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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MOOSE RACING Motor Seals - Can-Am 822362
MOOSE RACING
$51.16Engine and transmission seals are critical wear items that directly impact reliability and oil containment. OEM replacement seals can drain your budget quickly, but MOOSE Racing delivers genuine-quality seals at a fraction of dealer pricing. This...09350545- SKU:
- 09350545
- Availability:
- Ships Same Business Day
- Weight:
- 0.17 LBS
- PRODUCT NAME:
- SEAL
- TYPE:
- OIL
- APPLICATION:
- ENGINE
- UNITS:
- SET
- RIDING STYLE:
- ATV
$51.16Qty in Cart: 0Quantity:Price:$51.16Subtotal: -
MOOSE RACING Motor Seals - KVF 750 822366
MOOSE RACING
$27.08Engine seal degradation is inevitable—but catastrophic failure doesn't have to be. The MOOSE RACING Motor Seals for KVF 750 give you factory-spec sealing integrity at a fraction of OEM pricing, using high-tech materials engineered for durability and...09350851- SKU:
- 09350851
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- PRODUCT NAME:
- SEAL
- RIDING STYLE:
- ATV
- APPLICATION:
- ENGINE
- TYPE:
- OIL
- UNITS:
- SET
$27.08 -
MOOSE RACING Water Pump Seal - Polaris 503006
MOOSE RACING
$49.26Water pump seal failure is one of the most common causes of coolant leaks in high-performance Polaris engines—and a single breach can lead to overheating and catastrophic engine damage. The MOOSE Racing 503006 mechanical water pump seal gives you a...09350858- SKU:
- 09350858
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- RIDING STYLE:
- UTV
- PRODUCT NAME:
- SEAL KIT
- APPLICATION:
- WATER PUMP
- UNITS:
- KIT
$49.26 -
MOOSE RACING Water Pump Seal - Polaris 503007
MOOSE RACING
$47.85Water pump seal failure is one of the most common causes of catastrophic engine damage in high-performance Polaris applications. This MOOSE Racing OEM-quality mechanical seal replaces worn or damaged units without requiring a complete gasket kit...09350859- SKU:
- 09350859
- Availability:
- Ships Same Business Day
- Weight:
- 0.77 LBS
- RIDING STYLE:
- ATV
- APPLICATION:
- WATER PUMP
- PRODUCT NAME:
- SEAL KIT
- UNITS:
- KIT
$47.85 -
MOOSE RACING Motor Seals - KFX/LT 80 822231
MOOSE RACING
$18.77Engine seal failures lead to costly leaks, performance loss, and catastrophic damage—often at the worst possible time. The MOOSE RACING Motor Seals kit eliminates guesswork by providing a complete OEM-equivalent seal set engineered for precision fitment...09350378- SKU:
- 09350378
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
- PRODUCT NAME:
- SEAL
- RIDING STYLE:
- ATV
- APPLICATION:
- ENGINE
- TYPE:
- OIL
- UNITS:
- SET
$18.77 -
MOOSE RACING Motor Seals - KLF 300 822242
MOOSE RACING
$19.60Engine seal degradation leads to oil leaks, compression loss, and potential catastrophic failure—problems that compound the longer you wait. MOOSE RACING Motor Seals deliver OEM-equivalent fitment and durability at a fraction of dealer prices, allowing...09350380- SKU:
- 09350380
- Availability:
- Ships Same Business Day
- Weight:
- 0.11 LBS
- PRODUCT NAME:
- SEAL
- RIDING STYLE:
- ATV
- APPLICATION:
- ENGINE
- TYPE:
- OIL
- UNITS:
- SET
$19.60 -
MOOSE RACING Complete Motor Gasket Kit - LT-F 300 808832
MOOSE RACING
$80.32A complete engine and transmission rebuild demands precision gasket sealing—any compromise risks catastrophic leakage and performance loss. The MOOSE RACING Complete Motor Gasket Kit eliminates the guesswork by providing every gasket, seal, and o-ring...M808832- SKU:
- M808832
- Availability:
- Ships Same Business Day
- Weight:
- 0.24 LBS
- RIDING STYLE:
- ATV
- TYPE:
- COMPLETE
- PRODUCT NAME:
- GASKET
- UNITS:
- KIT
- TYPE:
- ENGINE
$80.32 -
MOOSE RACING Complete Motor Gasket Kit - 600 Grizzly 808833
MOOSE RACING
$134.43A complete engine and transmission rebuild demands precision gaskets that won't fail under load—and OEM replacements can drain your budget fast. The MOOSE RACING Complete Motor Gasket Kit delivers genuine-quality sealing surfaces at a fraction of OEM...M808833- SKU:
- M808833
- Availability:
- Ships Same Business Day
- Weight:
- 0.45 LBS
- RIDING STYLE:
- ATV
- TYPE:
- COMPLETE
- PRODUCT NAME:
- GASKET
- UNITS:
- KIT
- TYPE:
- ENGINE
$134.43 -
MOOSE RACING Complete Motor Gasket Kit - LT-R 500 808835
MOOSE RACING
$73.01A complete engine and transmission rebuild demands precision-matched gaskets and seals that won't fail under load. The MOOSE RACING Complete Motor Gasket Kit eliminates the guesswork and expense of sourcing individual components by bundling everything...M808835- SKU:
- M808835
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
- RIDING STYLE:
- ATV
- TYPE:
- COMPLETE
- TYPE:
- ENGINE
- PRODUCT NAME:
- GASKET
- UNITS:
- KIT
$73.01 -
MOOSE RACING Complete Motor Gasket Kit - DVX/LTZ/KFX 808847
MOOSE RACING
$126.73A complete engine and transmission rebuild demands gasket integrity—any leak or seal failure compromises performance and reliability. The MOOSE RACING Complete Motor Gasket Kit eliminates guesswork by delivering every gasket, o-ring, and valve seal you...M808847- SKU:
- M808847
- Availability:
- Ships Same Business Day
- Weight:
- 0.26 LBS
- TYPE:
- COMPLETE
- PRODUCT NAME:
- GASKET
- RIDING STYLE:
- ATV
- UNITS:
- KIT
- TYPE:
- ENGINE
$126.73 -
MOOSE RACING Top End Gasket Kit - Polaris 810962
MOOSE RACING
$92.02A top-end rebuild demands precision and reliability—cutting corners on gaskets and seals invites oil leaks, compression loss, and catastrophic engine failure. The MOOSE RACING Top End Gasket Kit gives you OEM-equivalent sealing performance at a fraction...09346011- SKU:
- 09346011
- Availability:
- Ships Same Business Day
- Weight:
- 0.30 LBS
- RIDING STYLE:
- UTV
- RIDING STYLE:
- ATV
- UNITS:
- KIT
- PRODUCT NAME:
- GASKET
- TYPE:
- TOP END
$92.02 -
MOOSE RACING Exhaust Gasket Kit - Can-Am 823007
MOOSE RACING
$13.83A failing exhaust gasket can compromise your engine's seal integrity, leading to exhaust leaks, power loss, and potential engine damage. The MOOSE RACING Exhaust Gasket Kit delivers OEM-quality sealing with factory-spec materials, ensuring reliable...09346027- SKU:
- 09346027
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- PRODUCT NAME:
- GASKET KIT
- RIDING STYLE:
- ATV
- TYPE:
- EXHAUST
- UNITS:
- KIT
$13.83 -
MOOSE RACING Exhaust Gasket Kit 823009
MOOSE RACING
$12.28A quality exhaust gasket kit is critical for maintaining a proper seal between exhaust manifold and header components—preventing exhaust leaks that compromise performance and increase emissions. MOOSE RACING's 823009 kit delivers OEM-equivalent gaskets...09346028- SKU:
- 09346028
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- PRODUCT NAME:
- GASKET KIT
- UNITS:
- KIT
- RIDING STYLE:
- STREET
- TYPE:
- EXHAUST
$12.28 -
MOOSE RACING Exhaust Gasket Kit - Honda 823061
MOOSE RACING
$6.76A quality exhaust gasket kit is essential for maintaining a proper seal between your header and cylinder head, preventing exhaust leaks that rob horsepower and create unwanted noise. MOOSE RACING's Honda-specific gasket kit ensures consistent compression...09346030- SKU:
- 09346030
- Availability:
- Ships Same Business Day
- Weight:
- 0.11 LBS
- UNITS:
- KIT
- TYPE:
- EXHAUST
- PRODUCT NAME:
- GASKET KIT
- RIDING STYLE:
- ATV
$6.76 -
MOOSE RACING Exhaust Gasket Kit - Polaris 823090
MOOSE RACING
$11.08A properly sealed exhaust system is critical to maintaining peak engine performance and preventing costly gas leaks that compromise horsepower and fuel efficiency. This OEM-quality gasket kit provides the precision seals you need to eliminate exhaust...09346031- SKU:
- 09346031
- Availability:
- Ships Same Business Day
- Weight:
- 0.11 LBS
- RIDING STYLE:
- ATV
- UNITS:
- KIT
- PRODUCT NAME:
- GASKET KIT
- TYPE:
- EXHAUST
$11.08 -
Cylinder Works Standard Bore High Compression Cylinder Kit for Polaris General 1000 60006-K01HC
CYLINDER WORKS
$1,353.95When your Polaris General 1000 is ready to deliver more power, a high-compression cylinder upgrade is one of the most direct paths to increased horsepower and torque. The Cylinder Works Standard Bore High Compression Cylinder eliminates guesswork with a...09310732- SKU:
- 09310732
- Availability:
- Ships Same Business Day
- Weight:
- 10.00 LBS
- BORE SIZE METRIC:
- 93.00 MM
- UNITS:
- EACH
- CYLINDER DIAMETER METRIC:
- 93.00 MM
- ENGINE TYPE:
- 4-CYCLE
- STYLE:
- HIGH COMPRESSION
- RIDING STYLE:
- UTV
- CYLINDER DIAMETER:
- 93,00 MM
- PRODUCT NAME:
- CYLINDER
$1,353.95Qty in Cart: 0Quantity:Price:$1,353.95Subtotal: -
Cylinder Works Big Bore Cylinder Kit for Polaris RZR 900 2015-2016 975cc 10.5:1 Compression 61004-K01
CYLINDER WORKS
$1,283.95If you're serious about extracting maximum horsepower from your Polaris RZR 900, a big bore cylinder kit is one of the most direct paths to measurable gains in power and throttle response. The Cylinder Works 975cc kit delivers a displacement increase...09310736- SKU:
- 09310736
- Availability:
- Ships Same Business Day
- Weight:
- 9.50 LBS
- CYLINDER DIAMETER METRIC:
- 93.00 MM
- UNITS:
- KIT
- COMPRESSION RATIO IMPERIAL:
- 10.5:1
- RIDING STYLE:
- UTV
- CYLINDER DIAMETER:
- 93,00 MM
- DISPLACEMENT:
- 1110 CC
- ENGINE TYPE:
- 4-CYCLE
- PRODUCT NAME:
- CYLINDER KIT
- STYLE:
- BIG BORE
- CYLINDER BORE COATING:
- NICKEL-SILICON CARBIDE
- OVERBORE METRIC:
- +5.00 MM
$1,283.95Qty in Cart: 0Quantity:Price:$1,283.95Subtotal: -
MOOSE RACING Top End Gasket Kit - Polaris 250 810806
MOOSE RACING
$25.81When you're rebuilding a Polaris 250 top end, OEM gasket kits come with premium pricing. The MOOSE RACING Top End Gasket Kit gives you genuine replacement seals and precision-engineered gaskets at a fraction of the cost—without compromising reliability...M810806- SKU:
- M810806
- Availability:
- Ships Same Business Day
- Weight:
- 0.13 LBS
- TYPE:
- TOP END
- UNITS:
- KIT
- PRODUCT NAME:
- GASKET
- RIDING STYLE:
- ATV
$25.81 -
MOOSE RACING Top End Gasket - Polaris 300 810807
MOOSE RACING
$26.26A top-end gasket set is critical for engine reliability—without proper sealing, you're risking oil leaks, compression loss, and premature wear that can sideline your machine. The MOOSE RACING Top End Gasket for Polaris 300 delivers OEM-equivalent sealing...M810807- SKU:
- M810807
- Availability:
- Ships Same Business Day
- Weight:
- 0.13 LBS
- UNITS:
- KIT
- PRODUCT NAME:
- GASKET
- RIDING STYLE:
- ATV
- TYPE:
- TOP END
$26.26 -
MOOSE RACING Top End Gasket - Polaris 400 810808
MOOSE RACING
$35.82Engine rebuilds demand precision and reliability—compromises here mean costly failures and downtime. The MOOSE RACING Top End Gasket set delivers OEM-quality sealing at a fraction of the cost, with every gasket, O-ring, and seal needed for a complete...M810808- SKU:
- M810808
- Availability:
- Ships Same Business Day
- Weight:
- 0.13 LBS
- RIDING STYLE:
- ATV
- UNITS:
- KIT
- TYPE:
- TOP END
- PRODUCT NAME:
- GASKET
$35.82
