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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- Qty in Cart
- Quantity
- Price
- Subtotal
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On Sale
Wossner Piston Kit 79.95mm Yamaha YXZ1000R 2016-2023 K4048DA-3
WOSSNER
MSRP: $736.00Now: $699.20Was: $736.00The Wossner K4048DA-3 Piston Kit delivers the precision engineering required to maximize power output and engine longevity in your Yamaha YXZ1000R. Whether you're pushing limits on the track or...09106647- SKU:
- 09106647
- Availability:
- Ships Same Business Day
- Weight:
- 2.70 LBS
MSRP: $736.00Now: $699.20Was: $736.00 -
On Sale
Wossner Piston Kit 79.95mm Yamaha YXZ1000R 2016-2025 K8978DA-3
WOSSNER
MSRP: $776.00Now: $737.20Was: $776.00If you're pushing your YXZ1000R to its limits, your factory pistons are holding you back. The Wossner K8978DA-3 kit delivers measurable gains in responsiveness, reliability, and engine longevity...09106648- SKU:
- 09106648
- Availability:
- Ships Same Business Day
- Weight:
- 0.01 LBS
MSRP: $776.00Now: $737.20Was: $776.00 -
PROX Piston Kit - 92.94 mm - Yamaha Wolverine RMAX2/RMAX4 01.2921.A
PROX
$177.95Engine rebuilds demand precision—and settling for inferior pistons compromises reliability and performance. The PROX Piston Kit delivers OEM-grade quality with CNC-machined accuracy, ensuring proper...09106785- SKU:
- 09106785
- Availability:
- Ships Same Business Day
- Weight:
- 0.60 LBS
$177.95 -
PROX Piston Kit - 79.95 mm - Polaris 01.5806.A
PROX
$138.95A worn or damaged piston directly undermines engine performance, compression, and reliability—making a quality replacement essential for any serious rebuild or repair. The PROX Piston Kit delivers...09106789- SKU:
- 09106789
- Availability:
- Ships Same Business Day
- Weight:
- 0.50 LBS
$138.95 -
PROX Piston Kit - 92.95 mm - Polaris 01.5913.A
PROX
$143.95A precision piston kit is essential for maintaining peak engine performance and reliability in your Polaris build. This PROX kit delivers OEM-quality construction with CNC-machined components,...09106790- SKU:
- 09106790
- Availability:
- Ships Same Business Day
- Weight:
- 0.70 LBS
$143.95 -
PROX Piston Kit - 92.91 mm - Polaris RZR XP Turbo 01.5920.A
PROX
$210.95Your RZR XP Turbo's engine demands precision components that can handle the demands of high-output performance. This PROX Piston Kit delivers OEM-grade quality with CNC-precision manufacturing,...09106791- SKU:
- 09106791
- Availability:
- Ships Same Business Day
- Weight:
- 0.90 LBS
$210.95Qty in Cart: 0Quantity:Price:$210.95Subtotal: -
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...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...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,...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: $449.95Qty in Cart: 0Quantity:Price:MSRP: $449.95Now: $288.00Was: $449.95Subtotal: -
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...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: $193.00Was: $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...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: $193.00Was: $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...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...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...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...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...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 -
On Sale
Wossner Piston Kit for Polaris Trail Blazer 250 1990-2005 8094D050
WOSSNER
MSRP: $122.00Now: $115.90Was: $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...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
MSRP: $122.00Now: $115.90Was: $122.00Qty in Cart: 0Quantity:Price:MSRP: $122.00Now: $115.90Was: $122.00Subtotal: -
On Sale
Wossner Piston Kit Polaris 300 2x4 1994-1995 8095DA
WOSSNER
MSRP: $122.00Now: $115.90Was: $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...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
MSRP: $122.00Now: $115.90Was: $122.00Qty in Cart: 0Quantity:Price:MSRP: $122.00Now: $115.90Was: $122.00Subtotal: -
On Sale
Wossner Piston Kit Yamaha YFZ350 Banshee 1987-2006 8075D150
WOSSNER
MSRP: $132.00Now: $125.40Was: $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...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
MSRP: $132.00Now: $125.40Was: $132.00Qty in Cart: 0Quantity:Price:MSRP: $132.00Now: $125.40Was: $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...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
