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 +2.00 mm Yamaha Grizzly 700 2007-2010 4797M09700
WISECO
MSRP: $224.95Now: $191.00Was: $224.95If you're looking to extract more displacement and power from your Grizzly 700, a properly sized piston kit is essential. The Wiseco +2.00 mm piston kit is engineered to increase your engine's cubic...09100286- SKU:
- 09100286
- Availability:
- Ships Same Business Day
- Weight:
- 1.35 LBS
- BORE - OVERSIZE:
- +2,00 MM
- BORE SIZE METRIC:
- 97.00 MM
- PISTON MATERIAL:
- FORGED
- PRODUCT NAME:
- PISTON
- COMPRESSION RATIO IMPERIAL:
- STOCK
- PISTON MATERIAL:
- ALUMINUM ALLOY
- STROKE LENGTH METRIC:
- 84.00 MM
- UNITS:
- EACH
- DISPLACEMENT:
- 621 CC
- BORE - OVERSIZE METRIC:
- +2.00 MM
- ENGINE TYPE:
- 4-STROKE
- RIDING STYLE:
- ATV
MSRP: $224.95Now: $191.00Was: $224.95 -
JE PISTONS Piston Kit 247957
JE PISTONS
$325.99When you're pushing your engine to the limit in professional competition, your pistons need to withstand extreme pressures and temperatures without compromise. JE PISTONS' 247957 Kit is engineered...09105862- SKU:
- 09105862
- Availability:
- Ships Same Business Day
- Weight:
- 1.41 LBS
- PISTON HEAD SHAPE:
- DISHED
- WALL THICKNESS IMPERIAL:
- 0.160'
- COMPRESSION RATIO IMPERIAL:
- 12.5:1
- PRODUCT NAME:
- PISTON KIT
- RIDING STYLE:
- ATV
- WALL THICKNESS:
- 0,160'
- BORE SIZE METRIC:
- 95.00 MM
- DISPLACEMENT:
- 449 CC
- UNITS:
- KIT
$325.99 -
JE PISTONS Piston Kit 252742
JE PISTONS
$309.99When you're pushing your engine to the absolute limit, your pistons need to handle extreme pressures and temperatures without compromise. JE PISTONS Pro Series delivers the precision engineering and...09105863- SKU:
- 09105863
- Availability:
- Ships Same Business Day
- Weight:
- 1.41 LBS
- BORE SIZE METRIC:
- 95.50 MM
- PISTON HEAD SHAPE:
- DOMED
- UNITS:
- KIT
- WALL THICKNESS IMPERIAL:
- 0.160'
- DISPLACEMENT:
- 450 CC
- PRODUCT NAME:
- PISTON KIT
- RIDING STYLE:
- ATV
- WALL THICKNESS:
- 0,160'
- COMPRESSION RATIO IMPERIAL:
- 13.5:1
$309.99Qty in Cart: 0Quantity:Price:$309.99Subtotal: -
JE PISTONS Piston Kit 252743
JE PISTONS
$309.99If you're pushing your engine to the limit in competition or extreme performance applications, your stock pistons simply won't survive the punishment. JE PISTONS' Pro Series 252743 kit delivers the...09105864- SKU:
- 09105864
- Availability:
- Ships Same Business Day
- Weight:
- 1.41 LBS
- RIDING STYLE:
- ATV
- COMPRESSION RATIO IMPERIAL:
- 12.8:1
- PISTON HEAD SHAPE:
- DOMED
- UNITS:
- KIT
- BORE SIZE METRIC:
- 95.50 MM
- WALL THICKNESS:
- 0,160'
- WALL THICKNESS IMPERIAL:
- 0.160'
- DISPLACEMENT:
- 450 CC
- PRODUCT NAME:
- PISTON KIT
$309.99Qty in Cart: 0Quantity:Price:$309.99Subtotal: -
JE PISTONS Piston Kit 252744
JE PISTONS
$309.99When you're building an engine that needs to survive extreme competition and sustained high RPM, piston quality isn't negotiable. JE Pistons' 252744 kit is purpose-built for professional racing...09105865- SKU:
- 09105865
- Availability:
- Ships Same Business Day
- Weight:
- 1.16 LBS
- RIDING STYLE:
- ATV
- BORE SIZE METRIC:
- 98.00 MM
- DISPLACEMENT:
- 474 CC
- PRODUCT NAME:
- PISTON KIT
- WALL THICKNESS:
- 0,160'
- WALL THICKNESS IMPERIAL:
- 0.160'
- COMPRESSION RATIO IMPERIAL:
- 12.8:1
- UNITS:
- KIT
- PISTON HEAD SHAPE:
- DOMED
$309.99 -
On Sale
Wiseco Piston Kit Honda TRX400EX 1999-2008 85.5mm 11:1 4628M08550
WISECO
MSRP: $238.95Now: $191.00Was: $238.95If you're running a Honda TRX400EX and want measurable gains in throttle response and engine reliability, a quality piston kit is non-negotiable. Wiseco pistons are engineered to tighter tolerances...09102831- SKU:
- 09102831
- Availability:
- Ships Same Business Day
- Weight:
- 1.05 LBS
- BORE - OVERSIZE:
- +0,50 MM
- COMPRESSION RATIO IMPERIAL:
- 11.0:1
- DISPLACEMENT:
- 397 CC
- RIDING STYLE:
- OFF-ROAD
- STROKE LENGTH METRIC:
- 70.00 MM
- BORE - OVERSIZE METRIC:
- +0.50 MM
- BORE SIZE METRIC:
- 85.50 MM
- ENGINE TYPE:
- 4-STROKE
- PISTON MATERIAL:
- ALUMINUM ALLOY
- PISTON MATERIAL:
- FORGED
- PRODUCT NAME:
- PISTON
- RIDING STYLE:
- ATV
- UNITS:
- EACH
MSRP: $238.95Now: $191.00Was: $238.95Qty in Cart: 0Quantity:Price:MSRP: $238.95Now: $191.00Was: $238.95Subtotal: -
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...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...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: $169.95Qty in Cart: 0Quantity:Price:MSRP: $169.95Now: $144.00Was: $169.95Subtotal: -
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...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: $232.95 -
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...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: $163.08Qty in Cart: 0Quantity:Price:MSRP: $163.08Now: $144.00Was: $163.08Subtotal: -
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...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...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 -
On Sale
Wossner Piston Kit 8075D050
WOSSNER
MSRP: $122.00Now: $115.90Was: $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...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
MSRP: $122.00Now: $115.90Was: $122.00 -
On Sale
Wossner Piston Kit 64.94mm Yamaha YFZ350 Banshee 1987-2006 8075D100
WOSSNER
MSRP: $122.00Now: $115.90Was: $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...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
MSRP: $122.00Now: $115.90Was: $122.00Qty in Cart: 0Quantity:Price:MSRP: $122.00Now: $115.90Was: $122.00Subtotal: -
On Sale
Wossner Piston Kit Yamaha Banshee 1987-2006 8075D125
WOSSNER
MSRP: $132.00Now: $125.40Was: $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...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
MSRP: $132.00Now: $125.40Was: $132.00Qty in Cart: 0Quantity:Price:MSRP: $132.00Now: $125.40Was: $132.00Subtotal: -
On Sale
Wossner Piston Kit Yamaha YFZ450 2004-2025 12.4-13.0:1 CR 8601DA
WOSSNER
MSRP: $204.00Now: $193.80Was: $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...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
MSRP: $204.00Now: $193.80Was: $204.00Qty in Cart: 0Quantity:Price:MSRP: $204.00Now: $193.80Was: $204.00Subtotal: -
On Sale
Wossner Yamaha Raptor 700 2006-2014 Piston Kit 8673DA
WOSSNER
MSRP: $204.00Now: $193.80Was: $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...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
MSRP: $204.00Now: $193.80Was: $204.00Qty in Cart: 0Quantity:Price:MSRP: $204.00Now: $193.80Was: $204.00Subtotal: -
On Sale
Wossner Piston Kit Polaris RZR 570 2012-2021 8951D050
WOSSNER
MSRP: $194.00Now: $184.30Was: $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...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
MSRP: $194.00Now: $184.30Was: $194.00Qty in Cart: 0Quantity:Price:MSRP: $194.00Now: $184.30Was: $194.00Subtotal: -
On Sale
Wossner Piston Kit for Polaris RZR 900 2015-2020 K8930DA-2
WOSSNER
MSRP: $428.00Now: $406.60Was: $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...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
MSRP: $428.00Now: $406.60Was: $428.00 -
On Sale
Wossner Piston Kit Honda TRX420 Rancher 2007-2025 10.0:1 Compression 8869D050
WOSSNER
MSRP: $164.00Now: $155.80Was: $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...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
MSRP: $164.00Now: $155.80Was: $164.00
