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!
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- Quantity
- Price
- Subtotal
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On Sale
Wiseco Piston Kit 77.50mm 8.6:1 Compression Kawasaki KLF300 Bayou 1986-2003 4671M07750
WISECO
MSRP: $198.02Now: $133.00Was: $198.02Enhance the performance of your Bayou or Lakota with the WISECO Piston Kit. Designed for durability and precision, this kit ensures optimal engine efficiency and reliability. Please note that a gasket kit is not included, so be sure to purchase...09102832- SKU:
- 09102832
- Availability:
- Ships Same Business Day
- Weight:
- 0.60 LBS
- BORE SIZE METRIC:
- 77.50 MM
- PISTON MATERIAL:
- ALUMINUM ALLOY
- PISTON MATERIAL:
- FORGED
- BORE - OVERSIZE METRIC:
- +1.50 MM
- COMPRESSION RATIO IMPERIAL:
- 8.6:1
- ENGINE TYPE:
- 4-STROKE
- PRODUCT NAME:
- PISTON
- RIDING STYLE:
- ATV
- UNITS:
- EACH
- BORE - OVERSIZE:
- +1,50 MM
- DISPLACEMENT:
- 290 CC
- STROKE LENGTH METRIC:
- 64.00 MM
MSRP: $198.02Now: $133.00Was: $198.02 -
Wiseco Piston Kit 96mm 12:1 Compression Honda TRX450R 2006-2009 4899M09600
WISECO
$214.95Upgrade your TRX450R/ER with the WISECO Piston Kit, designed for optimal performance and durability. This high-quality piston kit ensures a perfect fit and enhances engine efficiency, giving you the power and reliability you need on the trails. Please...09102844- SKU:
- 09102844
- Availability:
- Ships Same Business Day
- Weight:
- 0.98 LBS
- BORE - OVERSIZE:
- STANDARD
- BORE - OVERSIZE METRIC:
- STANDARD
- ENGINE TYPE:
- 4-STROKE
- RIDING STYLE:
- ATV
- STROKE LENGTH METRIC:
- 64.80 MM
- COMPRESSION RATIO IMPERIAL:
- 12.0:1
- PISTON MATERIAL:
- ALUMINUM ALLOY
- PISTON MATERIAL:
- FORGED
- PRODUCT NAME:
- PISTON
- UNITS:
- EACH
- BORE SIZE METRIC:
- 96.00 MM
- DISPLACEMENT:
- 450 CC
$214.95 -
Wiseco Piston Kit for 2009-2015 Polaris RZR 170 40143M06200
WISECO
$169.95Enhance your Polaris RZR 170's performance with the Wiseco Piston Kit, expertly crafted from high-silicon alloy for superior strength and reliability. This complete kit includes everything you need for both trail and racing applications, ensuring your...09104181- SKU:
- 09104181
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
- BORE - OVERSIZE METRIC:
- +1.00 MM
- COMPRESSION RATIO IMPERIAL:
- STOCK
- PISTON MATERIAL:
- 4032 ALUMINUM ALLOY
- UNITS:
- KIT
- PISTON DIAMETER METRIC:
- 61.95 MM
- RIDING STYLE:
- UTV
- STROKE LENGTH METRIC:
- 58.00 MM
- ENGINE TYPE:
- 4-STROKE
- MODEL:
- FORGED SERIES
- SKIRT COATING:
- NON-COATED
- BORE - OVERSIZE:
- +1,00 MM
- BORE SIZE METRIC:
- 62.00 MM
- DISPLACEMENT:
- 169 CC
- PRODUCT NAME:
- PISTON KIT
$169.95 -
Wiseco Piston Kit Yamaha YFM700R Raptor 2015-2021 40119M10200
WISECO
$224.95Upgrade your Yamaha engine with the WISECO Piston Kit, designed for enhanced performance and durability. This high-quality piston kit is engineered to provide optimal compression and efficiency, ensuring a smoother ride. Please note that the kit does not...09103931- SKU:
- 09103931
- Availability:
- Ships Same Business Day
- Weight:
- 1.30 LBS
- COMPRESSION RATIO IMPERIAL:
- 10.0:1
- DISPLACEMENT:
- 686 CC
- PISTON MATERIAL:
- FORGED
- BORE - OVERSIZE:
- STANDARD
- BORE - OVERSIZE METRIC:
- STANDARD
- BORE SIZE METRIC:
- 102.00 MM
- ENGINE TYPE:
- 4-STROKE
- PISTON MATERIAL:
- ALUMINUM ALLOY
- PRODUCT NAME:
- PISTON
- RIDING STYLE:
- ATV
- UNITS:
- EACH
- STROKE LENGTH METRIC:
- 84.00 MM
$224.95 -
Wiseco Piston Kit for 2007-2014 Polaris Outlaw 90 49mm 10.5:1 40122M04900
WISECO
$169.95Enhance your Polaris engine's performance with the WISECO Piston Kit, designed for durability and precision. This high-quality piston kit is engineered to deliver optimal power and efficiency, ensuring your vehicle runs at its best. Please note that this...09103938- SKU:
- 09103938
- Availability:
- Ships Same Business Day
- Weight:
- 0.31 LBS
- BORE - OVERSIZE METRIC:
- +2.00 MM
- BORE SIZE METRIC:
- 49.00 MM
- COMPRESSION RATIO IMPERIAL:
- 10.5:1
- STROKE LENGTH METRIC:
- 51.00 MM
- BORE - OVERSIZE:
- +2,00 MM
- DISPLACEMENT:
- 88,50 CC
- ENGINE TYPE:
- 4-STROKE
- PISTON MATERIAL:
- ALUMINUM ALLOY
- PRODUCT NAME:
- PISTON
- RIDING STYLE:
- ATV
- UNITS:
- EACH
- PISTON MATERIAL:
- FORGED
$169.95 -
Wiseco Piston Kit Yamaha YFM350 Grizzly 2007-2012 40123M08350
WISECO
$224.95Upgrade your Yamaha with the WISECO Piston Kit, designed for optimal performance and durability. This high-quality piston kit enhances engine efficiency and power, ensuring a smooth ride. Please note that the kit does not include a gasket kit, so make...09103940- SKU:
- 09103940
- Availability:
- Ships Same Business Day
- Weight:
- 1.05 LBS
- COMPRESSION RATIO IMPERIAL:
- 12.0:1
- DISPLACEMENT:
- 349 CC
- PISTON MATERIAL:
- FORGED
- RIDING STYLE:
- STREET
- BORE SIZE METRIC:
- 83.50 MM
- STROKE LENGTH METRIC:
- 64.50 MM
- ENGINE TYPE:
- 4-STROKE
- PISTON MATERIAL:
- ALUMINUM ALLOY
- PRODUCT NAME:
- PISTON
- RIDING STYLE:
- ATV
- UNITS:
- EACH
- BORE - OVERSIZE:
- +0,50 MM
- BORE - OVERSIZE METRIC:
- +0.50 MM
$224.95 -
Wiseco Yamaha YFM660R 2001-2005 Piston Kit 4737M10000
WISECO
$249.95Engineered for peak performance, the Wiseco Piston 4737M10000 is crafted from high-silicon alloy, ensuring exceptional strength and reliability for both racing and trail riding. This piston is designed to enhance engine efficiency and longevity, making...4737M10000- SKU:
- 4737M10000
- Availability:
- Ships Same Business Day
- Weight:
- 1.30 LBS
- PISTON MATERIAL:
- FORGED 2618 ALUMINUM
- BORE SIZE METRIC:
- 100.00 MM
- MODEL:
- FORGED SERIES
- PRODUCT NAME:
- PISTON KIT
- RIDING STYLE:
- UTV
- COMPRESSION RATIO IMPERIAL:
- 11.0:1
- ENGINE TYPE:
- 4-STROKE
- PISTON DIAMETER METRIC:
- 99.92 MM
- RIDING STYLE:
- ATV
- STROKE LENGTH METRIC:
- 84.00 MM
- BORE - OVERSIZE:
- STANDARD
- BORE - OVERSIZE METRIC:
- STANDARD
- DISPLACEMENT:
- 660 CC
- SKIRT COATING:
- ARMORGLIDE®
- UNITS:
- KIT
$249.95 -
Wossner Piston Kit 8075D050
WOSSNER
$122.00Experience unparalleled performance with the WOSSNER Piston Kit 8075D050, expertly crafted for 2-stroke engines. This premium kit combines advanced engineering and high-quality materials to deliver exceptional durability and efficiency, ensuring your...09104791- SKU:
- 09104791
- Availability:
- Ships Same Business Day
- Weight:
- 0.31 LBS
- PISTON SIZE METRIC:
- 64.44 MM
- RIDING STYLE:
- STREET
- BORE - OVERSIZE METRIC:
- +0.50 MM
- BORE SIZE METRIC:
- 64.50 MM
- DISPLACEMENT:
- 398 CC
- ENGINE TYPE:
- 2-STROKE
- PRODUCT NAME:
- PISTON KIT
- RIDING STYLE:
- ATV
- TYPE:
- DUAL RING
- BORE - OVERSIZE:
- +0,50 MM
- MODEL:
- STANDARD SERIES
- UNITS:
- KIT
- DISPLACEMENT:
- 347 CC
- PISTON MATERIAL:
- ALUMINUM ALLOY
- PISTON MATERIAL:
- FORGED
$122.00 -
Wossner Piston Kit 64.94mm Yamaha YFZ350 Banshee 1987-2006 8075D100
WOSSNER
$122.00Experience unparalleled performance with the WOSSNER Piston Kit 8075D100, designed specifically for 2-stroke engines. This premium kit includes everything you need for a superior upgrade, ensuring enhanced efficiency and durability. Crafted with advanced...09104793- SKU:
- 09104793
- Availability:
- Ships Same Business Day
- Weight:
- 0.71 LBS
- BORE - OVERSIZE:
- +1,00 MM
- MODEL:
- STANDARD SERIES
- PRODUCT NAME:
- PISTON KIT
- TYPE:
- DUAL RING
- DISPLACEMENT:
- 347 CC
- BORE - OVERSIZE METRIC:
- +1.00 MM
- PISTON MATERIAL:
- ALUMINUM ALLOY
- PISTON MATERIAL:
- FORGED
- PISTON SIZE METRIC:
- 64.94 MM
- RIDING STYLE:
- STREET
- BORE SIZE METRIC:
- 65.00 MM
- DISPLACEMENT:
- 398 CC
- ENGINE TYPE:
- 2-STROKE
- RIDING STYLE:
- ATV
- UNITS:
- KIT
$122.00 -
Wossner Piston Kit Yamaha Banshee 1987-2006 8075D125
WOSSNER
$132.00Experience unparalleled performance with the WOSSNER Piston Kit 8075D125, designed specifically for 2-stroke engines. Crafted with precision engineering, this piston kit enhances your engine's efficiency while ensuring durability and reliability. With...09104794- SKU:
- 09104794
- Availability:
- Ships Same Business Day
- Weight:
- 0.70 LBS
- BORE SIZE METRIC:
- 66.25 MM
- MODEL:
- STANDARD SERIES
- PRODUCT NAME:
- PISTON KIT
- TYPE:
- DUAL RING
- DISPLACEMENT:
- 398 CC
- PISTON MATERIAL:
- ALUMINUM ALLOY
- PISTON MATERIAL:
- FORGED
- RIDING STYLE:
- ATV
- RIDING STYLE:
- STREET
- DISPLACEMENT:
- 347 CC
- PISTON SIZE METRIC:
- 65.19 MM
- BORE - OVERSIZE:
- +1,25 MM
- BORE - OVERSIZE METRIC:
- +1.25 MM
- ENGINE TYPE:
- 2-STROKE
- UNITS:
- KIT
$132.00 -
Wossner Piston Kit Yamaha YFZ450 2004-2025 12.4-13.0:1 CR 8601DA
WOSSNER
$204.00Experience unparalleled performance with the WOSSNER Piston Kit 8601DA, designed specifically for 2-stroke engines. Crafted from premium materials and engineered in Germany, this piston kit ensures optimal efficiency and durability while minimizing...09104942- SKU:
- 09104942
- Availability:
- Ships Same Business Day
- Weight:
- 1.05 LBS
- BORE - OVERSIZE:
- STANDARD
- BORE - OVERSIZE METRIC:
- STANDARD
- PISTON MATERIAL:
- FORGED
- ENGINE TYPE:
- 4-STROKE
- MODEL:
- PRO SERIES
- PISTON MATERIAL:
- ALUMINUM ALLOY
- PRODUCT NAME:
- PISTON KIT
- RIDING STYLE:
- ATV
- BORE SIZE METRIC:
- 95.00 MM
- COMPRESSION RATIO IMPERIAL:
- 13.0:1
- PISTON SIZE METRIC:
- 94.95 MM
- UNITS:
- KIT
$204.00 -
Wossner Yamaha Raptor 700 2006-2014 Piston Kit 8673DA
WOSSNER
$204.00Experience unparalleled performance with the WOSSNER Piston Kit 8673DA, expertly designed for 2-stroke engines. Crafted from high-quality materials and engineered in Germany, this piston kit ensures reduced friction and enhanced durability, elevating...09104967- SKU:
- 09104967
- Availability:
- Ships Same Business Day
- Weight:
- 1.30 LBS
- BORE SIZE METRIC:
- 102.00 MM
- PRODUCT NAME:
- PISTON KIT
- BORE - OVERSIZE:
- STANDARD
- BORE - OVERSIZE METRIC:
- STANDARD
- PISTON MATERIAL:
- ALUMINUM ALLOY
- PISTON MATERIAL:
- FORGED
- PISTON SIZE METRIC:
- 101.94 MM
- COMPRESSION RATIO IMPERIAL:
- 11.0:1
- ENGINE TYPE:
- 4-STROKE
- MODEL:
- PRO SERIES
- RIDING STYLE:
- ATV
- UNITS:
- KIT
$204.00 -
Wossner Piston Kit Polaris RZR 570 2012-2021 8951D050
WOSSNER
$194.00Enhance the performance of your Polaris RZR 570 with the WOSSNER Piston Kit, meticulously engineered for superior durability and efficiency. Crafted from high-quality materials, this piston kit ensures optimal functionality and a quieter operation,...09106111- SKU:
- 09106111
- Availability:
- Ships Same Business Day
- Weight:
- 1.15 LBS
- BORE - OVERSIZE METRIC:
- +0.50 MM
- RIDING STYLE:
- UTV
- BORE - OVERSIZE:
- +0,50 MM
- MODEL:
- STANDARD SERIES
- UNITS:
- KIT
- COMPRESSION RATIO IMPERIAL:
- 10.3:1
- PISTON SIZE METRIC:
- 99.42 MM
- PRODUCT NAME:
- PISTON KIT
- RIDING STYLE:
- ATV
- BORE SIZE METRIC:
- 99.50 MM
- ENGINE TYPE:
- 4-STROKE
- PISTON MATERIAL:
- ALUMINUM ALLOY
- PISTON MATERIAL:
- FORGED
$194.00 -
Wossner Piston Kit for Polaris RZR 900 2015-2020 K8930DA-2
WOSSNER
$428.00Experience enhanced performance with the WOSSNER Piston Kit, specifically designed for the Polaris RZR 900. Crafted with precision engineering and high-quality materials, this piston kit ensures durability and efficiency under high-load conditions,...09106112- SKU:
- 09106112
- Availability:
- Ships Same Business Day
- Weight:
- 1.05 LBS
- BORE - OVERSIZE:
- STANDARD
- BORE - OVERSIZE METRIC:
- STANDARD
- ENGINE TYPE:
- 4-STROKE
- MODEL:
- PRO SERIES
- PISTON SIZE METRIC:
- 92.94 MM
- PRODUCT NAME:
- PISTON KIT
- RIDING STYLE:
- UTV
- UNITS:
- KIT
- BORE SIZE METRIC:
- 93.00 MM
- COMPRESSION RATIO IMPERIAL:
- 12.0:1
- PISTON MATERIAL:
- ALUMINUM ALLOY
- PISTON MATERIAL:
- FORGED
$428.00 -
Wossner Piston Kit Honda TRX420 Rancher 2007-2025 10.0:1 Compression 8869D050
WOSSNER
$164.00Enhance your Honda TRX 420's performance with the WOSSNER Piston Kit, expertly designed for optimal efficiency and durability. This premium kit includes everything you need for a seamless upgrade, ensuring your engine runs smoother and quieter while...09106114- SKU:
- 09106114
- Availability:
- Ships Same Business Day
- Weight:
- 0.76 LBS
- BORE - OVERSIZE METRIC:
- +0.50 MM
- PRODUCT NAME:
- PISTON KIT
- BORE - OVERSIZE:
- +0,50 MM
- COMPRESSION RATIO IMPERIAL:
- 10.0:1
- PISTON SIZE METRIC:
- 86.95 MM
- UNITS:
- KIT
- BORE SIZE METRIC:
- 87.00 MM
- ENGINE TYPE:
- 4-STROKE
- MODEL:
- PRO SERIES
- PISTON MATERIAL:
- ALUMINUM ALLOY
- PISTON MATERIAL:
- FORGED
- RIDING STYLE:
- ATV
$164.00 -
ATHENA Piston Kit S4C06800001A
ATHENA
$134.95Includes rings, clips and pin, Easy-to-follow step-by-step installation instructions09101332- SKU:
- 09101332
- Availability:
- Ships Same Business Day
- Weight:
- 0.65 LBS
- PISTON DIAMETER METRIC:
- 67.95 MM
- PISTON SIZE METRIC:
- STANDARD SIZE A
- PRODUCT NAME:
- PISTON
- STYLE:
- CAST BIG BORE
- COMPRESSION RATIO IMPERIAL:
- 11.9:1
- ENGINE TYPE:
- 2-STROKE
- RIDING STYLE:
- ATV
- UNITS:
- EACH
$134.95 -
ATHENA Piston Kit S4C06800001B
ATHENA
$134.95Includes rings, clips and pin, Easy-to-follow step-by-step installation instructions09101333- SKU:
- 09101333
- Availability:
- Ships Same Business Day
- Weight:
- 0.65 LBS
- PISTON DIAMETER METRIC:
- 67.96 MM
- PRODUCT NAME:
- PISTON
- STYLE:
- CAST BIG BORE
- ENGINE TYPE:
- 2-STROKE
- PISTON SIZE METRIC:
- STANDARD SIZE B
- COMPRESSION RATIO IMPERIAL:
- 11.9:1
- RIDING STYLE:
- ATV
- UNITS:
- EACH
$134.95 -
VERTEX Piston Kit 23909A
VERTEX
$218.95All 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 life09103384- SKU:
- 09103384
- Availability:
- Ships Same Business Day
- Weight:
- 0.90 LBS
- COMPRESSION RATIO IMPERIAL:
- 11.5:1
- PISTON DIAMETER METRIC:
- 84.95 MM
- PRODUCT NAME:
- PISTON KIT
- CYLINDER DIAMETER METRIC:
- 85.00 MM
- ENGINE TYPE:
- 4-STROKE
- RIDING STYLE:
- ATV
- SKIRT COATING:
- MOLYBDENUM DISULPHITE
- STYLE:
- FORGED HIGH COMPRESSION
- UNITS:
- KIT
- DISPLACEMENT:
- 750 CC
- PISTON MATERIAL:
- FORGED 2618 ALUMINUM
- RIDING STYLE:
- UTV
$218.95 -
VERTEX Piston Kit 23909B
VERTEX
$218.95All 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 life09103385- SKU:
- 09103385
- Availability:
- Ships Same Business Day
- Weight:
- 0.90 LBS
- COMPRESSION RATIO IMPERIAL:
- 11.5:1
- PRODUCT NAME:
- PISTON KIT
- DISPLACEMENT:
- 750 CC
- PISTON MATERIAL:
- FORGED 2618 ALUMINUM
- RIDING STYLE:
- UTV
- CYLINDER DIAMETER METRIC:
- 85.00 MM
- PISTON DIAMETER METRIC:
- 84.96 MM
- SKIRT COATING:
- MOLYBDENUM DISULPHITE
- STYLE:
- FORGED HIGH COMPRESSION
- UNITS:
- KIT
- ENGINE TYPE:
- 4-STROKE
- RIDING STYLE:
- ATV
$218.95 -
VERTEX Piston Kit 23909C
VERTEX
$127.11All 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 life09103386- SKU:
- 09103386
- Availability:
- Ships Same Business Day
- Weight:
- 0.90 LBS
- COMPRESSION RATIO IMPERIAL:
- 11.5:1
- PRODUCT NAME:
- PISTON KIT
- CYLINDER DIAMETER METRIC:
- 85.00 MM
- ENGINE TYPE:
- 4-STROKE
- RIDING STYLE:
- ATV
- SKIRT COATING:
- MOLYBDENUM DISULPHITE
- STYLE:
- FORGED HIGH COMPRESSION
- UNITS:
- KIT
- DISPLACEMENT:
- 750 CC
- PISTON MATERIAL:
- FORGED 2618 ALUMINUM
- RIDING STYLE:
- UTV
- PISTON DIAMETER METRIC:
- 84.97 MM
$127.11
