ATV/UTV Piston and Ring Kits
ATV/UTV Piston & Ring Kits at JJ Motorsports
Rebuild your ATV/UTV engine with premium forged piston and ring kits from JJ Motorsports, featuring high-compression and big-bore options for massive power gains on Yamaha YFZ450, Honda TRX450R, Suzuki LTZ400, and more. These race-proven kits deliver superior durability and performance in off-road, trail, and dune conditions.
Shop Millennium, JE Pistons, and Wossner piston kits for championship-level quality. Explore related categories such as ATV/UTV engine for cylinders and gaskets, or ATV/UTV for cams and exhaust to complete your top-end rebuild and dominate the track or trail.
Top ATV/UTV Piston & Ring Kits
- Millennium Piston Kit K8897D500-2 – +5.00mm big-bore piston kit; forged for Yamaha YFZ450/R with rings, pin, and clips.
- JE Pistons Piston Kit 261546 – High-compression forged piston; includes rings and wrist pin for Honda TRX450R.
- Wossner Piston Kit 8094D050 – +0.50mm oversize piston kit; lightweight forged with moly coating for Suzuki LTZ400.
Browse our in-stock inventory below with same-day shipping and expert support. Free shipping on orders over $99! Questions? Contact us for fitment advice!
- Product
- Qty in Cart
- Quantity
- Price
- Subtotal
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Wiseco Piston Kit 99mm 12.5:1 for 2004-2005 Honda TRX450R 4889M09900
WISECO
$309.95If you're running a TRX450R at the track or trail, your stock piston limits how much power your engine can safely produce. The Wiseco 99mm piston kit with 12.5:1 compression ratio unlocks measurable horsepower gains while maintaining the reliability your...09102839- SKU:
- 09102839
- Availability:
- Ships Same Business Day
- Weight:
- 1.25 LBS
- BORE - OVERSIZE METRIC:
- +4.00 MM
- DISPLACEMENT:
- 489 CC
- BORE - OVERSIZE:
- +4,00 MM
- BORE SIZE METRIC:
- 99.00 MM
- ENGINE TYPE:
- 4-STROKE
- PISTON MATERIAL:
- ALUMINUM ALLOY
- PISTON MATERIAL:
- FORGED
- PRODUCT NAME:
- PISTON
- UNITS:
- EACH
- COMPRESSION RATIO IMPERIAL:
- 12.5:1
- RIDING STYLE:
- ATV
- STROKE LENGTH METRIC:
- 64.80 MM
$309.95Qty in Cart: 0Quantity:Price:$309.95Subtotal: -
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 sourcing compatible parts individually, letting you focus...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 durability needed for consistent high-RPM performance...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 needed to maximize efficiency while maintaining...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 durability and precision fitment, giving you the confidence...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 delivers the precision engineering and material quality...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
$128.12 -
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 delivers the strength and precision fit needed to safely...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 pressures without compromise, giving you the reliability to...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 high-mileage wear or stepping up displacement, this kit...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
$232.95Qty in Cart: 0Quantity:Price:$232.95Subtotal: -
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 maintains consistent ring seal across the RPM band,...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 compression and responsiveness, while the lightweight...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
$205.95Qty in Cart: 0Quantity:Price:$205.95Subtotal: -
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 demanding riding conditions. Whether you're rebuilding...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
$274.95 -
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 and material quality needed to restore compression,...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 maintaining reliability in demanding off-road conditions. This...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 compression ratio and optimized piston geometry improve...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 precision-engineered pistons that maintain tight tolerances,...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 restores your quad's performance with a high-silicon alloy...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 performance with a high-silicon alloy construction that handles...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 handle aggressive riding while maintaining the reliability...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 with high-silicon alloy construction to withstand...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
$202.95Qty in Cart: 0Quantity:Price:$202.95Subtotal:
