205
- Availability:
- Ships Same Business Day
- Weight:
- 1.83 LBS
- ENGINE TYPE:
- 4-CYCLE
- MATERIAL:
- 8620 STEEL
- STYLE:
- HEAVY DUTY
- UNITS:
- KIT
- FEATURES:
- INCLUDES THRUST WASHERS
- PRODUCT NAME:
- CONNECTING ROD KIT
- RIDING STYLE:
- ATV
- RIDING STYLE:
- OFF-ROAD
$232.95 -
HOT RODS Crank Bearings K054
HOT RODS
$103.95A crankshaft is only as reliable as its bearings. The HOT RODS K054 crank bearing and seal kit ensures proper load distribution, reduces friction, and maintains critical clearances—essential for both...09240164- SKU:
- 09240164
- Availability:
- Ships Same Business Day
- Weight:
- 2.86 LBS
- PRODUCT NAME:
- BEARING
- RIDING STYLE:
- ATV
- TYPE:
- BALL
- APPLICATION:
- MAIN CRANKSHAFT
- UNITS:
- SET
- RIDING STYLE:
- UTV
$103.95 -
HOT RODS Plain Bearing Crankshaft CRBPLKIT-4Y
HOT RODS
$50.95A quality crankshaft rebuild starts with precision-engineered bearings and seals that match OEM specifications. Hot Rods main bearing and seal kits eliminate guesswork by providing matched components...09240408- SKU:
- 09240408
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- UNITS:
- SET
- APPLICATION:
- CRANKSHAFT
- RIDING STYLE:
- UTV
- PRODUCT NAME:
- BEARING
- TYPE:
- PLAIN
$50.95 -
HOT RODS Crank Bearings K081
HOT RODS
$55.95A crankshaft assembly is only as reliable as the bearings that support it. The HOT RODS K081 Crank Bearings are precision-engineered main bearing and seal kits designed to work seamlessly with HOT...09240371- SKU:
- 09240371
- Availability:
- Ships Same Business Day
- Weight:
- 0.75 LBS
- TYPE:
- BALL
- PRODUCT NAME:
- BEARING
- RIDING STYLE:
- UTV
- RIDING STYLE:
- ATV
- APPLICATION:
- MAIN CRANKSHAFT
- UNITS:
- KIT
$55.95 -
HOT RODS Crankshaft Kit 4418
HOT RODS
$488.95If you're building a long-stroke engine for your ATV, reliability starts with a quality crankshaft assembly. The HOT RODS Crankshaft Kit 4418 arrives factory-assembled and trued to OEM...09210578- SKU:
- 09210578
- Availability:
- Ships Same Business Day
- Weight:
- 13.25 LBS
- MATERIAL:
- 4140 STEEL
- STROKE LENGTH METRIC:
- 71.50 MM
- COLOR/FINISH:
- STEEL
- FEATURES:
- STANDARD CRANKSHAFT
- TYPE:
- OEM STROKE
- MODEL:
- 4-CYCLE
- RIDING STYLE:
- ATV
- UNITS:
- ASSEMBLY
- DISPLACEMENT:
- 420 CC
- PRODUCT NAME:
- CRANKSHAFT ASSEMBLY
$488.95 -
HOT RODS Crankshaft Kit 4089
HOT RODS
$908.95A long-stroke crankshaft kit unlocks measurable gains in low-end torque and overall engine responsiveness—critical for ATV racing where power delivery consistency determines race outcomes. The HOT...09210498- SKU:
- 09210498
- Availability:
- Ships Same Business Day
- Weight:
- 15.25 LBS
- PRODUCT NAME:
- CRANKSHAFT ASSEMBLY
- RIDING STYLE:
- ATV
- MATERIAL:
- 4140 STEEL
- MODEL:
- 4-CYCLE
- STROKE LENGTH METRIC:
- 66.00 MM
- UNITS:
- ASSEMBLY
- COLOR/FINISH:
- STEEL
- DISPLACEMENT:
- 700 CC TO 750 CC
- FEATURES:
- STANDARD CRANKSHAFT
- RIDING STYLE:
- UTV
- TYPE:
- OEM STROKE
$908.95
