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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On Sale
Wiseco Piston Kit 96mm 12:1 Compression Honda TRX450R 2006-2009 4899M09600
WISECO
MSRP: $243.95Now: $183.00Was: $243.95The Wiseco Piston Kit 96mm 12:1 is engineered for TRX450R/ER riders who demand reliable power delivery and durability in high-stress trail and competition conditions. A quality piston upgrade directly impacts engine efficiency, throttle response, and...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
MSRP: $243.95Now: $183.00Was: $243.95 -
On Sale
Wiseco Piston Kit for 2009-2015 Polaris RZR 170 40143M06200
WISECO
MSRP: $169.95Now: $144.00Was: $169.95Stock pistons in your RZR 170 limit performance and reliability under aggressive trail and racing conditions. The Wiseco Piston Kit delivers the strength and precision engineering needed to safely push your engine harder while maintaining longevity. This...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
MSRP: $169.95Now: $144.00Was: $169.95 -
On Sale
Wiseco Piston Kit Yamaha YFM700R Raptor 2015-2021 40119M10200
WISECO
MSRP: $232.95Now: $191.00Was: $232.95Stock pistons limit your Raptor's potential—Wiseco's precision-engineered design unlocks higher compression efficiency and throttle response for both track days and trail riding. This kit delivers the durability and performance consistency that serious...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
MSRP: $232.95Now: $191.00Was: $232.95Qty in Cart: 0Quantity:Price:MSRP: $232.95Now: $191.00Was: $232.95Subtotal: -
On Sale
Wiseco Piston Kit for 2007-2014 Polaris Outlaw 90 49mm 10.5:1 40122M04900
WISECO
MSRP: $163.08Now: $144.00Was: $163.08A worn or damaged piston directly limits your Outlaw 90's power delivery and engine reliability. The Wiseco Piston Kit restores full combustion efficiency and durability with precision-engineered components built to withstand both trail riding and...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
MSRP: $163.08Now: $144.00Was: $163.08 -
On Sale
Wiseco Piston Kit Yamaha YFM350 Grizzly 2007-2012 40123M08350
WISECO
MSRP: $224.95Now: $191.00Was: $224.95If you're running a Yamaha YFM350 Grizzly and want measurable gains in power delivery and engine longevity, a quality piston kit is one of the smartest upgrades you can make. The Wiseco Piston Kit delivers precision-engineered internals that improve...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
MSRP: $224.95Now: $191.00Was: $224.95 -
On Sale
Wiseco Yamaha YFM660R 2001-2005 Piston Kit 4737M10000
WISECO
MSRP: $249.95Now: $212.00Was: $249.95A worn or damaged piston directly impacts your YFM660R's power delivery, fuel efficiency, and engine longevity. The Wiseco 4737M10000 restores your quad to factory performance specs using a high-silicon alloy that handles the demands of both competitive...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
MSRP: $249.95Now: $212.00Was: $249.95 -
Wossner Piston Kit 8075D050
WOSSNER
$122.00When your 2-stroke engine demands precision and reliability, the Wossner Piston Kit 8075D050 delivers the durability and efficiency that separates competitive builds from the rest. This comprehensive kit handles the extreme pressures of high-performance...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
$122.00Qty in Cart: 0Quantity:Price:$122.00Subtotal: -
Wossner Piston Kit 64.94mm Yamaha YFZ350 Banshee 1987-2006 8075D100
WOSSNER
$122.00When you're running a 2-stroke engine at its limits, piston quality directly determines reliability and longevity. The Wossner 8075D100 kit delivers the precision engineering and material science needed to handle sustained high-RPM operation without...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
$132.00The Wossner Piston Kit 8075D125 is engineered for Yamaha Banshee riders who demand reliability during high-RPM operation. Factory pistons wear quickly under racing conditions—this forged aluminum kit restores lost compression, power delivery, and engine...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
$132.00Qty in Cart: 0Quantity:Price:$132.00Subtotal: -
Wossner Piston Kit Yamaha YFZ450 2004-2025 12.4-13.0:1 CR 8601DA
WOSSNER
$204.00Stock pistons can't handle the demands of high-performance riding—they'll fail under sustained load, excessive heat, and aggressive tuning. The Wossner 8601DA replaces your factory piston with a precision-engineered component that delivers measurably...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
$204.00Qty in Cart: 0Quantity:Price:$204.00Subtotal: -
Wossner Yamaha Raptor 700 2006-2014 Piston Kit 8673DA
WOSSNER
$204.00Factory pistons wear out fast in high-performance 2-stroke applications, causing compression loss, increased blowby, and sluggish throttle response. The Wössner 8673DA replaces worn internals with a complete kit engineered for sustained power delivery...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
$194.00When your Polaris RZR 570 demands reliability under extreme conditions, a quality piston kit separates consistent performance from catastrophic failure. The Wossner 8951D050 delivers German engineering precision with materials and heat treatment designed...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
$194.00Qty in Cart: 0Quantity:Price:$194.00Subtotal: -
Wossner Piston Kit for Polaris RZR 900 2015-2020 K8930DA-2
WOSSNER
$428.00When you're pushing your RZR 900 to the limit, stock pistons become your weakest link. The Wossner K8930DA-2 is engineered to handle sustained high-load conditions with the precision and durability that separates reliable performance from catastrophic...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
$164.00A worn or damaged piston directly compromises engine efficiency, power delivery, and reliability—especially in high-demand riding conditions. The Wossner Piston Kit delivers OEM-quality replacement engineered to restore your TRX420's performance 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 -
On Sale
ATHENA Piston Kit S4C06800001A
ATHENA
MSRP: $134.95Now: $121.00Was: $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
MSRP: $134.95Now: $121.00Was: $134.95 -
On Sale
ATHENA Piston Kit S4C06800001B
ATHENA
MSRP: $134.95Now: $121.00Was: $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
MSRP: $134.95Now: $121.00Was: $134.95Qty in Cart: 0Quantity:Price:MSRP: $134.95Now: $121.00Was: $134.95Subtotal: -
VERTEX Piston Kit 23909A
VERTEX
$235.95Precision-engineered pistons are the foundation of reliable, high-revving performance—and the VERTEX 23909A kit delivers the durability and break-in characteristics serious builders demand. With proprietary heat-treatment and a slick Molybdenum...09103384- 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
$235.95 -
VERTEX Piston Kit 23909B
VERTEX
$235.95Precise piston fitment and durability are non-negotiable in high-performance racing. The VERTEX Piston Kit 23909B delivers the metallurgical refinement and surface engineering your engine demands for consistent power delivery and extended component life...09103385- 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
$235.95 -
VERTEX Piston Kit 23909C
VERTEX
$127.11The VERTEX Piston Kit 23909C delivers the durability and precision required for sustained high-RPM performance and reliable break-in cycles. Built with advanced heat-treatment and a specialized skirt coating, these pistons minimize friction during...09103386- 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 -
VERTEX Piston Kit 23532A
VERTEX
$315.95A quality piston kit is the foundation of reliable engine performance, and the VERTEX Piston Kit 23532A delivers the durability and precision needed for sustained high-RPM operation. The advanced heat-treatment process and specialized skirt coating...09101840- SKU:
- 09101840
- Availability:
- Ships Same Business Day
- Weight:
- 0.94 LBS
$315.95
