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
-
WSM Piston Kit - Honda 420 - +.75 mm 50-231-06K
WSM
$105.80Quality and construction that meets or exceeds OEM, Feature improved E-clip design, Contain piston, rings, pin and clips, Additional rings available separately, Order one per cylinder, Skirts have a nonabrasive, expansion-retarding MOS2 coating to reduce...09103526- SKU:
- 09103526
- Availability:
- Ships Same Business Day
- Weight:
- 1.00 LBS
- MODEL:
- ORIGINAL
- RIDING STYLE:
- ATV
- BORE - OVERSIZE:
- +0,75 MM
- PISTON MATERIAL:
- ALUMINUM
- BORE - OVERSIZE METRIC:
- +0.75 MM
- BORE SIZE METRIC:
- 87.25 MM
- PRODUCT NAME:
- PISTON KIT
- UNITS:
- KIT
$105.80Qty in Cart: 0Quantity:Price:$105.80Subtotal: -
WSM Piston Kit - Yamaha 660 - Standard 50-544K
WSM
$114.38Quality and construction that meets or exceeds OEM, Feature improved E-clip design, Contain piston, rings, pin and clips, Additional rings available separately, Order one per cylinder, Skirts have a nonabrasive, expansion-retarding MOS2 coating to reduce...09103528- SKU:
- 09103528
- Availability:
- Ships Same Business Day
- Weight:
- 1.15 LBS
- BORE SIZE METRIC:
- 100.00 MM
- BORE - OVERSIZE:
- STANDARD
- BORE - OVERSIZE METRIC:
- STANDARD
- MODEL:
- ORIGINAL
- PRODUCT NAME:
- PISTON KIT
- RIDING STYLE:
- ATV
- UNITS:
- KIT
- RIDING STYLE:
- UTV
- PISTON MATERIAL:
- ALUMINUM
$114.38Qty in Cart: 0Quantity:Price:$114.38Subtotal: -
WSM Piston Kit - Yamaha 660 - +.50 mm 50-544-05K
WSM
$114.38Quality and construction that meets or exceeds OEM, Feature improved E-clip design, Contain piston, rings, pin and clips, Additional rings available separately, Order one per cylinder, Skirts have a nonabrasive, expansion-retarding MOS2 coating to reduce...09103529- SKU:
- 09103529
- Availability:
- Ships Same Business Day
- Weight:
- 1.35 LBS
- BORE SIZE METRIC:
- 100.50 MM
- PRODUCT NAME:
- PISTON KIT
- RIDING STYLE:
- UTV
- BORE - OVERSIZE:
- +0,50 MM
- MODEL:
- ORIGINAL
- RIDING STYLE:
- ATV
- UNITS:
- KIT
- BORE - OVERSIZE METRIC:
- +0.50 MM
- PISTON MATERIAL:
- ALUMINUM
$114.38Qty in Cart: 0Quantity:Price:$114.38Subtotal: -
WSM Piston Kit - Yamaha 660 - +1 mm 50-544-07K
WSM
$114.38Quality and construction that meets or exceeds OEM, Feature improved E-clip design, Contain piston, rings, pin and clips, Additional rings available separately, Order one per cylinder, Skirts have a nonabrasive, expansion-retarding MOS2 coating to reduce...09103530- SKU:
- 09103530
- Availability:
- Ships Same Business Day
- Weight:
- 1.35 LBS
- BORE - OVERSIZE:
- +1,00 MM
- BORE SIZE METRIC:
- 101.00 MM
- RIDING STYLE:
- UTV
- BORE - OVERSIZE METRIC:
- +1.00 MM
- MODEL:
- ORIGINAL
- PRODUCT NAME:
- PISTON KIT
- RIDING STYLE:
- ATV
- PISTON MATERIAL:
- ALUMINUM
- UNITS:
- KIT
$114.38 -
WSM Piston Kit - Yamaha 700 - Standard 50-546K
WSM
$125.11Quality and construction that meets or exceeds OEM, Feature improved E-clip design, Contain piston, rings, pin and clips, Additional rings available separately, Order one per cylinder, Skirts have a nonabrasive, expansion-retarding MOS2 coating to reduce...09103531- SKU:
- 09103531
- Availability:
- Ships Same Business Day
- Weight:
- 1.35 LBS
- BORE - OVERSIZE METRIC:
- STANDARD
- BORE - OVERSIZE:
- STANDARD
- BORE SIZE METRIC:
- 102.00 MM
- MODEL:
- ORIGINAL
- PRODUCT NAME:
- PISTON KIT
- RIDING STYLE:
- ATV
- PISTON MATERIAL:
- ALUMINUM
- RIDING STYLE:
- UTV
- UNITS:
- KIT
$125.11 -
WSM Piston Kit - Yamaha 700 - +.50 mm 50-546-05K
WSM
$125.11Quality and construction that meets or exceeds OEM, Feature improved E-clip design, Contain piston, rings, pin and clips, Additional rings available separately, Order one per cylinder, Skirts have a nonabrasive, expansion-retarding MOS2 coating to reduce...09103532- SKU:
- 09103532
- Availability:
- Ships Same Business Day
- Weight:
- 1.40 LBS
- PRODUCT NAME:
- PISTON KIT
- BORE SIZE METRIC:
- 102.50 MM
- RIDING STYLE:
- UTV
- BORE - OVERSIZE:
- +0,50 MM
- MODEL:
- ORIGINAL
- RIDING STYLE:
- ATV
- UNITS:
- KIT
- BORE - OVERSIZE METRIC:
- +0.50 MM
- PISTON MATERIAL:
- ALUMINUM
$125.11 -
WSM Piston Assembly - Polaris - +.5 mm 50-306-05PK
WSM
$90.82Quality and construction that meets or exceeds OEM, Feature improved E-clip design, Contain piston, rings, pin and clips, Additional rings available separately, Order one per cylinder, Skirts have a nonabrasive, expansion-retarding MOS2 coating to reduce...09101324- SKU:
- 09101324
- Availability:
- Ships Same Business Day
- Weight:
- 1.05 LBS
- BORE - OVERSIZE METRIC:
- +0.50 MM
- RIDING STYLE:
- ATV
- BORE SIZE METRIC:
- 83.50 MM
- BORE - OVERSIZE:
- +0,50 MM
- MODEL:
- ORIGINAL
- PISTON MATERIAL:
- ALUMINUM
- PRODUCT NAME:
- PISTON KIT
- UNITS:
- KIT
$90.82 -
WSM Piston Assembly - Polaris - +1 mm 50-306-07PK
WSM
$90.82Quality and construction that meets or exceeds OEM, Feature improved E-clip design, Contain piston, rings, pin and clips, Additional rings available separately, Order one per cylinder, Skirts have a nonabrasive, expansion-retarding MOS2 coating to reduce...09101325- SKU:
- 09101325
- Availability:
- Ships Same Business Day
- Weight:
- 1.15 LBS
- RIDING STYLE:
- ATV
- UNITS:
- KIT
- BORE - OVERSIZE METRIC:
- +1.00 MM
- MODEL:
- ORIGINAL
- PISTON MATERIAL:
- ALUMINUM
- PRODUCT NAME:
- PISTON KIT
- BORE - OVERSIZE:
- +1,00 MM
- BORE SIZE METRIC:
- 84.00 MM
$90.82 -
VERTEX Piston Kit 24502A
VERTEX
$292.95All pistons are heat treated with a T-5 hardening and tempering cycle, All piston skirts are coated with a high-tech Molybdenum Disulphite coating for faster break-in time and increased piston life, Cast piston kits are gravity cast aluminum alloy (not...09106271- SKU:
- 09106271
- Availability:
- Ships Same Business Day
- Weight:
- 1.05 LBS
$292.95 -
VERTEX Piston Kit 24502B
VERTEX
$292.95All pistons are heat treated with a T-5 hardening and tempering cycle, All piston skirts are coated with a high-tech Molybdenum Disulphite coating for faster break-in time and increased piston life, Cast piston kits are gravity cast aluminum alloy (not...09106272- SKU:
- 09106272
- Availability:
- Ships Same Business Day
- Weight:
- 0.95 LBS
$292.95 -
Wiseco Piston Kit Yamaha YXE700WDH 2016 11:1 40141M10300
WISECO
$224.95Elevate your performance with the WISECO Piston Kit, expertly crafted from high-silicon alloy to ensure exceptional strength and reliability. Designed for both trail and racing applications, this complete piston kit includes rings and circlips, making it...09104178- SKU:
- 09104178
- Availability:
- Ships Same Business Day
- Weight:
- 1.35 LBS
- PISTON DIAMETER METRIC:
- 102.92 MM
- UNITS:
- KIT
- COMPRESSION RATIO IMPERIAL:
- 11.0:1
- STROKE LENGTH METRIC:
- 85.00 MM
- ENGINE TYPE:
- 4-STROKE
- MODEL:
- FORGED SERIES
- PRODUCT NAME:
- PISTON KIT
- RIDING STYLE:
- ATV
- BORE - OVERSIZE:
- STANDARD
- BORE - OVERSIZE METRIC:
- STANDARD
- BORE SIZE METRIC:
- 103.00 MM
- DISPLACEMENT:
- 708 CC
- PISTON MATERIAL:
- FORGED 2618 ALUMINUM
- SKIRT COATING:
- ARMORGLIDE®
$224.95 -
Wiseco Piston Kit 74.5mm 12:1 Compression Honda TRX250X 1987-1992 4440M07450
WISECO
$194.95Engineered for performance and reliability, the WISECO Piston is crafted from a high-silicon alloy, ensuring exceptional strength for both trail and racing applications. This piston is designed to enhance your engine's efficiency and power, making it a...4440M07450- SKU:
- 4440M07450
- Availability:
- Ships Same Business Day
- Weight:
- 0.80 LBS
- DISPLACEMENT:
- 246 CC
- ENGINE TYPE:
- 4-STROKE
- PISTON MATERIAL:
- FORGED 2618 ALUMINUM
- PRODUCT NAME:
- PISTON KIT
- RIDING STYLE:
- ATV
- STROKE LENGTH METRIC:
- 57.30 MM
- BORE - OVERSIZE METRIC:
- +0.50 MM
- MODEL:
- FORGED SERIES
- SKIRT COATING:
- NON-COATED
- COMPRESSION RATIO IMPERIAL:
- 12.0:1
- BORE - OVERSIZE:
- +0,50 MM
- BORE SIZE METRIC:
- 74.50 MM
- PISTON DIAMETER METRIC:
- 74.45 MM
- UNITS:
- KIT
$194.95 -
Wiseco Piston Kit for 2009-2015 Polaris RZR 170 40143M06100
WISECO
$169.95Upgrade your Polaris RZR 170 with the WISECO Piston Kit, engineered from a high-silicon alloy to deliver exceptional strength and reliability. This complete piston kit is perfect for both trail riding and competitive racing, ensuring optimal performance...09104180- SKU:
- 09104180
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- BORE - OVERSIZE:
- STANDARD
- BORE - OVERSIZE METRIC:
- STANDARD
- ENGINE TYPE:
- 4-STROKE
- PISTON DIAMETER METRIC:
- 60.95 MM
- STROKE LENGTH METRIC:
- 58.00 MM
- BORE SIZE METRIC:
- 61.00 MM
- DISPLACEMENT:
- 169 CC
- PISTON MATERIAL:
- 4032 ALUMINUM ALLOY
- UNITS:
- KIT
- PRODUCT NAME:
- PISTON KIT
- COMPRESSION RATIO IMPERIAL:
- STOCK
- MODEL:
- FORGED SERIES
- RIDING STYLE:
- UTV
- SKIRT COATING:
- NON-COATED
$169.95 -
On Sale
Wiseco Piston Kit Kawasaki KRF750 Teryx 2012-2013 11.5:1 40146M08700
WISECO
MSRP: $184.95Now: $144.00Was: $184.95Experience unparalleled performance with the WISECO Piston Kit KFV750, designed for both trail and racing enthusiasts. Crafted from high-silicon alloy, this piston kit ensures exceptional strength and reliability, making it the ideal choice for...09104183- SKU:
- 09104183
- Availability:
- Ships Same Business Day
- Weight:
- 0.95 LBS
- BORE - OVERSIZE METRIC:
- +2.00 MM
- SKIRT COATING:
- NON-COATED
- STROKE LENGTH METRIC:
- 66.00 MM
- UNITS:
- KIT
- BORE SIZE METRIC:
- 87.00 MM
- RIDING STYLE:
- UTV
- BORE - OVERSIZE:
- +2,00 MM
- DISPLACEMENT:
- 749 CC
- ENGINE TYPE:
- 4-STROKE
- MODEL:
- FORGED SERIES
- PISTON DIAMETER METRIC:
- 86.95 MM
- PRODUCT NAME:
- PISTON KIT
- RIDING STYLE:
- ATV
- COMPRESSION RATIO IMPERIAL:
- 11.5:1
- PISTON MATERIAL:
- FORGED 2618 ALUMINUM
MSRP: $184.95Now: $144.00Was: $184.95 -
On Sale
Wiseco Piston Kit 82mm 10.2:1 for Polaris RZR 800 2008-2014 4961M08200
WISECO
MSRP: $184.95Now: $121.00Was: $184.95Enhance your RZR800's performance with the WISECO Piston Kit, engineered from high-silicon alloy for exceptional durability and reliability. This kit is designed for both trail and racing enthusiasts, ensuring optimal power and efficiency in every ride...09104184- SKU:
- 09104184
- Availability:
- Ships Same Business Day
- Weight:
- 0.95 LBS
- BORE - OVERSIZE METRIC:
- +2.00 MM
- DISPLACEMENT:
- 769 CC
- PISTON DIAMETER METRIC:
- 81.94 MM
- PISTON MATERIAL:
- 4032 ALUMINUM ALLOY
- UNITS:
- KIT
- BORE - OVERSIZE:
- +2,00 MM
- COMPRESSION RATIO IMPERIAL:
- 10.2:1
- ENGINE TYPE:
- 4-STROKE
- MODEL:
- FORGED SERIES
- RIDING STYLE:
- ATV
- STROKE LENGTH METRIC:
- 76.50 MM
- BORE SIZE METRIC:
- 82.00 MM
- RIDING STYLE:
- UTV
- PRODUCT NAME:
- PISTON KIT
- SKIRT COATING:
- ARMORGLIDE®
MSRP: $184.95Now: $121.00Was: $184.95Qty in Cart: 0Quantity:Price:MSRP: $184.95Now: $121.00Was: $184.95Subtotal: -
Wiseco Piston Kit 82mm 12:1 Compression for Polaris RZR 800 2008-2014 4963M08200
WISECO
$147.95Experience unparalleled performance with the WISECO Piston Kit designed specifically for the RZR800. Crafted from a high-silicon alloy, this piston guarantees exceptional strength and reliability, making it ideal for both trail riding and competitive...09104185- SKU:
- 09104185
- Availability:
- Ships Same Business Day
- Weight:
- 0.90 LBS
- MODEL:
- FORGED SERIES
- RIDING STYLE:
- UTV
- BORE SIZE METRIC:
- 82.00 MM
- PISTON MATERIAL:
- 4032 ALUMINUM ALLOY
- SKIRT COATING:
- ARMORGLIDE®
- UNITS:
- KIT
- BORE - OVERSIZE METRIC:
- +2.00 MM
- DISPLACEMENT:
- 769 CC
- PISTON DIAMETER METRIC:
- 81.94 MM
- PRODUCT NAME:
- PISTON KIT
- RIDING STYLE:
- ATV
- STROKE LENGTH METRIC:
- 76.50 MM
- BORE - OVERSIZE:
- +2,00 MM
- COMPRESSION RATIO IMPERIAL:
- 12.0:1
- ENGINE TYPE:
- 4-STROKE
$147.95 -
Wiseco Piston Kit 71.50mm 1985-1986 Suzuki LT250R QuadRacer 534M07150
WISECO
$229.95Elevate your racing experience with the WISECO +1.50 mm piston, engineered from high-silicon aluminum alloy for unmatched strength and reliability. Designed for both competitive racing and trail riding, this piston maximizes horsepower and torque,...534M07150- SKU:
- 534M07150
- Availability:
- Ships Same Business Day
- Weight:
- 0.75 LBS
- PISTON MATERIAL:
- ALUMINUM ALLOY
- PISTON MATERIAL:
- FORGED
- PRODUCT NAME:
- PISTON
- RIDING STYLE:
- ATV
- UNITS:
- EACH
- BORE SIZE METRIC:
- 71.50 MM
- DISPLACEMENT:
- 247 CC
- STROKE LENGTH METRIC:
- 64.80 MM
- BORE - OVERSIZE:
- +1,50 MM
- BORE - OVERSIZE METRIC:
- +1.50 MM
- STROKE LENGTH:
- 64,80 MM
$229.95 -
Wiseco Piston 72.00 mm 2.00 mm Oversize Suzuki LT250R QuadRacer 534M07200
WISECO
$229.95Elevate your racing experience with the Wiseco +2.00 mm piston designed specifically for the Suzuki LT-R 250 QuadRacer. Crafted from advanced high-silicon aluminum alloy, this piston ensures exceptional strength, longevity, and enhanced horsepower,...534M07200- SKU:
- 534M07200
- Availability:
- Ships Same Business Day
- Weight:
- 0.80 LBS
- BORE SIZE METRIC:
- 72.00 MM
- STROKE LENGTH:
- 64,80 MM
- BORE - OVERSIZE:
- +2,00 MM
- BORE - OVERSIZE METRIC:
- +2.00 MM
- RIDING STYLE:
- ATV
- DISPLACEMENT:
- 247 CC
- STROKE LENGTH METRIC:
- 64.80 MM
- PISTON MATERIAL:
- ALUMINUM ALLOY
- PISTON MATERIAL:
- FORGED
- PRODUCT NAME:
- PISTON
- UNITS:
- EACH
$229.95 -
Wiseco Piston Standard Yamaha RZ 350 1984-1985 513M06400
WISECO
$154.95Elevate your performance with the Wiseco Piston for the Yamaha RZ 350, crafted from high-silicon aluminum alloy for unparalleled strength and reliability. Designed for both trail and racing applications, this piston guarantees enhanced durability and...513M06400- SKU:
- 513M06400
- Availability:
- Ships Same Business Day
- Weight:
- 0.60 LBS
- BORE - OVERSIZE:
- STANDARD
- BORE SIZE METRIC:
- 64.00 MM
- PISTON MATERIAL:
- ALUMINUM ALLOY
- PISTON MATERIAL:
- FORGED
- UNITS:
- EACH
- BORE - OVERSIZE METRIC:
- STANDARD
- DISPLACEMENT:
- 346 CC
- PRODUCT NAME:
- PISTON
- RIDING STYLE:
- STREET
- STROKE LENGTH:
- 54,00 MM
- STROKE LENGTH METRIC:
- 54.00 MM
$154.95 -
Wiseco Piston 0.50 mm Overbore Yamaha Banshee 350 1987-2006 513M06450
WISECO
$154.95Elevate your racing experience with the Wiseco Piston, expertly crafted from high-silicon aluminum alloy for unmatched durability and performance. Designed for both trail and competitive racing applications, this piston ensures enhanced horsepower and...513M06450- SKU:
- 513M06450
- Availability:
- Ships Same Business Day
- Weight:
- 0.60 LBS
- BORE - OVERSIZE:
- +0,50 MM
- RIDING STYLE:
- ATV
- BORE - OVERSIZE METRIC:
- +0.50 MM
- STROKE LENGTH:
- 54,00 MM
- PISTON MATERIAL:
- ALUMINUM ALLOY
- PISTON MATERIAL:
- FORGED
- UNITS:
- EACH
- BORE SIZE METRIC:
- 64.50 MM
- DISPLACEMENT:
- 352 CC
- PRODUCT NAME:
- PISTON
- STROKE LENGTH METRIC:
- 54.00 MM
$154.95
