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
-
Wiseco 94mm Piston Kit for 2004-2005 Honda TRX450R PK1066
WISECO
$354.95A top-end rebuild demands precision components that work in perfect harmony—and the Wiseco 94mm Piston Kit delivers exactly that. This complete forged piston assembly eliminates the guesswork of...09030477- SKU:
- 09030477
- Availability:
- Ships Same Business Day
- Weight:
- 1.65 LBS
- BORE - OVERSIZE:
- STANDARD
- BORE - OVERSIZE METRIC:
- STANDARD
- PRODUCT NAME:
- REBUILD KIT
- SKIRT COATING:
- ARMORGLIDE®
- BORE SIZE METRIC:
- 94.00 MM
- DISPLACEMENT:
- 450 CC
- PISTON MATERIAL:
- 2618 ALUMINUM ALLOY
- STROKE LENGTH METRIC:
- 64.80 MM
- UNITS:
- KIT
- ENGINE TYPE:
- 4-STROKE
- PISTON DIAMETER METRIC:
- 93.92 MM
- RIDING STYLE:
- ATV
- TYPE:
- TOP END
- COMPRESSION RATIO IMPERIAL:
- 10.5:1
- MODEL:
- FORGED SERIES
$354.95Qty in Cart: 0Quantity:Price:$354.95Subtotal: -
Wiseco Piston Kit Honda TRX300EX 1993-2008 2.00mm Oversize 11:1 Compression 4574M07600
WISECO
$209.95If you're pushing your TRX300EX to its limits, stock pistons won't cut it. The Wiseco 2.00mm oversize piston kit delivers measurable gains in compression ratio and power output while maintaining the...09100378- SKU:
- 09100378
- Availability:
- Ships Same Business Day
- Weight:
- 0.81 LBS
- BORE SIZE METRIC:
- 76.00 MM
- PISTON MATERIAL:
- FORGED
- STROKE LENGTH METRIC:
- 65.50 MM
- BORE - OVERSIZE:
- +2,00 MM
- PRODUCT NAME:
- PISTON
- BORE - OVERSIZE METRIC:
- +2.00 MM
- DISPLACEMENT:
- 297 CC
- ENGINE TYPE:
- 4-STROKE
- PISTON MATERIAL:
- ALUMINUM ALLOY
- RIDING STYLE:
- ATV
- UNITS:
- EACH
$209.95Qty in Cart: 0Quantity:Price:$209.95Subtotal: -
Wiseco Piston Kit 52.00mm Oversize for Kawasaki KFX80 2003-2006 673M05200
WISECO
$134.95If you're running a Kawasaki KFX80 and want to safely increase displacement and power output, a quality oversize piston kit is essential. The Wiseco 52.00mm piston delivers the precision engineering...09100380- SKU:
- 09100380
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- BORE - OVERSIZE METRIC:
- +2.00 MM
- DISPLACEMENT:
- 82 CC
- ENGINE TYPE:
- 2-STROKE
- BORE SIZE METRIC:
- 52.00 MM
- PISTON MATERIAL:
- ALUMINUM ALLOY
- RIDING STYLE:
- ATV
- STROKE LENGTH METRIC:
- 42.00 MM
- UNITS:
- EACH
- BORE - OVERSIZE:
- +2,00 MM
- PISTON MATERIAL:
- FORGED
- PRODUCT NAME:
- PISTON
$134.95 -
Wiseco Piston Kit 52.50mm Oversize for Polaris Sportsman 90 2001-2005 839M05250
WISECO
$119.95When you're boring out your Polaris Sportsman 90, you need pistons engineered to handle the increased displacement without sacrificing reliability. The Wiseco 839M05250 delivers forged-aluminum...09100382- SKU:
- 09100382
- Availability:
- Ships Same Business Day
- Weight:
- 0.50 LBS
- BORE - OVERSIZE:
- +0,50 MM
- BORE - OVERSIZE METRIC:
- +0.50 MM
- BORE SIZE METRIC:
- 52.50 MM
- ENGINE TYPE:
- 2-STROKE
- PISTON MATERIAL:
- ALUMINUM ALLOY
- RIDING STYLE:
- ATV
- UNITS:
- EACH
- DISPLACEMENT:
- STOCK
- PISTON MATERIAL:
- FORGED
- PRODUCT NAME:
- PISTON
- STROKE LENGTH METRIC:
- 41.90 MM
$119.95 -
Wiseco Piston Kit 53.50 mm for Polaris Sportsman 90 2001-2005 839M05350
WISECO
$128.12If you're running a Polaris Sportsman 90 and want measurable gains in horsepower and torque, a quality piston upgrade is one of the most direct paths to reliable performance. The Wiseco 839M05350...09100384- SKU:
- 09100384
- Availability:
- Ships Same Business Day
- Weight:
- 0.40 LBS
- BORE - OVERSIZE:
- +1,50 MM
- PISTON MATERIAL:
- ALUMINUM ALLOY
- RIDING STYLE:
- ATV
- UNITS:
- EACH
- BORE - OVERSIZE METRIC:
- +1.50 MM
- DISPLACEMENT:
- STOCK
- PISTON MATERIAL:
- FORGED
- PRODUCT NAME:
- PISTON
- ENGINE TYPE:
- 2-STROKE
- STROKE LENGTH METRIC:
- 41.90 MM
- BORE SIZE METRIC:
- 53.50 MM
$128.12Qty in Cart: 0Quantity:Price:$128.12Subtotal: -
Wiseco Piston Kit 79mm 8.8:1 Compression for Honda TRX350 Rancher 2000-2006 4933M07900
WISECO
$189.95Stock pistons in your TRX350 Rancher are a limiting factor for reliability and power output, especially if you're pushing higher RPMs or running demanding conditions. The Wiseco 79mm piston kit...09100855- SKU:
- 09100855
- Availability:
- Ships Same Business Day
- Weight:
- 0.90 LBS
- BORE SIZE METRIC:
- 79.00 MM
- STROKE LENGTH METRIC:
- 68.00 MM
- BORE - OVERSIZE:
- +0,50 MM
- PISTON MATERIAL:
- FORGED
- PRODUCT NAME:
- PISTON
- BORE - OVERSIZE METRIC:
- +0.50 MM
- SKIRT COATING:
- MOLY COATED
- DISPLACEMENT:
- 333 CC
- ENGINE TYPE:
- 4-STROKE
- PISTON MATERIAL:
- ALUMINUM ALLOY
- RIDING STYLE:
- ATV
- UNITS:
- EACH
$189.95 -
Wiseco Yamaha YFM80 Badger 1985-2001 48mm Piston Kit PK1680
WISECO
$209.95If you're rebuilding the top-end on your YFM80 Badger, you need a piston kit engineered for the demands of 2-cycle performance. Wiseco's forged design handles extreme temperatures and combustion...09030662- SKU:
- 09030662
- Availability:
- Ships Same Business Day
- Weight:
- 0.80 LBS
- BORE - OVERSIZE METRIC:
- +1.00 MM
- SKIRT COATING:
- NON-COATED
- STROKE LENGTH METRIC:
- 45.60 MM
- UNITS:
- KIT
- DISPLACEMENT:
- 83 CC
- ENGINE TYPE:
- 4-STROKE
- MODEL:
- FORGED SERIES
- RIDING STYLE:
- ATV
- TYPE:
- TOP END
- BORE - OVERSIZE:
- +1,00 MM
- COMPRESSION RATIO IMPERIAL:
- 11.0:1
- PISTON DIAMETER METRIC:
- 47.97 MM
- PISTON MATERIAL:
- 4032 ALUMINUM ALLOY
- BORE SIZE METRIC:
- 48.00 MM
- PRODUCT NAME:
- REBUILD KIT
$209.95Qty in Cart: 0Quantity:Price:$209.95Subtotal: -
Wiseco Piston Kit Honda TRX250R 1987-1989 562M06750
WISECO
$232.95The Wiseco Piston Kit is engineered to restore or upgrade your Honda TRX250R engine with precision-fit internals that handle both stock and modified power levels. Whether you're rebuilding after...09101215- SKU:
- 09101215
- Availability:
- Ships Same Business Day
- Weight:
- 0.75 LBS
- BORE - OVERSIZE METRIC:
- +1.50 MM
- DISPLACEMENT:
- 246 CC
- PISTON MATERIAL:
- ALUMINUM
- PRODUCT NAME:
- PISTON
- STROKE LENGTH METRIC:
- 72.00 MM
- BORE - OVERSIZE:
- +1,50 MM
- BORE SIZE METRIC:
- 67.50 MM
- ENGINE TYPE:
- 2-STROKE
- RIDING STYLE:
- ATV
- UNITS:
- EACH
$232.95 -
Wiseco Suzuki LT-R450 2006-2011 Piston Kit 95.50mm 11.7:1 PK1423
WISECO
$349.95The Wiseco LT-R450 piston kit delivers the reliability and precision your Suzuki demands when you're pushing hard on the track or trail. High-silicone forged construction resists thermal stress and...09030488- SKU:
- 09030488
- Availability:
- Ships Same Business Day
- Weight:
- 1.50 LBS
- DISPLACEMENT:
- 450 CC
- MODEL:
- FORGED SERIES
- PISTON DIAMETER METRIC:
- 95.50 MM
- BORE SIZE METRIC:
- 95.50 MM
- TYPE:
- TOP END
- BORE - OVERSIZE METRIC:
- STANDARD
- SKIRT COATING:
- ARMORGLIDE®
- UNITS:
- KIT
- BORE - OVERSIZE:
- STANDARD
- COMPRESSION RATIO IMPERIAL:
- 11.7:1
- ENGINE TYPE:
- 4-STROKE
- PISTON MATERIAL:
- 2618 ALUMINUM ALLOY
- PRODUCT NAME:
- REBUILD KIT
- RIDING STYLE:
- ATV
- STROKE LENGTH METRIC:
- 62.80 MM
$349.95Qty in Cart: 0Quantity:Price:$349.95Subtotal: -
Wiseco Piston Kit Standard Bore 68.50mm Honda TRX250EX 2001-2008 4935M06850
WISECO
$205.95Stock pistons wear out—especially in high-performance or frequently-ridden TRX250EX builds. The Wiseco Piston Kit Standard Bore delivers OEM-quality fitment with precision engineering that restores...09100856- SKU:
- 09100856
- Availability:
- Ships Same Business Day
- Weight:
- 0.65 LBS
- PISTON MATERIAL:
- FORGED
- BORE SIZE METRIC:
- 68.50 MM
- SKIRT COATING:
- MOLY COATED
- STROKE LENGTH METRIC:
- 62.20 MM
- BORE - OVERSIZE:
- STANDARD
- BORE - OVERSIZE METRIC:
- STANDARD
- DISPLACEMENT:
- 229 CC
- PRODUCT NAME:
- PISTON
- ENGINE TYPE:
- 4-STROKE
- PISTON MATERIAL:
- ALUMINUM ALLOY
- RIDING STYLE:
- ATV
- UNITS:
- EACH
$205.95 -
Wiseco Piston Kit 97.00mm 13:1 Compression for 2008-2014 Can-Am DS 450 40027M09700
WISECO
$274.95The Wiseco Piston Kit 97.00mm 13:1 Compression is purpose-built for the 2008-2014 Can-Am DS 450, delivering the high compression ratio and precision tolerances required for sustained performance in...09102809- SKU:
- 09102809
- Availability:
- Ships Same Business Day
- Weight:
- 1.10 LBS
- BORE - OVERSIZE:
- STANDARD
- BORE - OVERSIZE METRIC:
- STANDARD
- ENGINE TYPE:
- 4-STROKE
- RIDING STYLE:
- ATV
- BORE SIZE METRIC:
- 97.00 MM
- COMPRESSION RATIO IMPERIAL:
- 13.0:1
- PISTON MATERIAL:
- ALUMINUM
- PRODUCT NAME:
- PISTON
- SKIRT COATING:
- ARMORGLIDE®
- STROKE LENGTH METRIC:
- 60.80 MM
- UNITS:
- EACH
- DISPLACEMENT:
- 449 CC
$274.95Qty in Cart: 0Quantity:Price:$274.95Subtotal: -
Wiseco Piston Kit 82.50mm for 2007-2013 Can-Am Outlander 500 40028M08250
WISECO
$189.95Stock pistons in your Can-Am Outlander 500 limit your engine's potential—excessive wear, power loss, and reliability issues follow. The Wiseco 82.50mm piston kit delivers the precision engineering...09102811- SKU:
- 09102811
- Availability:
- Ships Same Business Day
- Weight:
- 1.10 LBS
- BORE SIZE METRIC:
- 82.50 MM
- COMPRESSION RATIO IMPERIAL:
- STOCK
- DISPLACEMENT:
- 496 CC
- ENGINE TYPE:
- 4-STROKE
- PRODUCT NAME:
- PISTON
- RIDING STYLE:
- ATV
- SKIRT COATING:
- ARMORGLIDE®
- UNITS:
- EACH
- BORE - OVERSIZE:
- +0,50 MM
- BORE - OVERSIZE METRIC:
- +0.50 MM
- PISTON MATERIAL:
- ALUMINUM
- STROKE LENGTH METRIC:
- 47.00 MM
$189.95Qty in Cart: 0Quantity:Price:$189.95Subtotal: -
Wiseco Piston Kit Standard Bore 93mm 12.5:1 Compression Polaris RZR XP 900 2011-2014 40046M09300
WISECO
$249.95If you're pushing your RZR XP 900 to its limits, a stock piston won't cut it. The Wiseco Piston Kit delivers the compression ratio and durability you need to extract maximum horsepower while...09102819- SKU:
- 09102819
- Availability:
- Ships Same Business Day
- Weight:
- 1.15 LBS
- DISPLACEMENT:
- 876 CC
- BORE - OVERSIZE:
- STANDARD
- BORE - OVERSIZE METRIC:
- STANDARD
- ENGINE TYPE:
- 4-STROKE
- PRODUCT NAME:
- PISTON
- SKIRT COATING:
- ARMORGLIDE®
- UNITS:
- EACH
- RIDING STYLE:
- UTV
- BORE SIZE METRIC:
- 93.00 MM
- PISTON MATERIAL:
- ALUMINUM ALLOY
- PISTON MATERIAL:
- FORGED
- STROKE LENGTH METRIC:
- 64.50 MM
$249.95 -
Wiseco Piston Kit 68mm 10.25:1 Compression for Suzuki LT230S 1985-1988 4382M06800
WISECO
$194.95If you're running an LT230S and want to unlock reliable power gains without compromising durability, this Wiseco piston kit delivers the precision engineering your engine demands. The 10.25:1...09102828- SKU:
- 09102828
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- BORE - OVERSIZE METRIC:
- +2.00 MM
- STROKE LENGTH METRIC:
- 67.00 MM
- BORE SIZE METRIC:
- 68.00 MM
- BORE - OVERSIZE:
- +2,00 MM
- DISPLACEMENT:
- 229 CC
- ENGINE TYPE:
- 4-STROKE
- PISTON MATERIAL:
- ALUMINUM ALLOY
- PISTON MATERIAL:
- FORGED
- PRODUCT NAME:
- PISTON
- RIDING STYLE:
- ATV
- UNITS:
- EACH
$194.95Qty in Cart: 0Quantity:Price:$194.95Subtotal: -
Wiseco Piston Kit Honda TRX250X 1987-1992 76mm 12:1 4440M07600
WISECO
$209.95If you're running a TRX250X, piston wear directly impacts compression, throttle response, and overall engine reliability. The Wiseco 4440M07600 kit restores your engine's efficiency with...09102829- SKU:
- 09102829
- Availability:
- Ships Same Business Day
- Weight:
- 1.00 LBS
- BORE SIZE METRIC:
- 76.00 MM
- COMPRESSION RATIO IMPERIAL:
- 12.0:1
- PISTON MATERIAL:
- ALUMINUM ALLOY
- PISTON MATERIAL:
- FORGED
- STROKE LENGTH METRIC:
- 57.30 MM
- BORE - OVERSIZE:
- +2,00 MM
- BORE - OVERSIZE METRIC:
- +2.00 MM
- DISPLACEMENT:
- 246 CC
- ENGINE TYPE:
- 4-STROKE
- PRODUCT NAME:
- PISTON
- RIDING STYLE:
- ATV
- UNITS:
- EACH
$209.95 -
Wiseco Piston Kit 74mm 10.25:1 Compression for Honda TRX300 FourTrax 1988-2000 4629M07400
WISECO
$194.95If you're running a TRX300 FourTrax that's seen hard use—whether on the trail or the track—a worn piston compromises compression, throttle response, and overall reliability. The Wiseco 4629M07400...4629M07400- SKU:
- 4629M07400
- Availability:
- Ships Same Business Day
- Weight:
- 0.62 LBS
- COMPRESSION RATIO IMPERIAL:
- 10.25:1
- PISTON DIAMETER METRIC:
- 73.95 MM
- STROKE LENGTH METRIC:
- 65.50 MM
- UNITS:
- KIT
- BORE - OVERSIZE:
- STANDARD
- BORE - OVERSIZE METRIC:
- STANDARD
- BORE SIZE METRIC:
- 74.00 MM
- DISPLACEMENT:
- 282 CC
- MODEL:
- FORGED SERIES
- PRODUCT NAME:
- PISTON KIT
- SKIRT COATING:
- NON-COATED
- ENGINE TYPE:
- 4-STROKE
- PISTON MATERIAL:
- FORGED 2618 ALUMINUM
- RIDING STYLE:
- ATV
$194.95Qty in Cart: 0Quantity:Price:$194.95Subtotal: -
Wiseco Honda TRX300 FourTrax 1988-2000 74.50mm Piston Kit 4629M07450
WISECO
$194.95When your TRX300's original piston starts showing wear, you're losing compression, efficiency, and the responsive power that makes trail riding enjoyable. The Wiseco 4629M07450 restores that...4629M07450- SKU:
- 4629M07450
- Availability:
- Ships Same Business Day
- Weight:
- 0.50 LBS
- BORE - OVERSIZE:
- +0,50 MM
- PISTON DIAMETER METRIC:
- 74.45 MM
- STROKE LENGTH METRIC:
- 65.50 MM
- UNITS:
- KIT
- COMPRESSION RATIO IMPERIAL:
- 10.25:1
- DISPLACEMENT:
- 282 CC
- ENGINE TYPE:
- 4-STROKE
- RIDING STYLE:
- ATV
- BORE SIZE METRIC:
- 74.50 MM
- MODEL:
- FORGED SERIES
- PRODUCT NAME:
- PISTON KIT
- SKIRT COATING:
- NON-COATED
- BORE - OVERSIZE METRIC:
- +0.50 MM
- PISTON MATERIAL:
- FORGED 2618 ALUMINUM
$194.95Qty in Cart: 0Quantity:Price:$194.95Subtotal: -
Wiseco Honda TRX300 1988-2000 Piston Kit 4629M07500
WISECO
$194.95When your Honda TRX300 is pushing harder on the trail or at the track, factory pistons become your limiting factor. The Wiseco 4629M07500 piston kit delivers the strength and precision needed to...4629M07500- SKU:
- 4629M07500
- Availability:
- Ships Same Business Day
- Weight:
- 0.80 LBS
- ENGINE TYPE:
- 4-STROKE
- PISTON MATERIAL:
- FORGED 2618 ALUMINUM
- RIDING STYLE:
- ATV
- DISPLACEMENT:
- 282 CC
- BORE - OVERSIZE METRIC:
- +1.00 MM
- BORE SIZE METRIC:
- 75.00 MM
- MODEL:
- FORGED SERIES
- PISTON DIAMETER METRIC:
- 74.95 MM
- PRODUCT NAME:
- PISTON KIT
- SKIRT COATING:
- NON-COATED
- BORE - OVERSIZE:
- +1,00 MM
- COMPRESSION RATIO IMPERIAL:
- 10.25:1
- STROKE LENGTH METRIC:
- 65.50 MM
- UNITS:
- KIT
$194.95 -
Wiseco Piston Honda CRF450R 2002-2008 96mm 12.01:1 449cc 2457-4820M09600
WISECO
$202.95A worn or damaged piston directly compromises combustion efficiency, power delivery, and engine longevity—especially in high-stress racing and trail applications. The Wiseco 4393M08150 is engineered...4393M08150- SKU:
- 4393M08150
- Availability:
- Ships Same Business Day
- Weight:
- 1.02 LBS
- BORE - OVERSIZE METRIC:
- +0.50 MM
- DISPLACEMENT:
- 350.4 CC
- ENGINE TYPE:
- 4-STROKE
- MODEL:
- FORGED SERIES
- RIDING STYLE:
- ATV
- STROKE LENGTH METRIC:
- 68.00 MM
- PISTON DIAMETER METRIC:
- 81.45 MM
- PISTON MATERIAL:
- FORGED 2618 ALUMINUM
- BORE - OVERSIZE:
- +0,50 MM
- BORE SIZE METRIC:
- 81.50 MM
- PRODUCT NAME:
- PISTON KIT
- SKIRT COATING:
- NON-COATED
- UNITS:
- KIT
- COMPRESSION RATIO IMPERIAL:
- 10.25:1
- RIDING STYLE:
- OFF-ROAD
$202.95 -
WORKS CONNECTION Engine Timing Plug - Red - Honda 24-565
WORKS CONNECTION
$49.95Engine timing access plugs might seem like a small detail, but they're essential for anyone regularly tuning, checking ignition timing, or performing valve adjustments on your Honda. Stock plastic...09500160- SKU:
- 09500160
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- COLOR/FINISH:
- RED
- RIDING STYLE:
- ATV
- TYPE:
- ENGINE
- UNITS:
- SET
- COLOR/FINISH:
- ANODIZED
- MATERIAL:
- 6061 T-6 ALUMINUM
- PRODUCT NAME:
- PLUG
$49.95
