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
Wossner Piston Kit for Polaris Trail Boss 250 1988-1993 8094D150
WOSSNER
MSRP: $132.00Now: $125.40Was: $132.00When you're pushing your Trail Boss 250 to the limit, stock pistons become your weakest link—thermal stress and detonation will compromise reliability and power. The Wossner 8094D150 kit delivers...09105512- SKU:
- 09105512
- Availability:
- Ships Same Business Day
- Weight:
- 0.86 LBS
- BORE - OVERSIZE:
- +1,50 MM
- BORE SIZE METRIC:
- 73.50 MM
- PISTON MATERIAL:
- ALUMINUM ALLOY
- RIDING STYLE:
- ATV
- PISTON MATERIAL:
- FORGED
- UNITS:
- KIT
- DISPLACEMENT:
- 244 CC
- ENGINE TYPE:
- 2-STROKE
- TYPE:
- DUAL RING
- BORE - OVERSIZE METRIC:
- +1.50 MM
- MODEL:
- STANDARD SERIES
- PISTON SIZE METRIC:
- 73.43 MM
- PRODUCT NAME:
- PISTON KIT
MSRP: $132.00Now: $125.40Was: $132.00Qty in Cart: 0Quantity:Price:MSRP: $132.00Now: $125.40Was: $132.00Subtotal: -
On Sale
Wossner Piston Kit for Polaris RZR XP 1000 2014 97.94mm K8930D500-2
WOSSNER
MSRP: $448.00Now: $425.60Was: $448.00When your Polaris RZR XP 1000's engine is running on OEM pistons, you're leaving performance and reliability on the table. The Wossner K8930D500-2 piston kit restores lost compression, reduces...09105602- SKU:
- 09105602
- Availability:
- Ships Same Business Day
- Weight:
- 1.26 LBS
- UNITS:
- KIT
- BORE - OVERSIZE:
- +5,00 MM
- BORE - OVERSIZE METRIC:
- +5.00 MM
- PISTON SIZE METRIC:
- 97.94 MM
- RIDING STYLE:
- UTV
- BORE SIZE METRIC:
- 98.00 MM
- ENGINE TYPE:
- 4-STROKE
- MODEL:
- PRO SERIES
- PISTON MATERIAL:
- ALUMINUM ALLOY
- PRODUCT NAME:
- PISTON KIT
- COMPRESSION RATIO IMPERIAL:
- 12.0:1
- PISTON MATERIAL:
- FORGED
MSRP: $448.00Now: $425.60Was: $448.00Qty in Cart: 0Quantity:Price:MSRP: $448.00Now: $425.60Was: $448.00Subtotal: -
On Sale
Wossner Piston Kit Yamaha Raptor 700 2006-2014 103.94mm 8673D200
WOSSNER
MSRP: $214.00Now: $190.08Was: $214.00Stock pistons hit their limit under sustained high-RPM conditions, leading to ring flutter, increased blowby, and accelerated wear. The Wossner 8673D200 delivers the precision-engineered internals...09105603- SKU:
- 09105603
- Availability:
- Ships Same Business Day
- Weight:
- 1.36 LBS
- PISTON SIZE METRIC:
- 103.94 MM
- PRODUCT NAME:
- PISTON KIT
- BORE - OVERSIZE METRIC:
- +2.00 MM
- PISTON MATERIAL:
- FORGED
- UNITS:
- KIT
- BORE - OVERSIZE:
- +2,00 MM
- BORE SIZE METRIC:
- 104.00 MM
- COMPRESSION RATIO IMPERIAL:
- 11.0:1
- ENGINE TYPE:
- 4-STROKE
- MODEL:
- PRO SERIES
- PISTON MATERIAL:
- ALUMINUM ALLOY
- RIDING STYLE:
- ATV
MSRP: $214.00Now: $190.08Was: $214.00 -
On Sale
Wossner Piston Kit Polaris Xplorer 500 1997-2014 8691D050
WOSSNER
MSRP: $194.00Now: $184.30Was: $194.00Stock pistons in your Polaris Xplorer 500 are compromised the moment you push the engine beyond factory limits—thermal stress, friction, and premature wear become inevitable. The Wossner Piston Kit...09106110- SKU:
- 09106110
- Availability:
- Ships Same Business Day
- Weight:
- 1.25 LBS
- BORE - OVERSIZE:
- +0,50 MM
- BORE - OVERSIZE METRIC:
- +0.50 MM
- BORE SIZE METRIC:
- 92.50 MM
- PISTON SIZE METRIC:
- 92.45 MM
- UNITS:
- KIT
- COMPRESSION RATIO IMPERIAL:
- 10.3:1
- ENGINE TYPE:
- 4-STROKE
- PISTON MATERIAL:
- ALUMINUM ALLOY
- PRODUCT NAME:
- PISTON KIT
- RIDING STYLE:
- ATV
- MODEL:
- STANDARD SERIES
- RIDING STYLE:
- UTV
- 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 75mm Polaris 300 4x4 2x4 1994-1995 8095D050
WOSSNER
MSRP: $122.00Now: $115.90Was: $122.00Stock pistons can't handle the demands of high-performance 2-stroke applications—especially in a 300cc four-stroke platform that sees sustained high RPM and load cycling. The Wossner 8095D050 piston...09105516- SKU:
- 09105516
- Availability:
- Ships Same Business Day
- Weight:
- 0.86 LBS
- PISTON MATERIAL:
- FORGED
- TYPE:
- DUAL RING
- MODEL:
- STANDARD SERIES
- DISPLACEMENT:
- 283 CC
- ENGINE TYPE:
- 2-STROKE
- PISTON MATERIAL:
- ALUMINUM ALLOY
- PRODUCT NAME:
- PISTON KIT
- RIDING STYLE:
- ATV
- BORE - OVERSIZE:
- +0,50 MM
- BORE - OVERSIZE METRIC:
- +0.50 MM
- BORE SIZE METRIC:
- 75.00 MM
- PISTON SIZE METRIC:
- 74.93 MM
- 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 75.43mm Polaris 300 1994-1995 8095D100
WOSSNER
MSRP: $122.00Now: $115.90Was: $122.00If you're rebuilding a 1994-1995 Polaris 300 2-stroke, your engine's longevity and peak performance depend on choosing the right piston kit. The Wossner 8095D100 delivers the precision engineering...09105517- SKU:
- 09105517
- Availability:
- Ships Same Business Day
- Weight:
- 0.81 LBS
- PISTON MATERIAL:
- FORGED
- TYPE:
- DUAL RING
- ENGINE TYPE:
- 2-STROKE
- PISTON MATERIAL:
- ALUMINUM ALLOY
- PRODUCT NAME:
- PISTON KIT
- RIDING STYLE:
- ATV
- BORE - OVERSIZE:
- +1,00 MM
- MODEL:
- STANDARD SERIES
- PISTON SIZE METRIC:
- 75.43 MM
- BORE - OVERSIZE METRIC:
- +1.00 MM
- BORE SIZE METRIC:
- 75.50 MM
- DISPLACEMENT:
- 283 CC
- 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 83.43mm for Polaris 400L 1995 8097D050
WOSSNER
MSRP: $142.00Now: $134.90Was: $142.00Stock pistons in your Polaris 400L can't handle sustained high RPM loads without accelerated wear. This Wossner kit delivers OEM-quality replacement with measurable improvements in ring seal,...09105520- SKU:
- 09105520
- Availability:
- Ships Same Business Day
- Weight:
- 1.11 LBS
- DISPLACEMENT:
- 400 CC
- MODEL:
- STANDARD SERIES
- PRODUCT NAME:
- PISTON KIT
- TYPE:
- DUAL RING
- PISTON MATERIAL:
- ALUMINUM ALLOY
- PISTON MATERIAL:
- FORGED
- RIDING STYLE:
- ATV
- BORE - OVERSIZE METRIC:
- +0.50 MM
- PISTON SIZE METRIC:
- 83.43 MM
- BORE - OVERSIZE:
- +0,50 MM
- BORE SIZE METRIC:
- 83.50 MM
- ENGINE TYPE:
- 2-STROKE
- UNITS:
- KIT
MSRP: $142.00Now: $134.90Was: $142.00Qty in Cart: 0Quantity:Price:MSRP: $142.00Now: $134.90Was: $142.00Subtotal: -
On Sale
Wossner Piston Kit 84.00mm 1995 Polaris 400L 2x4 8097D100
WOSSNER
MSRP: $142.00Now: $134.90Was: $142.00When you're pushing a 2-stroke engine to its limits, piston quality directly impacts reliability, throttle response, and longevity. The Wossner 8097D100 is engineered to handle the thermal stress and...09105521- SKU:
- 09105521
- Availability:
- Ships Same Business Day
- Weight:
- 1.06 LBS
- BORE - OVERSIZE:
- +1,00 MM
- BORE SIZE METRIC:
- 84.00 MM
- MODEL:
- STANDARD SERIES
- PRODUCT NAME:
- PISTON KIT
- TYPE:
- DUAL RING
- DISPLACEMENT:
- 400 CC
- PISTON SIZE METRIC:
- 83.93 MM
- BORE - OVERSIZE METRIC:
- +1.00 MM
- PISTON MATERIAL:
- ALUMINUM ALLOY
- PISTON MATERIAL:
- FORGED
- ENGINE TYPE:
- 2-STROKE
- RIDING STYLE:
- ATV
- UNITS:
- KIT
MSRP: $142.00Now: $134.90Was: $142.00Qty in Cart: 0Quantity:Price:MSRP: $142.00Now: $134.90Was: $142.00Subtotal: -
On Sale
Wossner Piston Kit 83mm for Polaris 400L Xplorer 1994-2003 8097DA
WOSSNER
MSRP: $142.00Now: $134.90Was: $142.00If you're running a Polaris 400L Xplorer and want to restore lost compression or upgrade to a higher-displacement setup, a quality piston kit is non-negotiable. The Wossner 8097DA delivers the...09105524- SKU:
- 09105524
- Availability:
- Ships Same Business Day
- Weight:
- 1.06 LBS
- BORE - OVERSIZE METRIC:
- STANDARD
- MODEL:
- STANDARD SERIES
- PISTON SIZE METRIC:
- 82.93 MM
- UNITS:
- KIT
- BORE SIZE METRIC:
- 83.00 MM
- DISPLACEMENT:
- 400 CC
- ENGINE TYPE:
- 2-STROKE
- PRODUCT NAME:
- PISTON KIT
- TYPE:
- DUAL RING
- BORE - OVERSIZE:
- STANDARD
- PISTON MATERIAL:
- ALUMINUM ALLOY
- PISTON MATERIAL:
- FORGED
- RIDING STYLE:
- ATV
MSRP: $142.00Now: $134.90Was: $142.00Qty in Cart: 0Quantity:Price:MSRP: $142.00Now: $134.90Was: $142.00Subtotal: -
On Sale
Wossner Piston Kit Yamaha YFS200 Blaster 1988-2006 8101DA
WOSSNER
MSRP: $112.00Now: $106.40Was: $112.00If you're running a Yamaha YFS200 Blaster hard enough to wear out factory pistons, you need a replacement engineered for sustained high-RPM operation. The Wossner 8101DA kit delivers the durability...09105525- SKU:
- 09105525
- Availability:
- Ships Same Business Day
- Weight:
- 0.66 LBS
- DISPLACEMENT:
- 195 CC
- ENGINE TYPE:
- 2-STROKE
- PISTON SIZE METRIC:
- 65.94 MM
- PRODUCT NAME:
- PISTON KIT
- RIDING STYLE:
- ATV
- TYPE:
- DUAL RING
- MODEL:
- STANDARD SERIES
- UNITS:
- KIT
- BORE - OVERSIZE:
- STANDARD
- BORE - OVERSIZE METRIC:
- STANDARD
- BORE SIZE METRIC:
- 66.00 MM
- PISTON MATERIAL:
- ALUMINUM ALLOY
- PISTON MATERIAL:
- FORGED
MSRP: $112.00Now: $106.40Was: $112.00Qty in Cart: 0Quantity:Price:MSRP: $112.00Now: $106.40Was: $112.00Subtotal: -
On Sale
Wossner Piston Kit Yamaha YFS200 Blaster 1988-2006 8101D100
WOSSNER
MSRP: $112.00Now: $106.40Was: $112.00The Wossner Piston Kit 8101D100 is engineered to restore your Yamaha YFS200 Blaster's performance and reliability through precision-machined components and proven German engineering. If you're...09105528- SKU:
- 09105528
- Availability:
- Ships Same Business Day
- Weight:
- 0.66 LBS
- BORE - OVERSIZE METRIC:
- +1.00 MM
- BORE SIZE METRIC:
- 67.00 MM
- ENGINE TYPE:
- 2-STROKE
- UNITS:
- KIT
- DISPLACEMENT:
- 195 CC
- PISTON MATERIAL:
- ALUMINUM ALLOY
- PISTON MATERIAL:
- FORGED
- RIDING STYLE:
- ATV
- BORE - OVERSIZE:
- +1,00 MM
- MODEL:
- STANDARD SERIES
- PISTON SIZE METRIC:
- 66.94 MM
- PRODUCT NAME:
- PISTON KIT
- TYPE:
- DUAL RING
MSRP: $112.00Now: $106.40Was: $112.00Qty in Cart: 0Quantity:Price:MSRP: $112.00Now: $106.40Was: $112.00Subtotal: -
On Sale
Wossner Piston Kit 81.93mm for Polaris Sportsman 800 2005-2014 K8877D200-2
WOSSNER
MSRP: $321.95Now: $305.85Was: $321.95If you're running a Polaris Sportsman 800 hard, factory pistons won't cut it. The Wossner K8877D200-2 delivers the durability and precision needed for sustained high-RPM performance, with a...09105593- SKU:
- 09105593
- Availability:
- Ships Same Business Day
- Weight:
- 2.21 LBS
- PISTON SIZE METRIC:
- 81.93 MM
- RIDING STYLE:
- UTV
- BORE SIZE METRIC:
- 82.00 MM
- COMPRESSION RATIO IMPERIAL:
- 10.0:1
- MODEL:
- STANDARD SERIES
- UNITS:
- KIT
- BORE - OVERSIZE METRIC:
- +2.00 MM
- PRODUCT NAME:
- PISTON KIT
- BORE - OVERSIZE:
- +2,00 MM
- ENGINE TYPE:
- 4-STROKE
- PISTON MATERIAL:
- ALUMINUM ALLOY
- PISTON MATERIAL:
- FORGED
- RIDING STYLE:
- ATV
MSRP: $321.95Now: $305.85Was: $321.95Qty in Cart: 0Quantity:Price:MSRP: $321.95Now: $305.85Was: $321.95Subtotal: -
On Sale
Wossner Piston Kit 84.93mm Polaris Ranger RZR 800 2008-2013 K8877D500-2
WOSSNER
MSRP: $448.00Now: $305.85Was: $448.00If you're running a Polaris Ranger RZR 800, your engine's longevity and power delivery depend on reliable internal components. The Wossner Piston Kit K8877D500-2 delivers the precision engineering...09105595- SKU:
- 09105595
- Availability:
- Ships Same Business Day
- Weight:
- 2.16 LBS
- UNITS:
- KIT
- BORE SIZE METRIC:
- 85.00 MM
- ENGINE TYPE:
- 4-STROKE
- PISTON MATERIAL:
- ALUMINUM ALLOY
- PRODUCT NAME:
- PISTON KIT
- RIDING STYLE:
- ATV
- BORE - OVERSIZE:
- +5,00 MM
- BORE - OVERSIZE METRIC:
- +5.00 MM
- MODEL:
- STANDARD SERIES
- RIDING STYLE:
- UTV
- COMPRESSION RATIO IMPERIAL:
- 12.0:1
- PISTON MATERIAL:
- FORGED
- PISTON SIZE METRIC:
- 84.93 MM
MSRP: $448.00Now: $305.85Was: $448.00 -
On Sale
Wossner Piston Kit for Polaris 900 RZR XP 2011-2014 11.0:1 CR K8897DA-2
WOSSNER
MSRP: $428.00Now: $406.60Was: $428.00When you're pushing a Polaris 900 RZR XP to its limits, your piston kit needs to handle extreme combustion pressures and sustained high RPMs without compromise. The Wossner K8897DA-2 delivers the...09105596- SKU:
- 09105596
- Availability:
- Ships Same Business Day
- Weight:
- 2.41 LBS
- COMPRESSION RATIO IMPERIAL:
- 11.0:1
- MODEL:
- PRO SERIES
- UNITS:
- KIT
- RIDING STYLE:
- UTV
- BORE - OVERSIZE:
- STANDARD
- BORE - OVERSIZE METRIC:
- STANDARD
- BORE SIZE METRIC:
- 93.00 MM
- ENGINE TYPE:
- 4-STROKE
- PISTON MATERIAL:
- ALUMINUM ALLOY
- PISTON MATERIAL:
- FORGED
- PISTON SIZE METRIC:
- 92.95 MM
- PRODUCT NAME:
- PISTON KIT
MSRP: $428.00Now: $406.60Was: $428.00Qty in Cart: 0Quantity:Price:MSRP: $428.00Now: $406.60Was: $428.00Subtotal: -
On Sale
Wossner Piston Kit for Polaris RZR XP 900 2011-2014 95.95mm K8897D300-2
WOSSNER
MSRP: $448.00Now: $425.60Was: $448.00If you're running a high-revving 2-stroke RZR XP 900, piston durability directly impacts your engine's longevity and performance consistency. This Wossner kit delivers OEM-quality engineering with...09105598- SKU:
- 09105598
- Availability:
- Ships Same Business Day
- Weight:
- 2.51 LBS
- BORE - OVERSIZE:
- +3,00 MM
- COMPRESSION RATIO IMPERIAL:
- 11.0:1
- ENGINE TYPE:
- 4-STROKE
- MODEL:
- PRO SERIES
- PISTON MATERIAL:
- ALUMINUM ALLOY
- PISTON SIZE METRIC:
- 95.95 MM
- PISTON MATERIAL:
- FORGED
- UNITS:
- KIT
- BORE - OVERSIZE METRIC:
- +3.00 MM
- BORE SIZE METRIC:
- 96.00 MM
- PRODUCT NAME:
- PISTON KIT
- RIDING STYLE:
- UTV
MSRP: $448.00Now: $425.60Was: $448.00 -
On Sale
Wossner Piston Kit 95.94mm for 2014 Polaris RZR XP 1000 EPS LE K8930D300-2
WOSSNER
MSRP: $448.00Now: $368.55Was: $448.00When you're pushing your 2014 Polaris RZR XP 1000 EPS LE to its limits, a weak piston is the first thing that fails. The Wossner K8930D300-2 is engineered to handle sustained high RPM and load stress...09105601- SKU:
- 09105601
- Availability:
- Ships Same Business Day
- Weight:
- 2.41 LBS
- RIDING STYLE:
- UTV
- BORE - OVERSIZE METRIC:
- +3.00 MM
- BORE SIZE METRIC:
- 96.00 MM
- ENGINE TYPE:
- 4-STROKE
- MODEL:
- PRO SERIES
- PRODUCT NAME:
- PISTON KIT
- BORE - OVERSIZE:
- +3,00 MM
- UNITS:
- KIT
- COMPRESSION RATIO IMPERIAL:
- 12.0:1
- PISTON MATERIAL:
- ALUMINUM ALLOY
- PISTON MATERIAL:
- FORGED
- PISTON SIZE METRIC:
- 95.94 MM
MSRP: $448.00Now: $368.55Was: $448.00 -
WSM Piston Kit - Polaris - Standard 50-300PK
WSM
$91.26A quality piston kit is the foundation of reliable engine performance, and this WSM offering delivers OEM-grade construction with thermal enhancements that stock pistons simply don't have. The MOS2...50300- SKU:
- 50300
- Availability:
- Ships Same Business Day
- Weight:
- 1.13 LBS
- BORE - OVERSIZE METRIC:
- STANDARD
- PISTON MATERIAL:
- ALUMINUM
- UNITS:
- KIT
- PRODUCT NAME:
- PISTON KIT
- BORE - OVERSIZE:
- STANDARD
- MODEL:
- ORIGINAL
- BORE SIZE METRIC:
- 72.00 MM
- RIDING STYLE:
- ATV
$91.26Qty in Cart: 0Quantity:Price:$91.26Subtotal: -
WSM Piston Kit - Polaris - +.50 mm 50-300-05PK
WSM
$91.26Stock pistons don't cut it when you're pushing your Polaris engine toward higher output and sustained performance. The WSM Piston Kit delivers OEM-quality construction with purpose-built...5030005- SKU:
- 5030005
- Availability:
- Ships Same Business Day
- Weight:
- 1.13 LBS
- BORE - OVERSIZE:
- +0,50 MM
- BORE - OVERSIZE METRIC:
- +0.50 MM
- PISTON MATERIAL:
- ALUMINUM
- BORE SIZE METRIC:
- 72.50 MM
- MODEL:
- ORIGINAL
- PRODUCT NAME:
- PISTON KIT
- RIDING STYLE:
- ATV
- UNITS:
- KIT
$91.26 -
WSM Piston Kit - Polaris - +1 mm 50-300-07PK
WSM
$91.26When you're pushing your Polaris to the limit, factory pistons become your bottleneck. The WSM Piston Kit delivers OEM-grade construction with engineered improvements—a reinforced design that handles...5030007- SKU:
- 5030007
- Availability:
- Ships Same Business Day
- Weight:
- 0.90 LBS
- BORE SIZE METRIC:
- 73.00 MM
- MODEL:
- ORIGINAL
- RIDING STYLE:
- ATV
- BORE - OVERSIZE:
- +1,00 MM
- BORE - OVERSIZE METRIC:
- +1.00 MM
- PRODUCT NAME:
- PISTON KIT
- PISTON MATERIAL:
- ALUMINUM
- UNITS:
- KIT
$91.26 -
WSM Piston Kit - Polaris - Standard 50-305PK
WSM
$95.36Stock pistons can't handle the demands of high-performance riding—they overheat, wear prematurely, and rob you of power. WSM's piston kit delivers OEM-quality construction with advanced engineering...50305- SKU:
- 50305
- Availability:
- Ships Same Business Day
- Weight:
- 0.31 LBS
- BORE - OVERSIZE:
- STANDARD
- BORE - OVERSIZE METRIC:
- STANDARD
- MODEL:
- ORIGINAL
- PISTON MATERIAL:
- ALUMINUM
- PRODUCT NAME:
- PISTON KIT
- BORE SIZE METRIC:
- 83.00 MM
- RIDING STYLE:
- ATV
- UNITS:
- KIT
$95.36
