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
-
On Sale
MILLENNIUM Piston Kit 13016
MILLENNIUM
MSRP: $269.95Now: $173.00Was: $269.95Precision engine performance starts with superior pistons, and the MILLENNIUM 13016 delivers the tight tolerances and lightweight construction that separate high-revving reliability from mediocre durability. Double-bridged forging technology reduces...09105025- SKU:
- 09105025
- Availability:
- Ships Same Business Day
- Weight:
- 1.25 LBS
- COMPRESSION RATIO IMPERIAL:
- 10.0:1
- PISTON MATERIAL:
- STEEL
- SKIRT COATING:
- MOLY COATED
- STYLE:
- BIG BORE
- BORE - OVERSIZE:
- +5,00 MM
- BORE - OVERSIZE METRIC:
- +5.00 MM
- RIDING STYLE:
- UTV
- RING MATERIAL:
- NITRIDE COATED
- BORE SIZE METRIC:
- 104.00 MM
- PRODUCT NAME:
- PISTON KIT
- RIDING STYLE:
- ATV
- UNITS:
- KIT
MSRP: $269.95Now: $173.00Was: $269.95 -
On Sale
MILLENNIUM Piston Kit K8897D500-2
MILLENNIUM
MSRP: $449.95Now: $288.00Was: $449.95Precision-engineered pistons are the foundation of any high-performance engine build. The MILLENNIUM K8897D500-2 delivers the tight tolerances and lightweight construction that serious builders demand, reducing friction losses and mechanical noise while...09105026- SKU:
- 09105026
- Availability:
- Ships Same Business Day
- Weight:
- 2.55 LBS
- BORE SIZE METRIC:
- 98 MM
- PRODUCT NAME:
- PISTON KIT
- SKIRT COATING:
- MOLY COATED
- STYLE:
- BIG BORE
- BORE - OVERSIZE:
- +5,00 MM
- BORE - OVERSIZE METRIC:
- +5.00 MM
- PISTON MATERIAL:
- STEEL
- RIDING STYLE:
- UTV
- RING MATERIAL:
- NITRIDE COATED
- COMPRESSION RATIO IMPERIAL:
- 11.0:1
- UNITS:
- KIT
MSRP: $449.95Now: $288.00Was: $449.95 -
On Sale
MILLENNIUM Piston Kit K8877D500-2
MILLENNIUM
MSRP: $449.95Now: $288.00Was: $449.95Precision engine performance demands pistons engineered to exacting tolerances. The MILLENNIUM Piston Kit K8877D500-2 delivers the tightest piston-wall clearances available, reducing friction, minimizing noise, and maximizing combustion efficiency. Built...09105027- SKU:
- 09105027
- Availability:
- Ships Same Business Day
- Weight:
- 2.15 LBS
- BORE SIZE METRIC:
- 85.00 MM
- PRODUCT NAME:
- PISTON KIT
- RING MATERIAL:
- NITRIDE COATED
- SKIRT COATING:
- MOLY COATED
- STYLE:
- BIG BORE
- BORE - OVERSIZE:
- +5,00 MM
- BORE - OVERSIZE METRIC:
- +5.00 MM
- COMPRESSION RATIO IMPERIAL:
- 10.75:1
- PISTON MATERIAL:
- STEEL
- RIDING STYLE:
- UTV
- RIDING STYLE:
- ATV
- UNITS:
- KIT
MSRP: $449.95Now: $288.00Was: $449.95 -
JE PISTONS Piston Kit 252746
JE PISTONS
$309.99When you're pushing your engine to the absolute limit, your pistons are the components bearing the brunt of extreme combustion pressures and temperatures. JE PISTONS' 252746 kit delivers the precision engineering and durability required for professional...09105866- SKU:
- 09105866
- Availability:
- Ships Same Business Day
- Weight:
- 1.41 LBS
- RIDING STYLE:
- ATV
- UNITS:
- KIT
- COMPRESSION RATIO IMPERIAL:
- 13.9:1
- PISTON HEAD SHAPE:
- DOMED
- DISPLACEMENT:
- 474 CC
- WALL THICKNESS IMPERIAL:
- 0.160'
- BORE SIZE METRIC:
- 98.00 MM
- PRODUCT NAME:
- PISTON KIT
- WALL THICKNESS:
- 0,160'
$309.99Qty in Cart: 0Quantity:Price:$309.99Subtotal: -
On Sale
JE PISTONS Piston Kit 261527
JE PISTONS
MSRP: $301.05Now: $211.00Was: $301.05When you're pushing your engine to the absolute limit, your pistons need to handle sustained high RPM, extreme combustion pressures, and thermal stress that would destroy lesser components. JE Pistons 261527 Pro Series pistons are engineered specifically...09105867- SKU:
- 09105867
- Availability:
- Ships Same Business Day
- Weight:
- 1.46 LBS
- RIDING STYLE:
- ATV
- DISPLACEMENT:
- 686 CC
- WALL THICKNESS:
- 0,150'
- WALL THICKNESS IMPERIAL:
- 0.150'
- PISTON HEAD SHAPE:
- DOMED
- UNITS:
- KIT
- BORE SIZE METRIC:
- 102.00 MM
- COMPRESSION RATIO IMPERIAL:
- 10.0:1
- PRODUCT NAME:
- PISTON KIT
MSRP: $301.05Now: $211.00Was: $301.05 -
JE PISTONS Piston Kit 261528
JE PISTONS
$329.99When you're building an engine for professional competition or extreme high-RPM applications, piston quality separates reliable powerplants from catastrophic failures. JE Pistons' 261528 kit delivers the precision engineering and material science...09105868- SKU:
- 09105868
- Availability:
- Ships Same Business Day
- Weight:
- 1.36 LBS
- WALL THICKNESS:
- 0,150'
- COMPRESSION RATIO IMPERIAL:
- 11.0:1
- DISPLACEMENT:
- 686 CC
- BORE SIZE METRIC:
- 102.00 MM
- PRODUCT NAME:
- PISTON KIT
- RIDING STYLE:
- ATV
- PISTON HEAD SHAPE:
- DOMED
- UNITS:
- KIT
- WALL THICKNESS IMPERIAL:
- 0.150'
$329.99 -
JE PISTONS Piston Kit 261546
JE PISTONS
$329.99When you're pushing your engine to the absolute limit in professional competition, your pistons need to withstand extreme pressures and temperatures without compromise. JE PISTONS' Pro Series 261546 kit is engineered specifically for forced induction and...09105869- SKU:
- 09105869
- Availability:
- Ships Same Business Day
- Weight:
- 1.41 LBS
- DISPLACEMENT:
- 449 CC
- PRODUCT NAME:
- PISTON KIT
- PISTON HEAD SHAPE:
- DOMED
- RIDING STYLE:
- ATV
- BORE SIZE METRIC:
- 94.00 MM
- WALL THICKNESS:
- 0,150'
- WALL THICKNESS IMPERIAL:
- 0.150'
- COMPRESSION RATIO IMPERIAL:
- 12.5:1
- UNITS:
- KIT
$329.99 -
JE PISTONS Piston Kit 261547
JE PISTONS
$329.99If you're running a high-output engine in competition or extreme duty applications, your stock pistons won't cut it. JE PISTONS' Pro Series 261547 kit delivers the strength and precision you need to handle forced induction, high boost, and sustained RPM...09105870- SKU:
- 09105870
- Availability:
- Ships Same Business Day
- Weight:
- 1.41 LBS
- PISTON HEAD SHAPE:
- DOMED
- WALL THICKNESS IMPERIAL:
- 0.150'
- PRODUCT NAME:
- PISTON KIT
- RIDING STYLE:
- ATV
- DISPLACEMENT:
- 449 CC
- UNITS:
- KIT
- BORE SIZE METRIC:
- 94.00 MM
- COMPRESSION RATIO IMPERIAL:
- 13.8:1
- WALL THICKNESS:
- 0,150'
$329.99 -
JE PISTONS Piston Kit 300112
JE PISTONS
$329.99If you're building an engine for competition or extreme duty applications, piston quality directly impacts reliability under peak combustion pressures and thermal stress. JE Pistons' 300112 kit delivers purpose-built strength and precision through...09105909- SKU:
- 09105909
- Availability:
- Ships Same Business Day
- Weight:
- 1.11 LBS
- COMPRESSION RATIO IMPERIAL:
- 13.5:1
- DISPLACEMENT:
- 493 CC
- PRODUCT NAME:
- PISTON KIT
- WALL THICKNESS:
- 0,160'
- RIDING STYLE:
- ATV
- BORE SIZE METRIC:
- 100.00 MM
- PISTON HEAD SHAPE:
- DOMED
- UNITS:
- KIT
- WALL THICKNESS IMPERIAL:
- 0.160'
$329.99 -
JE PISTONS Piston Kit 300177
JE PISTONS
$329.99When you're pushing an engine to its limits in competition, your pistons need to handle extreme pressures and temperatures without compromise. JE Pistons' 300177 Kit delivers the precision engineering and material science required for professional-grade...09105911- SKU:
- 09105911
- Availability:
- Ships Same Business Day
- Weight:
- 1.31 LBS
- WALL THICKNESS:
- 0,150'
- UNITS:
- KIT
- BORE SIZE METRIC:
- 102.00 MM
- COMPRESSION RATIO IMPERIAL:
- 12.5:1
- PRODUCT NAME:
- PISTON KIT
- RIDING STYLE:
- ATV
- DISPLACEMENT:
- 686 CC
- PISTON HEAD SHAPE:
- DOMED
- WALL THICKNESS IMPERIAL:
- 0.150'
$329.99 -
Wossner Piston Kit for Polaris Trail Blazer 250 1990-2005 8094D050
WOSSNER
$122.00If you're running a Polaris Trail Blazer 250, your piston takes a beating—especially if you're pushing the engine hard or dealing with high ambient temperatures. The Wossner 8094D050 kit replaces worn pistons with a German-engineered component that...09105510- SKU:
- 09105510
- Availability:
- Ships Same Business Day
- Weight:
- 0.81 LBS
- BORE - OVERSIZE:
- +0,50 MM
- ENGINE TYPE:
- 2-STROKE
- RIDING STYLE:
- ATV
- UNITS:
- KIT
- PISTON MATERIAL:
- ALUMINUM ALLOY
- PISTON MATERIAL:
- FORGED
- PISTON SIZE METRIC:
- 72.43 MM
- BORE - OVERSIZE METRIC:
- +0.50 MM
- DISPLACEMENT:
- 244 CC
- BORE SIZE METRIC:
- 72.50 MM
- MODEL:
- STANDARD SERIES
- PRODUCT NAME:
- PISTON KIT
- TYPE:
- DUAL RING
$122.00 -
Wossner Piston Kit Polaris 300 2x4 1994-1995 8095DA
WOSSNER
$122.00A worn or damaged piston directly impacts engine efficiency, power delivery, and longevity—especially critical in 2-stroke applications where precision tolerances are unforgiving. The Wossner 8095DA is engineered to restore or exceed OEM performance,...09105515- SKU:
- 09105515
- Availability:
- Ships Same Business Day
- Weight:
- 0.86 LBS
- BORE - OVERSIZE:
- STANDARD
- PISTON MATERIAL:
- ALUMINUM ALLOY
- PISTON MATERIAL:
- FORGED
- RIDING STYLE:
- ATV
- ENGINE TYPE:
- 2-STROKE
- PISTON SIZE METRIC:
- 74.43 MM
- PRODUCT NAME:
- PISTON KIT
- TYPE:
- DUAL RING
- BORE - OVERSIZE METRIC:
- STANDARD
- BORE SIZE METRIC:
- 74.50 MM
- MODEL:
- STANDARD SERIES
- UNITS:
- KIT
- DISPLACEMENT:
- 283 CC
$122.00Qty in Cart: 0Quantity:Price:$122.00Subtotal: -
Wossner Piston Kit Yamaha YFZ350 Banshee 1987-2006 8075D150
WOSSNER
$132.00The Wossner 8075D150 piston kit is engineered to restore or upgrade your YFZ350 Banshee with OEM-quality reliability and measurable performance gains. Whether you're rebuilding after wear or preparing for sustained high-RPM operation, this complete kit...09104795- SKU:
- 09104795
- Availability:
- Ships Same Business Day
- Weight:
- 0.70 LBS
- BORE - OVERSIZE METRIC:
- +1.50 MM
- MODEL:
- STANDARD SERIES
- PRODUCT NAME:
- PISTON KIT
- RIDING STYLE:
- STREET
- BORE SIZE METRIC:
- 65.50 MM
- DISPLACEMENT:
- 347 CC
- PISTON SIZE METRIC:
- 65.44 MM
- TYPE:
- DUAL RING
- PISTON MATERIAL:
- FORGED
- UNITS:
- KIT
- BORE - OVERSIZE:
- +1,50 MM
- DISPLACEMENT:
- 398 CC
- ENGINE TYPE:
- 2-STROKE
- PISTON MATERIAL:
- ALUMINUM ALLOY
- RIDING STYLE:
- ATV
$132.00Qty in Cart: 0Quantity:Price:$132.00Subtotal: -
On Sale
Wiseco Piston Kit for Honda TRX250R 1986 69.50mm PK1083
WISECO
MSRP: $284.95Now: $242.00Was: $284.95When you're pushing a TRX250R to its limits, stock pistons become a liability. The Wiseco PK1083 kit delivers the thermal stability and durability required for sustained high-RPM performance, whether you're racing competitively or running aggressive...09030469- SKU:
- 09030469
- Availability:
- Ships Same Business Day
- Weight:
- 1.23 LBS
- BORE - OVERSIZE:
- +3,50 MM
- BORE - OVERSIZE METRIC:
- +3.50 MM
- DISPLACEMENT:
- 246 CC
- SKIRT COATING:
- NON-COATED
- UNITS:
- KIT
- BORE SIZE METRIC:
- 69.50 MM
- PISTON DIAMETER METRIC:
- 69.42 MM
- PRODUCT NAME:
- REBUILD KIT
- STROKE LENGTH METRIC:
- 72.00 MM
- ENGINE TYPE:
- 2-STROKE
- MODEL:
- PRO-LITE
- PISTON MATERIAL:
- 4032 ALUMINUM ALLOY
- RIDING STYLE:
- ATV
- TYPE:
- TOP END
MSRP: $284.95Now: $242.00Was: $284.95 -
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 capacity while maintaining the precision tolerances...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
$309.99When 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 from 2618-T6 forged aluminum—a high-tensile material...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
$309.99 -
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 durability required for professional competition 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 strength and precision engineering demanded by...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 applications where margin for error doesn't exist. These are...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 than OEM alternatives, delivering better ring seal,...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:
