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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Cylinder Works Big Bore Cylinder Kit YFM 700 Raptor 2006-2014 21004-K01
CYLINDER WORKS
$1,011.95If you're running a YFM 700 Raptor and want measurable power gains without extensive machine work, a big bore cylinder kit is one of the most direct paths to increased displacement and performance. The Cylinder Works kit delivers this upgrade as a...09310655- SKU:
- 09310655
- Availability:
- Ships Same Business Day
- Weight:
- 9.20 LBS
- CYLINDER BORE COATING:
- NICKEL-SILICON CARBIDE
- CYLINDER DIAMETER:
- 105,00 MM
- CYLINDER DIAMETER METRIC:
- 105.00 MM
- OVERBORE METRIC:
- +3.00 MM
- PRODUCT NAME:
- CYLINDER KIT
- STYLE:
- BIG BORE
- UNITS:
- KIT
- COMPRESSION RATIO IMPERIAL:
- 9.2:1
- RIDING STYLE:
- ATV
- DISPLACEMENT:
- 727 CC
- ENGINE TYPE:
- 4-CYCLE
$1,011.95Qty in Cart: 0Quantity:Price:$1,011.95Subtotal: -
Pro Filter Replacement Oil Filter 2001-2005 Bombardier Traxter 500 4x4 Auto XT PF-557
PRO FILTER
$12.99Regular oil filter maintenance is critical to engine longevity, and the PRO FILTER PF-557 delivers OEM-exceeding filtration for your Bombardier Traxter 500. This replacement filter captures fine contaminants while maintaining consistent flow rates,...07120615- SKU:
- 07120615
- Availability:
- Ships Same Business Day
- Weight:
- 0.85 LBS
- FILTER MEDIA MATERIAL:
- PAPER
- UNITS:
- EACH
- COLOR/FINISH:
- BLACK
- RIDING STYLE:
- STREET
- STYLE:
- PREMIUM
- BASE COLOR:
- BLACK
- PRODUCT NAME:
- OIL FILTER
$12.99 -
Pro Filter PF-559 Premium Oil Filter for 2003-2006 Bombardier Rally 200
PRO FILTER
$7.99Engine longevity depends on consistent, reliable filtration—and OEM filters don't always cut it for high-demand applications. The Pro Filter PF-559 delivers superior micron filtration and stable flow rates across synthetic and conventional oils, keeping...07120616- SKU:
- 07120616
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- PRODUCT NAME:
- OIL FILTER
- STYLE:
- TRANSMISSION (SPYDER)
- BASE FINISH:
- CHROME
- STYLE:
- PREMIUM
- COLOR/FINISH:
- CHROME
- FILTER MEDIA MATERIAL:
- PAPER
- RIDING STYLE:
- STREET
- UNITS:
- EACH
$7.99 -
Pro Filter Replacement Oil Filter for 2008-2015 Can-Am DS 450 PF-560
PRO FILTER
$6.99Keep your DS 450's engine running clean and protected with the PRO FILTER PF-560, a purpose-built replacement that exceeds OEM specifications and handles both synthetic and conventional oils. Engine longevity depends on consistent filtration—this...07120617- SKU:
- 07120617
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- BASE FINISH:
- CHROME
- UNITS:
- EACH
- COLOR/FINISH:
- CHROME
- FILTER MEDIA MATERIAL:
- PAPER
- PRODUCT NAME:
- OIL FILTER
- RIDING STYLE:
- STREET
- STYLE:
- PREMIUM
$6.99 -
MOOSE UTILITY Impeller Water Pump MSE - Polaris 16-1200
MOOSE UTILITY
$32.95Stock plastic water pumps fail when it matters most—under sustained heat and load. The MOOSE UTILITY Impeller Water Pump replaces that liability with a cast aluminum construction that delivers superior cooling flow and proven longevity. If you're serious...09320234- SKU:
- 09320234
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- PRODUCT NAME:
- IMPELLER
- RIDING STYLE:
- ATV
- TYPE:
- WATER PUMP
- UNITS:
- EACH
$32.95 -
MOOSE UTILITY Clutch Cover Gasket Seal 100-4542-PU
MOOSE UTILITY
$19.95A degraded clutch cover gasket seal compromises engine integrity and invites oil seepage that can contaminate your clutch system and degrade performance. This MOOSE UTILITY replacement seal restores a reliable barrier between your clutch cover and engine...09351192- SKU:
- 09351192
- Availability:
- Ships Same Business Day
- Weight:
- 0.21 LBS
- RIDING STYLE:
- UTV
- APPLICATION:
- CLUTCH COVER
- PRODUCT NAME:
- SEAL
- UNITS:
- EACH
$19.95 -
MOOSE RACING Exhaust Gasket Kit - KVF/KRF 750 823004
MOOSE RACING
$12.28A compromised exhaust gasket compromises your entire engine seal integrity, leading to exhaust leaks, performance loss, and potential engine damage. MOOSE RACING's purpose-engineered gasket kit delivers OEM-quality sealing for Kawasaki KVF/KRF 750...09345492- SKU:
- 09345492
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- UNITS:
- KIT
- PRODUCT NAME:
- GASKET KIT
- RIDING STYLE:
- ATV
- TYPE:
- EXHAUST
$12.28 -
MOOSE RACING Exhaust Gasket Kit - Kawasaki 823005
MOOSE RACING
$9.53Exhaust gasket degradation is one of the most common sources of performance loss and air leaks in high-revving engines—and it's often overlooked until you notice power drop-off or exhaust manifold heat creep. The MOOSE RACING Exhaust Gasket Kit for...09345493- SKU:
- 09345493
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- RIDING STYLE:
- ATV
- UNITS:
- KIT
- TYPE:
- EXHAUST
- PRODUCT NAME:
- GASKET KIT
$9.53 -
MOOSE RACING Exhaust Gasket Kit - Banshee 350 823172
MOOSE RACING
$27.35A compromised exhaust gasket seal leads to performance loss, increased emissions, and potential engine damage—issues that compound over time. This MOOSE RACING Exhaust Gasket Kit restores a perfect seal between your Banshee 350's exhaust manifold and...09345500- SKU:
- 09345500
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
- TYPE:
- EXHAUST
- UNITS:
- KIT
- PRODUCT NAME:
- GASKET KIT
- RIDING STYLE:
- ATV
$27.35 -
MOOSE RACING Exhaust Gasket Kit - Raptor 660R/700R 823175
MOOSE RACING
$13.64A quality exhaust gasket kit is essential for maintaining a proper seal between your exhaust manifold and cylinder head—preventing costly exhaust leaks that compromise performance and increase emissions. MOOSE RACING's gasket kit for the Raptor 660R/700R...09345501- SKU:
- 09345501
- Availability:
- Ships Same Business Day
- Weight:
- 0.50 LBS
- RIDING STYLE:
- ATV
- UNITS:
- KIT
- TYPE:
- EXHAUST
- PRODUCT NAME:
- GASKET KIT
$13.64 -
Wossner Piston Kit for Polaris Trail Blazer 250 1990-2005 8094D050
WOSSNER
$122.00If you're running a Polaris Trail Blazer 250, your piston takes a beating—especially if you're pushing the engine hard or dealing with high ambient temperatures. The Wossner 8094D050 kit replaces worn pistons with a German-engineered component that...09105510- SKU:
- 09105510
- Availability:
- Ships Same Business Day
- Weight:
- 0.81 LBS
- BORE - OVERSIZE:
- +0,50 MM
- ENGINE TYPE:
- 2-STROKE
- RIDING STYLE:
- ATV
- UNITS:
- KIT
- PISTON MATERIAL:
- ALUMINUM ALLOY
- PISTON MATERIAL:
- FORGED
- PISTON SIZE METRIC:
- 72.43 MM
- BORE - OVERSIZE METRIC:
- +0.50 MM
- DISPLACEMENT:
- 244 CC
- BORE SIZE METRIC:
- 72.50 MM
- MODEL:
- STANDARD SERIES
- PRODUCT NAME:
- PISTON KIT
- TYPE:
- DUAL RING
$122.00 -
MILLENNIUM Cylinder Kit K292
MILLENNIUM
$449.95If you're pushing your engine to the limit, a factory cylinder kit won't cut it. The MILLENNIUM K292 Big Bore Cylinder Kit delivers the structural integrity and thermal stability required for sustained high-RPM performance, eliminating the reliability...09310699- SKU:
- 09310699
- Availability:
- Ships Same Business Day
- Weight:
- 6.01 LBS
- COMPRESSION RATIO IMPERIAL:
- 10.2:1
- MATERIAL:
- PLATED
- STYLE:
- BIG BORE
- PRODUCT NAME:
- CYLINDER KIT
- UNITS:
- KIT
- MATERIAL:
- ALUMINUM
- RIDING STYLE:
- UTV
- BORE SIZE METRIC:
- 104.00 MM
- RIDING STYLE:
- ATV
$449.95 -
MILLENNIUM Cylinder Kit K290
MILLENNIUM
$1,495.00When you're pushing your engine to the limit, stock internals become your biggest liability. The MILLENNIUM Cylinder Kit K290 replaces weak points with forged-steel components engineered to handle sustained high-RPM abuse and boost pressures that would...09310701- SKU:
- 09310701
- Availability:
- Ships Same Business Day
- Weight:
- 10.00 LBS
- UNITS:
- KIT
- BORE SIZE METRIC:
- 98.00 MM
- PRODUCT NAME:
- CYLINDER KIT
- STYLE:
- BIG BORE
- COMPRESSION RATIO IMPERIAL:
- 11.0:1
- MATERIAL:
- 6061 BILLET ALUMINUM
- RIDING STYLE:
- UTV
$1,495.00 -
On Sale
MILLENNIUM Cylinder - +5mm - RZR 900 MT194
MILLENNIUM
MSRP: $999.95Now: $640.00Was: $999.95The MILLENNIUM Cylinder delivers measurable horsepower gains and extended engine life through advanced NSC plating and precision CNC machining. If you're running a RZR 900 and want maximum reliability without sacrificing performance, this +5mm bore...09310702- SKU:
- 09310702
- Availability:
- Ships Same Business Day
- Weight:
- 5.90 LBS
- COMPRESSION RATIO IMPERIAL:
- 11.0:1
- MATERIAL:
- 6061 T6 ALUMINUM
- UNITS:
- KIT
- RIDING STYLE:
- UTV
- PRODUCT NAME:
- CYLINDER KIT
- STYLE:
- BIG BORE
- OVERBORE METRIC:
- +5.00 MM
MSRP: $999.95Now: $640.00Was: $999.95 -
MILLENNIUM Cylinder Kit K289
MILLENNIUM
$1,495.00If you're serious about extracting maximum power and reliability from your engine, a proper big bore kit isn't optional—it's essential. The MILLENNIUM Cylinder Kit K289 delivers the displacement gains you need without compromising structural integrity,...09310703- SKU:
- 09310703
- Availability:
- Ships Same Business Day
- Weight:
- 10.20 LBS
- UNITS:
- KIT
- COMPRESSION RATIO IMPERIAL:
- 12.0:1
- BORE SIZE METRIC:
- 98.00 MM
- PRODUCT NAME:
- CYLINDER KIT
- STYLE:
- BIG BORE
- MATERIAL:
- 6061 BILLET ALUMINUM
- RIDING STYLE:
- UTV
$1,495.00 -
MILLENNIUM Cylinder - +5mm - RZR 1000 MT195
MILLENNIUM
$999.95If you're running a RZR 1000 at the edge of performance, your stock cylinder is holding you back. The MILLENNIUM Cylinder delivers the displacement increase and wear resistance your engine needs to sustain higher boost pressures and extended racing...09310704- SKU:
- 09310704
- Availability:
- Ships Same Business Day
- Weight:
- 6.20 LBS
- UNITS:
- KIT
- MATERIAL:
- 6061 T6 ALUMINUM
- RIDING STYLE:
- UTV
- COMPRESSION RATIO IMPERIAL:
- 12.0:1
- OVERBORE METRIC:
- +5.00 MM
- PRODUCT NAME:
- CYLINDER KIT
- STYLE:
- BIG BORE
$999.95 -
MILLENNIUM Cylinder Kit K293
MILLENNIUM
$1,495.00When you're pushing your engine to the limit, a factory cylinder kit simply won't cut it. The MILLENNIUM K293 is a complete big bore solution engineered for racers and serious builders who demand maximum displacement, reliability, and power output in a...09310705- SKU:
- 09310705
- Availability:
- Ships Same Business Day
- Weight:
- 10.55 LBS
- MATERIAL:
- 6061 BILLET ALUMINUM
- RIDING STYLE:
- ATV
- PRODUCT NAME:
- CYLINDER KIT
- STYLE:
- BIG BORE
- UNITS:
- KIT
- BORE SIZE METRIC:
- 85.00 MM
- RIDING STYLE:
- UTV
- COMPRESSION RATIO IMPERIAL:
- 10.75:1
$1,495.00 -
MOOSE RACING Motor Seals - Polaris 822261
MOOSE RACING
$19.31Engine gaskets and seals deteriorate over time, leading to oil leaks, compression loss, and costly collateral damage. The MOOSE RACING Motor Seals kit delivers a complete OEM-equivalent solution at a fraction of the dealer price, giving you the...09350383- SKU:
- 09350383
- Availability:
- Ships Same Business Day
- Weight:
- 0.13 LBS
- RIDING STYLE:
- ATV
- TYPE:
- OIL
- APPLICATION:
- ENGINE
- PRODUCT NAME:
- SEAL
- UNITS:
- SET
$19.31 -
MOOSE RACING Motor Seals - TRX500 822277
MOOSE RACING
$41.00Engine and transmission seals are critical to maintaining oil pressure, preventing leaks, and protecting internal components from contamination. OEM seals can be prohibitively expensive, but MOOSE Racing delivers genuine replacement quality at a fraction...09350384- SKU:
- 09350384
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
- PRODUCT NAME:
- SEAL
- RIDING STYLE:
- ATV
- RIDING STYLE:
- OFF-ROAD
- APPLICATION:
- ENGINE
- TYPE:
- OIL
- UNITS:
- SET
$41.00Qty in Cart: 0Quantity:Price:$41.00Subtotal: -
MOOSE RACING Motor Seals - TRX450 822312
MOOSE RACING
$58.31Engine seal failures can compromise compression, cause oil leakage, and lead to catastrophic engine damage. MOOSE RACING Motor Seals deliver OEM-equivalent performance at a fraction of dealership pricing, giving you the confidence to rebuild your TRX450...09350385- SKU:
- 09350385
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
- PRODUCT NAME:
- SEAL
- RIDING STYLE:
- ATV
- APPLICATION:
- ENGINE
- TYPE:
- OIL
- UNITS:
- SET
$58.31
