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 for Suzuki LT80 1987-2006 PK1103
WISECO
$169.95If you're running a Suzuki LT80, a quality piston kit is essential for maintaining engine reliability and extracting consistent power from your 2-cycle engine. Wiseco's forged aluminum construction handles the thermal stress of high-RPM riding while...09030370- SKU:
- 09030370
- Availability:
- Ships Same Business Day
- Weight:
- 0.80 LBS
- BORE SIZE METRIC:
- 51.00 MM
- ENGINE TYPE:
- 2-STROKE
- TYPE:
- TOP END
- BORE - OVERSIZE METRIC:
- +1.00 MM
- PISTON DIAMETER METRIC:
- 50.92 MM
- RIDING STYLE:
- ATV
- SKIRT COATING:
- NON-COATED
- UNITS:
- KIT
- BORE - OVERSIZE:
- +1,00 MM
- DISPLACEMENT:
- 82 CC
- PISTON MATERIAL:
- 4032 ALUMINUM ALLOY
- MODEL:
- FORGED SERIES
- PRODUCT NAME:
- REBUILD KIT
- STROKE LENGTH METRIC:
- 42.00 MM
$169.95Qty in Cart: 0Quantity:Price:$169.95Subtotal: -
Wiseco Piston Kit for 1994-2003 Polaris Sportsman 400 4x4 PK1109
WISECO
$269.95A worn piston is one of the most common culprits behind power loss and reliability issues in your Polaris Sportsman 400. The Wiseco Piston Kit gives you everything needed for a complete top-end rebuild—with forged high-silicone construction that resists...09030372- SKU:
- 09030372
- Availability:
- Ships Same Business Day
- Weight:
- 1.90 LBS
- TYPE:
- TOP END
- UNITS:
- KIT
- BORE - OVERSIZE METRIC:
- +1.00 MM
- ENGINE TYPE:
- 2-STROKE
- MODEL:
- FORGED SERIES
- RIDING STYLE:
- ATV
- SKIRT COATING:
- NON-COATED
- STROKE LENGTH METRIC:
- 70.00 MM
- BORE - OVERSIZE:
- +1,00 MM
- DISPLACEMENT:
- 400 CC
- PISTON DIAMETER METRIC:
- 83.92 MM
- PISTON MATERIAL:
- 4032 ALUMINUM ALLOY
- BORE SIZE METRIC:
- 84.00 MM
- PRODUCT NAME:
- REBUILD KIT
$269.95 -
Wiseco 86mm 10:1 Piston Kit for Honda TRX400EX 1999-2008 PK1033
WISECO
$294.95When your TRX400EX's piston shows signs of wear or you're pushing for higher RPMs, a quality rebuild is non-negotiable. The Wiseco 86mm 10:1 Piston Kit delivers the durability and precision needed to handle sustained high-load conditions, whether you're...09030374- SKU:
- 09030374
- Availability:
- Ships Same Business Day
- Weight:
- 2.00 LBS
- BORE - OVERSIZE:
- +1,00 MM
- BORE - OVERSIZE METRIC:
- +1.00 MM
- RIDING STYLE:
- OFF-ROAD
- SKIRT COATING:
- NON-COATED
- UNITS:
- KIT
- MODEL:
- FORGED SERIES
- PRODUCT NAME:
- REBUILD KIT
- STROKE LENGTH METRIC:
- 70.00 MM
- TYPE:
- TOP END
- BORE SIZE METRIC:
- 86.00 MM
- COMPRESSION RATIO IMPERIAL:
- 10.0:1
- DISPLACEMENT:
- 397 CC
- PISTON DIAMETER METRIC:
- 85.95 MM
- ENGINE TYPE:
- 4-STROKE
- PISTON MATERIAL:
- 2618 ALUMINUM ALLOY
- RIDING STYLE:
- ATV
$294.95 -
Wiseco Piston Kit for 1990-2006 Polaris Trail Blazer 250 PK1086
WISECO
$218.95If you're running a 1990-2006 Polaris Trail Blazer 250 at the edge of its limits, a worn top-end will cost you power and reliability. The Wiseco Piston Kit PK1086 delivers a complete engine rebuild solution with precision-forged components designed to...09030375- SKU:
- 09030375
- Availability:
- Ships Same Business Day
- Weight:
- 0.95 LBS
- TYPE:
- TOP END
- UNITS:
- KIT
- BORE - OVERSIZE:
- +1,00 MM
- DISPLACEMENT:
- 244 CC
- PISTON MATERIAL:
- 4032 ALUMINUM ALLOY
- BORE - OVERSIZE METRIC:
- +1.00 MM
- BORE SIZE METRIC:
- 73.00 MM
- ENGINE TYPE:
- 2-STROKE
- MODEL:
- FORGED SERIES
- RIDING STYLE:
- ATV
- SKIRT COATING:
- NON-COATED
- PISTON DIAMETER METRIC:
- 72.92 MM
- PRODUCT NAME:
- REBUILD KIT
- STROKE LENGTH METRIC:
- 60.00 MM
$218.95 -
Wiseco Piston Kit 83.50mm for 1994-2003 Polaris Sportsman 400 PK1108
WISECO
$239.95When your Polaris Sportsman 400's original pistons show signs of wear or you're rebuilding after a failure, a quality forged piston kit is non-negotiable for reliable performance. Wiseco's high-silicone forged pistons deliver the strength and thermal...09030376- SKU:
- 09030376
- Availability:
- Ships Same Business Day
- Weight:
- 1.82 LBS
- BORE - OVERSIZE:
- +0,50 MM
- BORE - OVERSIZE METRIC:
- +0.50 MM
- BORE SIZE METRIC:
- 83.50 MM
- TYPE:
- TOP END
- UNITS:
- KIT
- ENGINE TYPE:
- 2-STROKE
- MODEL:
- FORGED SERIES
- SKIRT COATING:
- NON-COATED
- STROKE LENGTH METRIC:
- 70.00 MM
- PISTON DIAMETER METRIC:
- 83.42 MM
- PISTON MATERIAL:
- 4032 ALUMINUM ALLOY
- DISPLACEMENT:
- 400 CC
- PRODUCT NAME:
- REBUILD KIT
- RIDING STYLE:
- ATV
$239.95Qty in Cart: 0Quantity:Price:$239.95Subtotal: -
Wiseco Piston Kit for Polaris Trail Boss 250 1987-1993 PK1085
WISECO
$218.95Top-end wear is inevitable on high-mileage 2-cycle engines, but premature piston failure doesn't have to be. This Wiseco piston kit for your Polaris Trail Boss 250 delivers OEM-quality replacement parts engineered to withstand repeated combustion cycles...09030377- SKU:
- 09030377
- Availability:
- Ships Same Business Day
- Weight:
- 1.22 LBS
- BORE - OVERSIZE:
- +0,50 MM
- DISPLACEMENT:
- 244 CC
- SKIRT COATING:
- NON-COATED
- UNITS:
- KIT
- PISTON DIAMETER METRIC:
- 72.42 MM
- BORE - OVERSIZE METRIC:
- +0.50 MM
- BORE SIZE METRIC:
- 72.50 MM
- ENGINE TYPE:
- 2-STROKE
- MODEL:
- FORGED SERIES
- PRODUCT NAME:
- REBUILD KIT
- TYPE:
- TOP END
- PISTON MATERIAL:
- 4032 ALUMINUM ALLOY
- RIDING STYLE:
- ATV
- STROKE LENGTH METRIC:
- 60.00 MM
$218.95 -
Wiseco Piston Kit Yamaha YFS200 Blaster 1988-2006 PK1089
WISECO
$225.95If you're rebuilding a 2-stroke YFS200 Blaster engine, piston quality directly impacts your top-end reliability and power output. Wiseco's high-silicone forged pistons deliver the thermal stability and durability needed for sustained high-RPM operation,...09030378- SKU:
- 09030378
- Availability:
- Ships Same Business Day
- Weight:
- 1.15 LBS
- SKIRT COATING:
- NON-COATED
- UNITS:
- KIT
- BORE SIZE METRIC:
- 66.00 MM
- MODEL:
- PRO-LITE
- PRODUCT NAME:
- REBUILD KIT
- TYPE:
- TOP END
- PISTON DIAMETER METRIC:
- 65.95 MM
- STROKE LENGTH METRIC:
- 57.00 MM
- BORE - OVERSIZE:
- STANDARD
- BORE - OVERSIZE METRIC:
- STANDARD
- DISPLACEMENT:
- 195 CC
- ENGINE TYPE:
- 2-STROKE
- PISTON MATERIAL:
- 4032 ALUMINUM ALLOY
- RIDING STYLE:
- ATV
$225.95Qty in Cart: 0Quantity:Price:$225.95Subtotal: -
Wiseco Yamaha YFS200 Blaster 1988-2006 Piston Kit 67.50mm PK1095
WISECO
$219.95Stock pistons on your Yamaha Blaster won't survive sustained high-RPM riding or aggressive tuning—thermal stress and wear are inevitable. The Wiseco PK1095 eliminates these failure points with premium forged construction and minimal thermal expansion,...09030379- SKU:
- 09030379
- Availability:
- Ships Same Business Day
- Weight:
- 1.20 LBS
- BORE - OVERSIZE METRIC:
- +1.50 MM
- PISTON DIAMETER METRIC:
- 67.50 MM
- SKIRT COATING:
- NON-COATED
- BORE - OVERSIZE:
- +1,50 MM
- STROKE LENGTH METRIC:
- 57.00 MM
- UNITS:
- KIT
- MODEL:
- PRO-LITE
- PRODUCT NAME:
- REBUILD KIT
- TYPE:
- TOP END
- BORE SIZE METRIC:
- 67.50 MM
- DISPLACEMENT:
- 195 CC
- ENGINE TYPE:
- 2-STROKE
- PISTON MATERIAL:
- 4032 ALUMINUM ALLOY
- RIDING STYLE:
- ATV
$219.95 -
Wiseco Piston Kit Yamaha YFS200 Blaster 1988-2006 66.50mm PK1091
WISECO
$230.95A complete piston kit rebuild is essential for restoring your YFS200 Blaster's compression, sealing, and reliability after high-mileage use or racing abuse. Wiseco's forged high-silicone construction delivers the thermal stability and durability needed...09030381- SKU:
- 09030381
- Availability:
- Ships Same Business Day
- Weight:
- 1.15 LBS
- SKIRT COATING:
- NON-COATED
- BORE - OVERSIZE METRIC:
- +0.50 MM
- BORE SIZE METRIC:
- 66.50 MM
- MODEL:
- PRO-LITE
- PRODUCT NAME:
- REBUILD KIT
- TYPE:
- TOP END
- BORE - OVERSIZE:
- +0,50 MM
- UNITS:
- KIT
- DISPLACEMENT:
- 195 CC
- ENGINE TYPE:
- 2-STROKE
- PISTON DIAMETER METRIC:
- 66.45 MM
- PISTON MATERIAL:
- 4032 ALUMINUM ALLOY
- RIDING STYLE:
- ATV
- STROKE LENGTH METRIC:
- 57.00 MM
$230.95 -
Wiseco Piston Kit Standard Bore 93mm 10.6:1 Compression Polaris RZR XP 900 40045M09300
WISECO
$224.95The Wiseco Piston Kit is engineered for the RZR XP 900 to deliver consistent power and reliability under demanding conditions. Whether you're pushing hard on the track or exploring rough terrain, this precision-machined piston ensures optimal combustion...09102818- SKU:
- 09102818
- Availability:
- Ships Same Business Day
- Weight:
- 1.10 LBS
- BORE SIZE METRIC:
- 93.00 MM
- PISTON MATERIAL:
- ALUMINUM ALLOY
- PISTON MATERIAL:
- FORGED
- STROKE LENGTH METRIC:
- 64.50 MM
- BORE - OVERSIZE:
- STANDARD
- BORE - OVERSIZE METRIC:
- STANDARD
- ENGINE TYPE:
- 4-STROKE
- PRODUCT NAME:
- PISTON
- SKIRT COATING:
- ARMORGLIDE®
- UNITS:
- EACH
- RIDING STYLE:
- UTV
- DISPLACEMENT:
- 876 CC
$224.95 -
Wiseco Piston Kit Honda XR400R 1996-2004 85.50mm 10:1 Compression 4606M08550
WISECO
$210.95If you're running a Honda XR400R and want measurable gains in power delivery and reliability, a fresh piston kit is one of the most direct upgrades you can make. The Wiseco 4606M08550 delivers the compression ratio and durability you need to push your...09102830- SKU:
- 09102830
- Availability:
- Ships Same Business Day
- Weight:
- 1.00 LBS
- BORE - OVERSIZE:
- +0,50 MM
- BORE - OVERSIZE METRIC:
- +0.50 MM
- DISPLACEMENT:
- 397 CC
- RIDING STYLE:
- OFF-ROAD
- STROKE LENGTH METRIC:
- 70.00 MM
- ENGINE TYPE:
- 4-STROKE
- PISTON MATERIAL:
- ALUMINUM ALLOY
- PISTON MATERIAL:
- FORGED
- PRODUCT NAME:
- PISTON
- RIDING STYLE:
- ATV
- UNITS:
- EACH
- BORE SIZE METRIC:
- 85.50 MM
- COMPRESSION RATIO IMPERIAL:
- 10.0:1
$210.95 -
Wiseco Piston Kit Standard Bore 90mm 9.5:1 Compression Honda TRX450 Foreman 4825M09000
WISECO
$194.95The TRX450 Foreman demands a piston that can handle sustained high RPM operation and varying terrain demands. This Wiseco piston kit delivers OEM-level precision with a 9.5:1 compression ratio that extracts measurable gains in peak power and mid-range...09102833- SKU:
- 09102833
- Availability:
- Ships Same Business Day
- Weight:
- 1.05 LBS
- COMPRESSION RATIO IMPERIAL:
- 9.5:1
- PISTON MATERIAL:
- FORGED
- STROKE LENGTH METRIC:
- 68.00 MM
- BORE - OVERSIZE:
- STANDARD
- BORE - OVERSIZE METRIC:
- STANDARD
- DISPLACEMENT:
- 432 CC
- ENGINE TYPE:
- 4-STROKE
- PISTON MATERIAL:
- ALUMINUM ALLOY
- PRODUCT NAME:
- PISTON
- RIDING STYLE:
- ATV
- UNITS:
- EACH
- BORE SIZE METRIC:
- 90.00 MM
$194.95 -
Wiseco Piston Kit for Honda TRX450 Foreman 1998-2004 4825M09150
WISECO
$221.32When your TRX450 Foreman's stock piston starts losing compression or showing wear, power delivery suffers and reliability becomes questionable. This Wiseco piston kit restores—and actually exceeds—factory performance specifications with precision...09102836- SKU:
- 09102836
- Availability:
- Ships Same Business Day
- Weight:
- 1.05 LBS
- BORE - OVERSIZE METRIC:
- +1.50 MM
- COMPRESSION RATIO IMPERIAL:
- 9.5:1
- STROKE LENGTH METRIC:
- 68.00 MM
- BORE - OVERSIZE:
- +1,50 MM
- PISTON MATERIAL:
- ALUMINUM ALLOY
- PISTON MATERIAL:
- FORGED
- BORE SIZE METRIC:
- 91.50 MM
- DISPLACEMENT:
- 432 CC
- ENGINE TYPE:
- 4-STROKE
- PRODUCT NAME:
- PISTON
- RIDING STYLE:
- ATV
- UNITS:
- EACH
$221.32 -
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
