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
-
PROX Piston Kit 01.2487.100
PROX
$99.95Your engine's heart needs precision components that can handle high RPM demands and sustained performance. The PROX Piston Kit 01.2487.100 delivers OEM-spec reliability with the exacting tolerances required for serious racers and rebuild professionals...09101200- SKU:
- 09101200
- Availability:
- Ships Same Business Day
- Weight:
- 1.01 LBS
- BORE SIZE METRIC:
- 84.00 MM
- PRODUCT NAME:
- PISTON KIT
- ENGINE TYPE:
- 4-STROKE
- PISTON DIAMETER METRIC:
- 84.00 MM
- PISTON MATERIAL:
- ALUMINUM ALLOY
- PISTON SIZE METRIC:
- +1.00 MM
- RIDING STYLE:
- ATV
- UNITS:
- EACH
$99.95Qty in Cart: 0Quantity:Price:$99.95Subtotal: -
PROX Piston Kit 01.2706.C
PROX
$149.95Piston failure doesn't happen gradually—it happens catastrophically, taking your engine with it. The PROX Piston Kit 01.2706.C delivers OEM-equivalent reliability with Japanese manufacturing precision, ensuring your engine handles sustained high RPM and...09101203- SKU:
- 09101203
- Availability:
- Ships Same Business Day
- Weight:
- 1.35 LBS
- BORE SIZE METRIC:
- 101.96 MM
- PISTON SIZE METRIC:
- STANDARD SIZE C
- ENGINE TYPE:
- 4-STROKE
- PISTON MATERIAL:
- ALUMINUM ALLOY
- PRODUCT NAME:
- PISTON KIT
- RIDING STYLE:
- ATV
- UNITS:
- EACH
- PISTON DIAMETER METRIC:
- 101.96 MM
- RIDING STYLE:
- UTV
$149.95Qty in Cart: 0Quantity:Price:$149.95Subtotal: -
PROX Piston Kit 01.2435.B
PROX
$210.95Stock pistons wear down over time, leading to loss of compression, increased blow-by, and reduced engine efficiency. The PROX Piston Kit 01.2435.B restores your engine to OEM performance specifications with precision-engineered components manufactured in...09100604- SKU:
- 09100604
- Availability:
- Ships Same Business Day
- Weight:
- 0.92 LBS
- ENGINE TYPE:
- 4-STROKE
- PISTON DIAMETER METRIC:
- 94.96 MM
- PISTON MATERIAL:
- ALUMINUM ALLOY
- RIDING STYLE:
- ATV
- UNITS:
- EACH
- PISTON SIZE METRIC:
- +0.25 MM
- BORE SIZE METRIC:
- 94.96 MM
- PRODUCT NAME:
- PISTON KIT
$210.95 -
On Sale
PROX Piston Kit 01.2281.050
PROX
MSRP: $121.95Now: $90.00Was: $121.95Worn or damaged pistons compromise combustion efficiency, reduce power output, and risk catastrophic engine failure. The PROX Piston Kit 01.2281.050 restores OEM-specification performance with precision-engineered components manufactured to exacting...PX4172- SKU:
- PX4172
- Availability:
- Ships Same Business Day
- Weight:
- 0.63 LBS
- PISTON DIAMETER METRIC:
- 66.50 MM
- BORE SIZE METRIC:
- 66.50 MM
- ENGINE TYPE:
- 2-STROKE
- PRODUCT NAME:
- PISTON KIT
- PISTON MATERIAL:
- ALUMINUM ALLOY
- PISTON SIZE METRIC:
- +0.50 MM
- RIDING STYLE:
- ATV
- UNITS:
- EACH
MSRP: $121.95Now: $90.00Was: $121.95 -
On Sale
PROX Piston Kit 01.2281.100
PROX
MSRP: $121.95Now: $90.00Was: $121.95Worn or damaged pistons compromise engine efficiency, reduce horsepower, and risk catastrophic failure. The PROX Piston Kit 01.2281.100 restores your engine to OEM performance specifications with precision-engineered components manufactured to exacting...PX4174- SKU:
- PX4174
- Availability:
- Ships Same Business Day
- Weight:
- 0.63 LBS
- BORE SIZE METRIC:
- 67.00 MM
- PISTON MATERIAL:
- ALUMINUM ALLOY
- PISTON DIAMETER METRIC:
- 67.00 MM
- PRODUCT NAME:
- PISTON KIT
- ENGINE TYPE:
- 2-STROKE
- PISTON SIZE METRIC:
- +1.00 MM
- RIDING STYLE:
- ATV
- UNITS:
- EACH
MSRP: $121.95Now: $90.00Was: $121.95 -
On Sale
PROX Piston Kit 01.2281.025
PROX
MSRP: $121.95Now: $90.00Was: $121.95A worn or damaged piston directly compromises compression, power delivery, and engine reliability—making a quality replacement essential for sustained performance. The PROX Piston Kit 01.2281.025 delivers OEM-equivalent engineering with precision...PX4171- SKU:
- PX4171
- Availability:
- Ships Same Business Day
- Weight:
- 0.63 LBS
- BORE SIZE METRIC:
- 66.25 MM
- PRODUCT NAME:
- PISTON KIT
- PISTON DIAMETER METRIC:
- 66.35 MM
- PISTON SIZE METRIC:
- +0.25 MM
- ENGINE TYPE:
- 2-STROKE
- PISTON MATERIAL:
- ALUMINUM ALLOY
- RIDING STYLE:
- ATV
- UNITS:
- EACH
MSRP: $121.95Now: $90.00Was: $121.95 -
VERTEX Piston Kit 23644A
VERTEX
$217.95A piston kit is your engine's foundation for reliable power delivery and longevity. The VERTEX Piston Kit 23644A combines forged 2618 aluminum construction with factory-standard OEM specifications, ensuring your engine maintains peak performance while...09102642- SKU:
- 09102642
- Availability:
- Ships Same Business Day
- Weight:
- 0.88 LBS
- ENGINE TYPE:
- 4-STROKE
- PISTON MATERIAL:
- FORGED 2618 ALUMINUM
- RIDING STYLE:
- UTV
- COMPRESSION RATIO IMPERIAL:
- 12.0:1
- CYLINDER DIAMETER METRIC:
- 80.00 MM
- SKIRT COATING:
- MOLYBDENUM DISULPHITE
- STYLE:
- FORGED HIGH COMPRESSION
- UNITS:
- KIT
- DISPLACEMENT:
- 760 CC
- PISTON DIAMETER METRIC:
- 79.95 MM
- PRODUCT NAME:
- PISTON KIT
$217.95Qty in Cart: 0Quantity:Price:$217.95Subtotal: -
VERTEX Piston Kit 23639A
VERTEX
$315.95The VERTEX Piston Kit 23639A delivers the precision engineering and durability your engine demands, whether you're rebuilding after a season or upgrading for peak performance. Engineered with premium materials and heat-treated construction, these pistons...09102028- SKU:
- 09102028
- Availability:
- Ships Same Business Day
- Weight:
- 1.32 LBS
- COMPRESSION RATIO IMPERIAL:
- 10.9:1
- PRODUCT NAME:
- PISTON KIT
- DISPLACEMENT:
- 700 CC
- SKIRT COATING:
- MOLYBDENUM DISULPHITE
- STYLE:
- FORGED HIGH COMPRESSION
- UNITS:
- KIT
- CYLINDER DIAMETER METRIC:
- 102.00 MM
- ENGINE TYPE:
- 4-STROKE
- PISTON DIAMETER METRIC:
- 101.96 MM
- PISTON MATERIAL:
- FORGED 2618 ALUMINUM
- RIDING STYLE:
- ATV
$315.95Qty in Cart: 0Quantity:Price:$315.95Subtotal: -
Wiseco Piston Kit 66.50mm Honda XR200R 1986-2002 4156M06650
WISECO
$174.95If you're rebuilding your Honda XR200R or pushing it to its limits on the track, a quality piston kit is non-negotiable—and Wiseco's proven track record in high-performance pistons makes this the right choice. This 66.50mm kit delivers the strength and...4156M06650- SKU:
- 4156M06650
- Availability:
- Ships Same Business Day
- Weight:
- 0.60 LBS
- BORE - OVERSIZE:
- +1,00 MM
- DISPLACEMENT:
- 192 CC
- PISTON DIAMETER METRIC:
- 66.45 MM
- PISTON MATERIAL:
- FORGED 2618 ALUMINUM
- STROKE LENGTH METRIC:
- 57.80 MM
- BORE SIZE METRIC:
- 66.50 MM
- COMPRESSION RATIO IMPERIAL:
- 10.25:1
- RIDING STYLE:
- OFF-ROAD
- SKIRT COATING:
- NON-COATED
- BORE - OVERSIZE METRIC:
- +1.00 MM
- ENGINE TYPE:
- 4-STROKE
- PRODUCT NAME:
- PISTON KIT
- RIDING STYLE:
- ATV
- UNITS:
- KIT
- MODEL:
- FORGED SERIES
$174.95Qty in Cart: 0Quantity:Price:$174.95Subtotal: -
Wiseco Piston Kit for Polaris Sportsman 850 2015-2022 40106M08700
WISECO
$224.95When you're pushing your Sportsman 850 hard on the trail or at the track, factory pistons reach their limits fast. The Wiseco Piston Kit delivers the strength and precision engineering needed to handle aggressive riding and extreme conditions without...09104172- SKU:
- 09104172
- Availability:
- Ships Same Business Day
- Weight:
- 0.95 LBS
- BORE - OVERSIZE:
- STANDARD
- BORE SIZE METRIC:
- 87.00 MM
- DISPLACEMENT:
- 844 CC
- ENGINE TYPE:
- 4-STROKE
- RIDING STYLE:
- ATV
- STROKE LENGTH METRIC:
- 71.00 MM
- PISTON MATERIAL:
- FORGED 2618 ALUMINUM
- PRODUCT NAME:
- PISTON KIT
- BORE - OVERSIZE METRIC:
- STANDARD
- COMPRESSION RATIO IMPERIAL:
- STOCK
- PISTON DIAMETER METRIC:
- 86.92 MM
- SKIRT COATING:
- ARMORGLIDE®
- UNITS:
- KIT
- MODEL:
- FORGED SERIES
$224.95Qty in Cart: 0Quantity:Price:$224.95Subtotal: -
Wiseco Piston Kit Kawasaki KSF250 Mojave 1987-2004 74.5mm 11.5:1 4418M07450
WISECO
$194.95When your KSF250 Mojave's original piston reaches the end of its service life, a quality replacement directly impacts engine reliability and power delivery. The Wiseco 4418M07450 delivers the durability and precision fit you need to restore full...4418M07450- SKU:
- 4418M07450
- Availability:
- Ships Same Business Day
- Weight:
- 0.85 LBS
- BORE SIZE METRIC:
- 74.50 MM
- PISTON DIAMETER METRIC:
- 74.45 MM
- DISPLACEMENT:
- 249 CC
- PISTON MATERIAL:
- FORGED 2618 ALUMINUM
- STROKE LENGTH METRIC:
- 58.00 MM
- BORE - OVERSIZE:
- +0,50 MM
- COMPRESSION RATIO IMPERIAL:
- 11.5:1
- PRODUCT NAME:
- PISTON KIT
- RIDING STYLE:
- STREET
- SKIRT COATING:
- NON-COATED
- UNITS:
- KIT
- BORE - OVERSIZE METRIC:
- +0.50 MM
- ENGINE TYPE:
- 4-STROKE
- MODEL:
- FORGED SERIES
- RIDING STYLE:
- ATV
$194.95Qty in Cart: 0Quantity:Price:$194.95Subtotal: -
Wiseco Piston Kit for Honda TRX680 Rincon 2006-2019 102mm 10:1 40066M10200
WISECO
$224.95The Honda TRX680 Rincon demands a piston that can handle aggressive riding conditions without compromise. Wiseco's 102mm piston kit delivers the compression ratio and durability you need to maximize horsepower and torque while maintaining reliability...09103924- SKU:
- 09103924
- Availability:
- Ships Same Business Day
- Weight:
- 1.40 LBS
- BORE - OVERSIZE:
- STANDARD
- RIDING STYLE:
- UTV
- BORE - OVERSIZE METRIC:
- STANDARD
- ENGINE TYPE:
- 4-STROKE
- PISTON MATERIAL:
- ALUMINUM ALLOY
- PISTON MATERIAL:
- FORGED
- PRODUCT NAME:
- PISTON
- RIDING STYLE:
- ATV
- UNITS:
- EACH
- BORE SIZE METRIC:
- 102.00 MM
- COMPRESSION RATIO IMPERIAL:
- 10.0:1
- DISPLACEMENT:
- 102 CC
- STROKE LENGTH METRIC:
- 82.60 MM
$224.95Qty in Cart: 0Quantity:Price:$224.95Subtotal: -
Wiseco Piston Kit 71.5mm 8.7:1 Compression Yamaha YFM250 Bear Tracker 2000-2002 4675M07150
WISECO
$194.95If you're rebuilding your YFM250 Bear Tracker or pushing it to its limits on the trail, a quality piston kit is non-negotiable for reliability and performance. Wiseco's high-silicon alloy construction delivers the strength needed to handle sustained high...4675M07150- SKU:
- 4675M07150
- Availability:
- Ships Same Business Day
- Weight:
- 0.72 LBS
- BORE - OVERSIZE METRIC:
- +0.50 MM
- PISTON MATERIAL:
- FORGED 2618 ALUMINUM
- BORE - OVERSIZE:
- +0,50 MM
- BORE SIZE METRIC:
- 71.50 MM
- COMPRESSION RATIO IMPERIAL:
- 8.7:1
- ENGINE TYPE:
- 4-STROKE
- PISTON DIAMETER METRIC:
- 71.45 MM
- RIDING STYLE:
- ATV
- STROKE LENGTH METRIC:
- 58.00 MM
- PRODUCT NAME:
- PISTON KIT
- DISPLACEMENT:
- 229.6 CC
- MODEL:
- FORGED SERIES
- SKIRT COATING:
- NON-COATED
- UNITS:
- KIT
$194.95Qty in Cart: 0Quantity:Price:$194.95Subtotal: -
Wiseco Piston Kit 71mm 1.00mm Oversize Yamaha YFM225 Moto-4 1986-1988 4312M07100
WISECO
$174.95If you're rebuilding or refreshing your YFM225 Moto-4 engine, a quality piston kit is non-negotiable—it directly impacts compression, power delivery, and engine longevity. The Wiseco 71mm 1.00mm oversize piston delivers the precision fit and durability...4312M07100- SKU:
- 4312M07100
- Availability:
- Ships Same Business Day
- Weight:
- 0.40 LBS
- PISTON MATERIAL:
- FORGED 2618 ALUMINUM
- DISPLACEMENT:
- 223.6 CC
- ENGINE TYPE:
- 4-STROKE
- PISTON DIAMETER METRIC:
- 70.95 MM
- RIDING STYLE:
- ATV
- RIDING STYLE:
- OFF-ROAD
- STROKE LENGTH METRIC:
- 58.00 MM
- BORE - OVERSIZE METRIC:
- +1.00 MM
- COMPRESSION RATIO IMPERIAL:
- 10.25:1
- SKIRT COATING:
- NON-COATED
- UNITS:
- KIT
- BORE - OVERSIZE:
- +1,00 MM
- BORE SIZE METRIC:
- 71.00 MM
- MODEL:
- FORGED SERIES
- PRODUCT NAME:
- PISTON KIT
$174.95Qty in Cart: 0Quantity:Price:$174.95Subtotal: -
Wiseco Piston Kit 0.50mm Oversize 65.5mm 12:1 Compression Honda ATC200E 1982-1983 4289M06550
WISECO
$174.95When you're rebuilding or refreshing your Honda ATC200E engine, piston quality directly impacts reliability and performance. This Wiseco kit delivers the precision engineering and material strength needed to handle both trail demands and racing...4289M06550- SKU:
- 4289M06550
- Availability:
- Ships Same Business Day
- Weight:
- 0.55 LBS
- BORE - OVERSIZE:
- +0,50 MM
- COMPRESSION RATIO IMPERIAL:
- 12.0:1
- PISTON DIAMETER METRIC:
- 65.45 MM
- UNITS:
- KIT
- MODEL:
- FORGED SERIES
- PRODUCT NAME:
- PISTON KIT
- SKIRT COATING:
- NON-COATED
- BORE - OVERSIZE METRIC:
- +0.50 MM
- BORE SIZE METRIC:
- 65.50 MM
- DISPLACEMENT:
- 191.8 CC
- PISTON MATERIAL:
- FORGED 2618 ALUMINUM
- ENGINE TYPE:
- 4-STROKE
- RIDING STYLE:
- ATV
- STROKE LENGTH METRIC:
- 57.80 MM
$174.95Qty in Cart: 0Quantity:Price:$174.95Subtotal: -
Wiseco Piston Kit 66mm 12:1 Compression for 1981-1986 Honda ATC200S 4289M06600
WISECO
$174.95If you're running an 1981-1986 Honda ATC200S and demand more power without sacrificing reliability, this Wiseco piston kit delivers the compression ratio and durability needed for serious trail and racing performance. The 12:1 compression ratio maximizes...4289M06600- SKU:
- 4289M06600
- Availability:
- Ships Same Business Day
- Weight:
- 0.62 LBS
- PISTON MATERIAL:
- FORGED 2618 ALUMINUM
- BORE - OVERSIZE:
- +1,00 MM
- DISPLACEMENT:
- 191.8 CC
- MODEL:
- FORGED SERIES
- PISTON DIAMETER METRIC:
- 65.95 MM
- PRODUCT NAME:
- PISTON KIT
- SKIRT COATING:
- NON-COATED
- BORE - OVERSIZE METRIC:
- +1.00 MM
- COMPRESSION RATIO IMPERIAL:
- 12.0:1
- UNITS:
- KIT
- BORE SIZE METRIC:
- 66.00 MM
- ENGINE TYPE:
- 4-STROKE
- RIDING STYLE:
- ATV
- STROKE LENGTH METRIC:
- 57.80 MM
$174.95Qty in Cart: 0Quantity:Price:$174.95Subtotal: -
Wiseco Piston +2.00 mm Yamaha Blaster 200 4x2 1988-2006 573M06800
WISECO
$166.95Stock pistons in your Yamaha Blaster 200 are a limiting factor if you're serious about performance. A forged Wiseco piston upgrade delivers measurable increases in horsepower and compression while handling the demands of both trail riding and racing...573M06800- SKU:
- 573M06800
- Availability:
- Ships Same Business Day
- Weight:
- 0.62 LBS
- PRODUCT NAME:
- PISTON
- BORE - OVERSIZE:
- +2,00 MM
- DISPLACEMENT:
- 195 CC
- PISTON MATERIAL:
- ALUMINUM ALLOY
- PISTON MATERIAL:
- FORGED
- RIDING STYLE:
- ATV
- UNITS:
- EACH
- BORE - OVERSIZE METRIC:
- +2.00 MM
- BORE SIZE METRIC:
- 68.00 MM
- STROKE LENGTH:
- 57,00 MM
- STROKE LENGTH METRIC:
- 57.00 MM
$166.95Qty in Cart: 0Quantity:Price:$166.95Subtotal: -
Wiseco Piston Kit 82.00mm +2.00mm Honda FL400R Pilot 1989-1990 577M08200
WISECO
$229.95If you're running a Honda FL400R Pilot and serious about extracting every bit of performance, a properly matched piston kit is non-negotiable. This Wiseco +2.00mm kit delivers the compression and durability you need to push your engine harder without...577M08200- SKU:
- 577M08200
- Availability:
- Ships Same Business Day
- Weight:
- 1.10 LBS
- BORE SIZE METRIC:
- 82.00 MM
- DISPLACEMENT:
- 397 CC
- PISTON MATERIAL:
- ALUMINUM
- STROKE LENGTH:
- 79,00 MM
- BORE - OVERSIZE:
- +2,00 MM
- BORE - OVERSIZE METRIC:
- +2.00 MM
- ENGINE TYPE:
- 2-STROKE
- UNITS:
- EACH
- RIDING STYLE:
- UTV
- PRODUCT NAME:
- PISTON
- STROKE LENGTH METRIC:
- 79.00 MM
$229.95Qty in Cart: 0Quantity:Price:$229.95Subtotal: -
Wiseco Piston Kit for Honda CR250R 1984-1985 and TRX250R 1985-1986 PK1080
WISECO
$284.95When you're pushing a CR250R or TRX250R to its limits, the factory piston simply won't cut it. The Wiseco PK1080 kit gives you the strength and thermal stability needed to handle sustained high-RPM performance without sacrificing reliability. Whether...09030358- SKU:
- 09030358
- Availability:
- Ships Same Business Day
- Weight:
- 1.25 LBS
- BORE - OVERSIZE METRIC:
- +2.00 MM
- BORE SIZE METRIC:
- 68.00 MM
- DISPLACEMENT:
- 246 CC
- MODEL:
- PRO-LITE
- PISTON DIAMETER METRIC:
- 67.92 MM
- SKIRT COATING:
- NON-COATED
- STROKE LENGTH METRIC:
- 72.00 MM
- UNITS:
- KIT
- PRODUCT NAME:
- REBUILD KIT
- TYPE:
- TOP END
- BORE - OVERSIZE:
- +2,00 MM
- ENGINE TYPE:
- 2-STROKE
- PISTON MATERIAL:
- 4032 ALUMINUM ALLOY
- PISTON SIZE METRIC:
- +2.00 MM
- RIDING STYLE:
- ATV
$284.95Qty in Cart: 0Quantity:Price:$284.95Subtotal: -
Wiseco 1985-1986 Suzuki LT250R QuadRacer 71.50mm Piston Kit PK1532
WISECO
$289.95The Wiseco PK1532 piston kit delivers the complete top-end solution for your 1985-1986 Suzuki LT250R QuadRacer, eliminating guesswork during engine rebuilds. Forged from high-silicone bar stock, this kit resists thermal stress and maintains durability...09030646- SKU:
- 09030646
- Availability:
- Ships Same Business Day
- Weight:
- 1.55 LBS
- DISPLACEMENT:
- 247 CC
- SKIRT COATING:
- NON-COATED
- UNITS:
- KIT
- BORE - OVERSIZE:
- +1,50 MM
- BORE SIZE METRIC:
- 71.50 MM
- PISTON DIAMETER METRIC:
- 71.42 MM
- PISTON MATERIAL:
- 4032 ALUMINUM ALLOY
- STROKE LENGTH METRIC:
- 64.80 MM
- BORE - OVERSIZE METRIC:
- +1.50 MM
- ENGINE TYPE:
- 2-STROKE
- MODEL:
- PRO-LITE
- RIDING STYLE:
- ATV
- TYPE:
- TOP END
- PRODUCT NAME:
- REBUILD KIT
$289.95Qty in Cart: 0Quantity:Price:$289.95Subtotal:
