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 Top End Gasket Kit - Polaris P400427600020
ATHENA
MSRP: $61.95Now: $53.00Was: $61.95Pre-race engine maintenance doesn't have to mean a complete teardown. The ATHENA Top End Gasket Kit lets you refresh your engine's critical sealing surfaces in minimal time—ideal whether you're...09344890- SKU:
- 09344890
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- PRODUCT NAME:
- GASKET KIT
- MATERIAL:
- SILICONE
- UNITS:
- KIT
- TYPE:
- TOP END
- RIDING STYLE:
- UTV
MSRP: $61.95Now: $53.00Was: $61.95Qty in Cart: 0Quantity:Price:MSRP: $61.95Now: $53.00Was: $61.95Subtotal: -
COMETIC Stator Gasket - Yamaha EC899032AFM
COMETIC
$10.95OEM stator cover gaskets fail prematurely due to adhesion to engine cases and material degradation under heat cycling—requiring time-consuming removal and replacement. The COMETIC Stator Gasket...09344502- SKU:
- 09344502
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- RIDING STYLE:
- ATV
- THICKNESS METRIC:
- 0.81 MM
- UNITS:
- EACH
- MATERIAL:
- AFM (ALUMINUM FOAM MATERIAL)
- MODEL:
- HI-PERFORMANCE
- PRODUCT NAME:
- GASKET
- THICKNESS:
- 0,81 MM (0,032')
- THICKNESS IMPERIAL:
- 0,032'
- TYPE:
- STATOR COVER
$10.95 -
COMETIC Clutch Gasket - Yamaha EC763032AFM
COMETIC
$17.95A quality clutch gasket is critical to preventing oil seepage and maintaining engine integrity during high-rpm operation. The COMETIC Clutch Gasket uses an aluminum-core AFM material that resists...09344492- SKU:
- 09344492
- Availability:
- Ships Same Business Day
- Weight:
- 0.06 LBS
- RIDING STYLE:
- ATV
- TYPE:
- CLUTCH COVER
- UNITS:
- EACH
- MODEL:
- HI-PERFORMANCE
- PRODUCT NAME:
- GASKET
- THICKNESS IMPERIAL:
- 0,032'
$17.95 -
COMETIC Clutch Gasket - Honda EC650032AFM
COMETIC
$43.95A quality clutch gasket is critical to maintaining a reliable seal and preventing oil weepage that can compromise engine performance and cleanliness. The COMETIC Clutch Gasket EC650032AFM uses...09344485- SKU:
- 09344485
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
- MODEL:
- HI-PERFORMANCE
- PRODUCT NAME:
- GASKET
- THICKNESS IMPERIAL:
- 0,032'
- UNITS:
- EACH
- RIDING STYLE:
- ATV
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- CLUTCH COVER
$43.95 -
COMETIC Bottom End Gasket Set - Honda C7349BE
COMETIC
$115.95A complete bottom end gasket kit is essential when rebuilding your engine—skipping it invites oil leaks, coolant seepage, and catastrophic failures down the line. COMETIC's engineered gasket set...09344293- SKU:
- 09344293
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
- MODEL:
- HI-PERFORMANCE
- UNITS:
- KIT
- RIDING STYLE:
- UTV
- PRODUCT NAME:
- GASKET KIT
- RIDING STYLE:
- ATV
- TYPE:
- BOTTOM END
$115.95 -
COMETIC Top End Gasket Set - Polaris C7312
COMETIC
$86.95A failing top-end gasket compromises combustion seal integrity and invites coolant leaks that sideline your engine. COMETIC's EST gasket kit eliminates guesswork with OEM-correct fitment and...09344279- SKU:
- 09344279
- Availability:
- Ships Same Business Day
- Weight:
- 0.21 LBS
- PRODUCT NAME:
- GASKET KIT
- RIDING STYLE:
- ATV
- TYPE:
- TOP END
- BORE SIZE METRIC:
- 95.00 MM
- UNITS:
- KIT
$86.95Qty in Cart: 0Quantity:Price:$86.95Subtotal: -
On Sale
ATHENA Complete Gasket Kit - Honda P400210850063
ATHENA
MSRP: $79.95Now: $72.00Was: $79.95A complete top-end rebuild demands gasket materials engineered to withstand extreme combustion pressures and thermal cycling without failure. The ATHENA Complete Gasket Kit eliminates the guesswork...09342566- SKU:
- 09342566
- Availability:
- Ships Same Business Day
- Weight:
- 0.21 LBS
- TYPE:
- COMPLETE
- UNITS:
- KIT
- ENGINE TYPE:
- -
- PRODUCT NAME:
- GASKET KIT
- RIDING STYLE:
- ATV
MSRP: $79.95Now: $72.00Was: $79.95Qty in Cart: 0Quantity:Price:MSRP: $79.95Now: $72.00Was: $79.95Subtotal: -
On Sale
ATHENA Top End Gasket Kit - Yamaha P400485600062
ATHENA
MSRP: $123.95Now: $106.00Was: $123.95A top-end gasket kit refresh is essential maintenance before race season or mid-season competition, ensuring your engine maintains proper compression and reliability under high-load conditions. The...09342564- SKU:
- 09342564
- Availability:
- Ships Same Business Day
- Weight:
- 0.26 LBS
- PRODUCT NAME:
- GASKET KIT
- RIDING STYLE:
- ATV
- TYPE:
- TOP END
- UNITS:
- KIT
MSRP: $123.95Now: $106.00Was: $123.95Qty in Cart: 0Quantity:Price:MSRP: $123.95Now: $106.00Was: $123.95Subtotal: -
On Sale
ATHENA Top End Gasket Kit - Honda P400210600063
ATHENA
MSRP: $71.95Now: $65.00Was: $71.95Whether you're prepping for race day or executing a midseason engine refresh, a quality top-end gasket kit is essential for maintaining compression integrity and preventing leakage. The ATHENA Top...09342562- SKU:
- 09342562
- Availability:
- Ships Same Business Day
- Weight:
- 0.18 LBS
- PRODUCT NAME:
- GASKET KIT
- RIDING STYLE:
- ATV
- MATERIAL:
- RUBBER
- UNITS:
- KIT
- TYPE:
- TOP END
MSRP: $71.95Now: $65.00Was: $71.95Qty in Cart: 0Quantity:Price:MSRP: $71.95Now: $65.00Was: $71.95Subtotal: -
MOOSE RACING Motor Gasket Kit with Seal - Kawasaki 811850
MOOSE RACING
$59.12A complete engine and transmission rebuild demands precision-fit gaskets and seals—compromising here risks oil leaks, compression loss, and catastrophic failure down the line. This MOOSE RACING kit...09342082- SKU:
- 09342082
- Availability:
- Ships Same Business Day
- Weight:
- 0.19 LBS
$59.12 -
On Sale
ATHENA Complete Gasket Kit - Suzuki P400510850401
ATHENA
MSRP: $233.95Now: $211.00Was: $233.95A complete gasket kit is essential when rebuilding any engine—even one small leak can compromise compression and force you back into the shop. The ATHENA Complete Gasket Kit delivers the precision...09341965- SKU:
- 09341965
- Availability:
- Ships Same Business Day
- Weight:
- 0.57 LBS
- PRODUCT NAME:
- GASKET KIT
- RIDING STYLE:
- ATV
- TYPE:
- COMPLETE
- ENGINE TYPE:
- -
- UNITS:
- KIT
MSRP: $233.95Now: $211.00Was: $233.95 -
On Sale
ATHENA Complete Gasket Kit - Kawasaki P400250850018
ATHENA
MSRP: $74.95Now: $67.00Was: $74.95A complete gasket kit is essential for any top-end or full engine rebuild, as failed gaskets lead to compression loss, oil leakage, and catastrophic engine damage. The ATHENA P400250850018 delivers...09341963- SKU:
- 09341963
- Availability:
- Ships Same Business Day
- Weight:
- 0.28 LBS
- PRODUCT NAME:
- GASKET KIT
- ENGINE TYPE:
- -
- TYPE:
- COMPLETE
- UNITS:
- KIT
- RIDING STYLE:
- ATV
MSRP: $74.95Now: $67.00Was: $74.95 -
On Sale
ATHENA Complete Gasket Kit - Kawasaki P400250850017
ATHENA
MSRP: $70.95Now: $64.00Was: $70.95Engine gasket integrity is critical for maintaining compression, preventing coolant and oil cross-contamination, and ensuring reliable performance under high heat and boost conditions. The ATHENA...09341962- SKU:
- 09341962
- Availability:
- Ships Same Business Day
- Weight:
- 0.31 LBS
- PRODUCT NAME:
- GASKET KIT
- RIDING STYLE:
- ATV
- ENGINE TYPE:
- -
- TYPE:
- COMPLETE
- UNITS:
- KIT
MSRP: $70.95Now: $64.00Was: $70.95Qty in Cart: 0Quantity:Price:MSRP: $70.95Now: $64.00Was: $70.95Subtotal: -
On Sale
ATHENA Top End Gasket Kit - Kawasaki P400250600018
ATHENA
MSRP: $49.95Now: $45.00Was: $49.95When you're prepping for race day, a fresh top end is non-negotiable—and the ATHENA Top End Gasket Kit ensures you're sealing every cylinder with precision-engineered components. This kit gives you...09341959- SKU:
- 09341959
- Availability:
- Ships Same Business Day
- Weight:
- 0.14 LBS
- TYPE:
- TOP END
- RIDING STYLE:
- ATV
- MATERIAL:
- RUBBER
- UNITS:
- KIT
- PRODUCT NAME:
- GASKET KIT
MSRP: $49.95Now: $45.00Was: $49.95Qty in Cart: 0Quantity:Price:MSRP: $49.95Now: $45.00Was: $49.95Subtotal: -
On Sale
ATHENA Top End Gasket Kit - Kawasaki P400250600017
ATHENA
MSRP: $40.95Now: $37.00Was: $40.95Engine gasket degradation is inevitable, but the timing of a rebuild doesn't have to derail your season. The ATHENA Top End Gasket Kit delivers OEM-quality sealing for mid-season freshening or...09341958- SKU:
- 09341958
- Availability:
- Ships Same Business Day
- Weight:
- 0.13 LBS
- TYPE:
- TOP END
- MATERIAL:
- RUBBER
- UNITS:
- KIT
- RIDING STYLE:
- ATV
- PRODUCT NAME:
- GASKET KIT
MSRP: $40.95Now: $37.00Was: $40.95Qty in Cart: 0Quantity:Price:MSRP: $40.95Now: $37.00Was: $40.95Subtotal: -
COMETIC Gasket Set - 94 mm - Kawasaki C7979-EST
COMETIC
$111.95High-output 4-stroke engines demand gasket sets engineered for extreme cylinder pressures and sustained heat cycles. COMETIC's EST technology delivers the sealing reliability and thermal management...09340938- SKU:
- 09340938
- Availability:
- Ships Same Business Day
- Weight:
- 0.23 LBS
- BORE SIZE METRIC:
- 94.00 MM
- TYPE:
- TOP END
- UNITS:
- KIT
- PRODUCT NAME:
- GASKET KIT
- RIDING STYLE:
- ATV
$111.95 -
COMETIC Gasket Set - 94 mm - Honda C7877-EST
COMETIC
$125.95High-output 4-stroke engines demand gasket materials engineered to withstand extreme cylinder pressures and heat cycles without compromise. The Cometic C7877-EST delivers the sealing integrity your...09340899- SKU:
- 09340899
- Availability:
- Ships Same Business Day
- Weight:
- 0.18 LBS
- TYPE:
- TOP END
- BORE SIZE METRIC:
- 94.00 MM
- PRODUCT NAME:
- GASKET KIT
- RIDING STYLE:
- ATV
- UNITS:
- KIT
$125.95 -
COMETIC Gasket Set - 89 mm - Honda C7826-EST
COMETIC
$139.95If you're running a high-output 4-stroke engine—whether naturally aspirated or forced induction—gasket failure is a real risk when cylinder pressures climb. The COMETIC C7826-EST addresses this...09340898- SKU:
- 09340898
- Availability:
- Ships Same Business Day
- Weight:
- 0.29 LBS
- UNITS:
- KIT
- TYPE:
- TOP END
- BORE SIZE METRIC:
- 89.00 MM
- PRODUCT NAME:
- GASKET KIT
- RIDING STYLE:
- ATV
$139.95 -
COMETIC Gasket Set - TRX350 C7402
COMETIC
$64.95A quality gasket set is foundational to engine reliability, especially when you're pushing higher horsepower or boost levels on your TRX350. The COMETIC C7402 uses multi-layered steel construction...09340273- SKU:
- 09340273
- Availability:
- Ships Same Business Day
- Weight:
- 0.18 LBS
- PRODUCT NAME:
- GASKET KIT
- RIDING STYLE:
- ATV
- THICKNESS METRIC:
- 0.31 MM
- TYPE:
- TOP END
- THICKNESS IMPERIAL:
- 0,012'
- BORE SIZE METRIC:
- 82.00 MM
- UNITS:
- KIT
$64.95Qty in Cart: 0Quantity:Price:$64.95Subtotal: -
HOT RODS Cylinder Kit - Front 30007-K01
HOT RODS
$690.95If you're rebuilding or refreshing your engine, worn cylinders rob you of compression, power delivery, and reliability. The HOT RODS Cylinder Kit delivers factory-quality bore geometry with Nickel...09310507- SKU:
- 09310507
- Availability:
- Ships Same Business Day
- Weight:
- 4.90 LBS
- COMPRESSION RATIO IMPERIAL:
- 8.8:1
- UNITS:
- KIT
- DISPLACEMENT:
- 749 CC
- RIDING STYLE:
- ATV
- BORE SIZE METRIC:
- 85.00 MM
- COLOR/FINISH:
- ALUMINUM
- PRODUCT NAME:
- CYLINDER KIT
- FEATURES:
- FRONT
- OVERBORE METRIC:
- STANDARD
- RIDING STYLE:
- UTV
- STYLE:
- STANDARD
$690.95
