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
-
WSM Piston Kit 50-222-07K
WSM
$72.41Quality and construction that meet or exceed OEM, Feature improved E-clip design, Kits contain piston, rings, pin and clips, Rings available separately09105212- SKU:
- 09105212
- Availability:
- Ships Same Business Day
- Weight:
- 0.70 LBS
- BORE - OVERSIZE METRIC:
- +1.00 MM
- BORE - OVERSIZE:
- +1,00 MM
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- PRODUCT NAME:
- PISTON KIT
- BORE SIZE METRIC:
- 66.00 MM
$72.41 -
WSM Piston Kit 50-222-09K
WSM
$68.96Quality and construction that meet or exceed OEM, Feature improved E-clip design, Kits contain piston, rings, pin and clips, Rings available separately09105213- SKU:
- 09105213
- Availability:
- Ships Same Business Day
- Weight:
- 0.65 LBS
- BORE SIZE METRIC:
- 66.50 MM
- UNITS:
- KIT
- BORE - OVERSIZE METRIC:
- +1.50 MM
- PRODUCT NAME:
- PISTON KIT
- BORE - OVERSIZE:
- +1,50 MM
- RIDING STYLE:
- OFF-ROAD
$68.96Qty in Cart: 0Quantity:Price:$68.96Subtotal: -
WSM Piston Kit 50-251K
WSM
$157.82Quality and construction that meet or exceed OEM, Feature improved E-clip design, Kits contain piston, rings, pin and clips, Rings available separately09105241- SKU:
- 09105241
- Availability:
- Ships Same Business Day
- Weight:
- 1.05 LBS
- PRODUCT NAME:
- PISTON KIT
- BORE - OVERSIZE METRIC:
- STANDARD
- BORE SIZE METRIC:
- 81.00 MM
- BORE - OVERSIZE:
- STANDARD
- RIDING STYLE:
- ATV
- UNITS:
- KIT
$157.82Qty in Cart: 0Quantity:Price:$157.82Subtotal: -
WSM Piston Kit 50-251-04K
WSM
$157.82Quality and construction that meet or exceed OEM, Feature improved E-clip design, Kits contain piston, rings, pin and clips, Rings available separately09105242- SKU:
- 09105242
- Availability:
- Ships Same Business Day
- Weight:
- 1.05 LBS
- BORE - OVERSIZE:
- +0,25 MM
- BORE - OVERSIZE METRIC:
- +0.25 MM
- PRODUCT NAME:
- PISTON KIT
- RIDING STYLE:
- ATV
- BORE SIZE METRIC:
- 81.25 MM
- UNITS:
- KIT
$157.82Qty in Cart: 0Quantity:Price:$157.82Subtotal: -
WSM Piston Kit 50-251-05K
WSM
$165.71Quality and construction that meet or exceed OEM, Feature improved E-clip design, Kits contain piston, rings, pin and clips, Rings available separately09105243- SKU:
- 09105243
- Availability:
- Ships Same Business Day
- Weight:
- 0.85 LBS
- BORE SIZE METRIC:
- 81.50 MM
- PRODUCT NAME:
- PISTON KIT
- RIDING STYLE:
- ATV
- BORE - OVERSIZE:
- +0,50 MM
- BORE - OVERSIZE METRIC:
- +0.50 MM
- UNITS:
- KIT
$165.71 -
WSM Piston Kit 50-320K
WSM
$135.90Quality and construction that meet or exceed OEM, Feature improved E-clip design, Kits contain piston, rings, pin and clips, Rings available separately09105249- SKU:
- 09105249
- Availability:
- Ships Same Business Day
- Weight:
- 1.26 LBS
- BORE - OVERSIZE:
- STANDARD
- UNITS:
- KIT
- BORE - OVERSIZE METRIC:
- STANDARD
- RIDING STYLE:
- UTV
- PISTON SIZE METRIC:
- STANDARD
- PRODUCT NAME:
- PISTON KIT
$135.90 -
WSM Piston Kit 50-605-04K
WSM
$70.98Quality and construction that meet or exceed OEM, Feature improved E-clip design, Kits contain piston, rings, pin and clips, Rings available separately09105252- SKU:
- 09105252
- Availability:
- Ships Same Business Day
- Weight:
- 1.05 LBS
- BORE SIZE METRIC:
- 86.25 MM
- RIDING STYLE:
- ATV
- UNITS:
- KIT
- BORE - OVERSIZE:
- +0,25 MM
- BORE - OVERSIZE METRIC:
- +0.25 MM
- PRODUCT NAME:
- PISTON KIT
$70.98Qty in Cart: 0Quantity:Price:$70.98Subtotal: -
WSM Piston Kit 50-541K
WSM
$96.62Quality and construction that meet or exceed OEM, Feature improved E-clip design, Kits contain piston, rings, pin and clips, Rings available separately09105254- SKU:
- 09105254
- Availability:
- Ships Same Business Day
- Weight:
- 1.00 LBS
- BORE SIZE METRIC:
- 83.00 MM
- UNITS:
- KIT
- BORE - OVERSIZE:
- STANDARD
- ENGINE TYPE:
- 4-STROKE
- RIDING STYLE:
- ATV
- BORE - OVERSIZE METRIC:
- STANDARD
- PRODUCT NAME:
- PISTON KIT
$96.62Qty in Cart: 0Quantity:Price:$96.62Subtotal: -
WSM Piston Kit - Honda 400 - Standard 50-220K
WSM
$108.50Quality and construction that meets or exceeds OEM, Feature improved E-clip design, Contain piston, rings, pin and clips, Additional rings available separately, Order one per cylinder, Skirts have a nonabrasive, expansion-retarding MOS2 coating to reduce...09103468- SKU:
- 09103468
- Availability:
- Ships Same Business Day
- Weight:
- 1.05 LBS
- BORE - OVERSIZE:
- STANDARD
- PISTON MATERIAL:
- ALUMINUM
- BORE - OVERSIZE METRIC:
- STANDARD
- MODEL:
- ORIGINAL
- RIDING STYLE:
- ATV
- UNITS:
- KIT
- BORE SIZE METRIC:
- 86.00 MM
- PRODUCT NAME:
- PISTON KIT
$108.50Qty in Cart: 0Quantity:Price:$108.50Subtotal: -
WSM Piston Kit - Yamaha 350 - +1 mm 50-540-07K
WSM
$96.69Quality and construction that meets or exceeds OEM, Feature improved E-clip design, Contain piston, rings, pin and clips, Additional rings available separately, Order one per cylinder, Skirts have a nonabrasive, expansion-retarding MOS2 coating to reduce...09103517- SKU:
- 09103517
- Availability:
- Ships Same Business Day
- Weight:
- 1.00 LBS
- PISTON MATERIAL:
- ALUMINUM
- BORE - OVERSIZE METRIC:
- +1.00 MM
- BORE SIZE METRIC:
- 84.00 MM
- MODEL:
- ORIGINAL
- RIDING STYLE:
- ATV
- UNITS:
- KIT
- BORE - OVERSIZE:
- +1,00 MM
- PRODUCT NAME:
- PISTON KIT
$96.69Qty in Cart: 0Quantity:Price:$96.69Subtotal: -
WSM Piston Kit - Polaris 300 - Standard 50-310PK
WSM
$92.76Quality and construction that meets or exceeds OEM, Feature improved E-clip design, Contain piston, rings, pin and clips, Additional rings available separately, Order one per cylinder, Skirts have a nonabrasive, expansion-retarding MOS2 coating to reduce...09103518- SKU:
- 09103518
- Availability:
- Ships Same Business Day
- Weight:
- 1.00 LBS
- BORE SIZE METRIC:
- 74.50 MM
- PRODUCT NAME:
- PISTON KIT
- BORE - OVERSIZE:
- STANDARD
- BORE - OVERSIZE METRIC:
- STANDARD
- MODEL:
- ORIGINAL
- RIDING STYLE:
- ATV
- UNITS:
- KIT
- PISTON MATERIAL:
- ALUMINUM
$92.76Qty in Cart: 0Quantity:Price:$92.76Subtotal: -
WSM Piston Kit - Honda 420 - +.50 mm 50-231-05K
WSM
$111.09Quality and construction that meets or exceeds OEM, Feature improved E-clip design, Contain piston, rings, pin and clips, Additional rings available separately, Order one per cylinder, Skirts have a nonabrasive, expansion-retarding MOS2 coating to reduce...09103525- SKU:
- 09103525
- Availability:
- Ships Same Business Day
- Weight:
- 1.01 LBS
- MODEL:
- ORIGINAL
- RIDING STYLE:
- ATV
- BORE - OVERSIZE METRIC:
- +0.50 MM
- BORE SIZE METRIC:
- 87.00 MM
- PISTON MATERIAL:
- ALUMINUM
- BORE - OVERSIZE:
- +0,50 MM
- PRODUCT NAME:
- PISTON KIT
- UNITS:
- KIT
$111.09Qty in Cart: 0Quantity:Price:$111.09Subtotal: -
WSM Piston Kit - Honda 420 - +.75 mm 50-231-06K
WSM
$105.80Quality and construction that meets or exceeds OEM, Feature improved E-clip design, Contain piston, rings, pin and clips, Additional rings available separately, Order one per cylinder, Skirts have a nonabrasive, expansion-retarding MOS2 coating to reduce...09103526- SKU:
- 09103526
- Availability:
- Ships Same Business Day
- Weight:
- 1.00 LBS
- MODEL:
- ORIGINAL
- RIDING STYLE:
- ATV
- BORE - OVERSIZE:
- +0,75 MM
- PISTON MATERIAL:
- ALUMINUM
- BORE - OVERSIZE METRIC:
- +0.75 MM
- BORE SIZE METRIC:
- 87.25 MM
- PRODUCT NAME:
- PISTON KIT
- UNITS:
- KIT
$105.80Qty in Cart: 0Quantity:Price:$105.80Subtotal: -
WSM Piston Kit - Yamaha 660 - Standard 50-544K
WSM
$114.38Quality and construction that meets or exceeds OEM, Feature improved E-clip design, Contain piston, rings, pin and clips, Additional rings available separately, Order one per cylinder, Skirts have a nonabrasive, expansion-retarding MOS2 coating to reduce...09103528- SKU:
- 09103528
- Availability:
- Ships Same Business Day
- Weight:
- 1.16 LBS
- BORE SIZE METRIC:
- 100.00 MM
- BORE - OVERSIZE:
- STANDARD
- BORE - OVERSIZE METRIC:
- STANDARD
- MODEL:
- ORIGINAL
- PRODUCT NAME:
- PISTON KIT
- RIDING STYLE:
- ATV
- UNITS:
- KIT
- RIDING STYLE:
- UTV
- PISTON MATERIAL:
- ALUMINUM
$114.38Qty in Cart: 0Quantity:Price:$114.38Subtotal: -
WSM Piston Kit - Yamaha 660 - +.50 mm 50-544-05K
WSM
$120.10Quality and construction that meets or exceeds OEM, Feature improved E-clip design, Contain piston, rings, pin and clips, Additional rings available separately, Order one per cylinder, Skirts have a nonabrasive, expansion-retarding MOS2 coating to reduce...09103529- SKU:
- 09103529
- Availability:
- Ships Same Business Day
- Weight:
- 1.36 LBS
- BORE SIZE METRIC:
- 100.50 MM
- PRODUCT NAME:
- PISTON KIT
- RIDING STYLE:
- UTV
- BORE - OVERSIZE:
- +0,50 MM
- MODEL:
- ORIGINAL
- RIDING STYLE:
- ATV
- UNITS:
- KIT
- BORE - OVERSIZE METRIC:
- +0.50 MM
- PISTON MATERIAL:
- ALUMINUM
$120.10 -
Wiseco Piston Kit 82mm 10.2:1 for Polaris RZR 800 2008-2014 4961M08200
WISECO
$184.95Enhance your RZR800's performance with the WISECO Piston Kit, engineered from high-silicon alloy for exceptional durability and reliability. This kit is designed for both trail and racing enthusiasts, ensuring optimal power and efficiency in every ride...09104184- SKU:
- 09104184
- Availability:
- Ships Same Business Day
- Weight:
- 0.95 LBS
- BORE - OVERSIZE METRIC:
- +2.00 MM
- DISPLACEMENT:
- 769 CC
- PISTON DIAMETER METRIC:
- 81.94 MM
- PISTON MATERIAL:
- 4032 ALUMINUM ALLOY
- UNITS:
- KIT
- BORE - OVERSIZE:
- +2,00 MM
- COMPRESSION RATIO IMPERIAL:
- 10.2:1
- ENGINE TYPE:
- 4-STROKE
- MODEL:
- FORGED SERIES
- RIDING STYLE:
- ATV
- STROKE LENGTH METRIC:
- 76.50 MM
- BORE SIZE METRIC:
- 82.00 MM
- RIDING STYLE:
- UTV
- PRODUCT NAME:
- PISTON KIT
- SKIRT COATING:
- ARMORGLIDE®
$184.95Qty in Cart: 0Quantity:Price:$184.95Subtotal: -
On Sale
Wiseco Piston Kit 67mm Bore 1985-1986 Honda ATC250R TRX250R PK1077
WISECO
MSRP: $259.95Now: $221.00Was: $259.95Upgrade your engine's performance with the WISECO Piston Kit CR/TRX250 PK1077. Crafted from high-silicone forged aluminum, these pistons provide exceptional strength and reduced thermal expansion, ensuring reliability at high temperatures. Each complete...09030341- SKU:
- 09030341
- Availability:
- Ships Same Business Day
- Weight:
- 1.15 LBS
- ENGINE TYPE:
- 2-STROKE
- PISTON MATERIAL:
- 4032 ALUMINUM ALLOY
- TYPE:
- TOP END
- MODEL:
- PRO-LITE
- STROKE LENGTH METRIC:
- 72.00 MM
- BORE - OVERSIZE METRIC:
- +1.00 MM
- BORE SIZE METRIC:
- 67.00 MM
- DISPLACEMENT:
- 246 CC
- RIDING STYLE:
- ATV
- SKIRT COATING:
- NON-COATED
- UNITS:
- KIT
- BORE - OVERSIZE:
- +1,00 MM
- PISTON DIAMETER METRIC:
- 66.92 MM
- PRODUCT NAME:
- REBUILD KIT
MSRP: $259.95Now: $221.00Was: $259.95Qty in Cart: 0Quantity:Price:MSRP: $259.95Now: $221.00Was: $259.95Subtotal: -
On Sale
Wiseco Piston Kit for Suzuki LT80 1987-2006 PK1099
WISECO
MSRP: $182.95Now: $144.00Was: $182.95Upgrade your engine's performance with the WISECO Piston Kit, specifically designed for Suzuki and Kawasaki LT80 models. Crafted from high-silicone forged material, these pistons offer exceptional strength and minimal thermal expansion, ensuring...09030343- SKU:
- 09030343
- Availability:
- Ships Same Business Day
- Weight:
- 0.80 LBS
- BORE SIZE METRIC:
- 50.00 MM
- TYPE:
- TOP END
- UNITS:
- KIT
- DISPLACEMENT:
- 82 CC
- PISTON MATERIAL:
- 4032 ALUMINUM ALLOY
- BORE - OVERSIZE:
- STANDARD
- BORE - OVERSIZE METRIC:
- STANDARD
- ENGINE TYPE:
- 2-STROKE
- MODEL:
- FORGED SERIES
- RIDING STYLE:
- ATV
- SKIRT COATING:
- NON-COATED
- STROKE LENGTH METRIC:
- 42.00 MM
- PISTON DIAMETER METRIC:
- 49.92 MM
- PRODUCT NAME:
- REBUILD KIT
MSRP: $182.95Now: $144.00Was: $182.95Qty in Cart: 0Quantity:Price:MSRP: $182.95Now: $144.00Was: $182.95Subtotal: -
On Sale
Wiseco Piston Kit Yamaha YFS200 Blaster 1988-2006 68.25mm 573M06825
WISECO
MSRP: $166.95Now: $132.00Was: $166.95The WISECO Piston Kit Blaster 573M06825 is engineered for high performance and durability, making it an ideal choice for enthusiasts seeking to enhance their engine's capabilities. This piston kit ensures optimal efficiency and power, tailored...09102802- SKU:
- 09102802
- Availability:
- Ships Same Business Day
- Weight:
- 0.70 LBS
- BORE SIZE METRIC:
- 68.25 MM
- MODEL:
- PRO-LITE
- BORE - OVERSIZE:
- +2,25 MM
- PISTON MATERIAL:
- ALUMINUM ALLOY
- PISTON MATERIAL:
- FORGED
- PRODUCT NAME:
- PISTON
- STROKE LENGTH METRIC:
- 57.00 MM
- UNITS:
- EACH
- BORE - OVERSIZE METRIC:
- +2.25 MM
- DISPLACEMENT:
- 209 CC
- ENGINE TYPE:
- 2-STROKE
- RIDING STYLE:
- ATV
MSRP: $166.95Now: $132.00Was: $166.95 -
On Sale
Wiseco Piston Kit 81.00mm for Honda FL400R Pilot 1989-1990 577M08100
WISECO
MSRP: $204.95Now: $174.00Was: $204.95Upgrade your ride with the WISECO Piston Kit, designed specifically for the Pilot FL400R. This high-performance piston kit enhances engine efficiency and power, ensuring a smoother and more responsive driving experience. Please note that this kit does...09102804- SKU:
- 09102804
- Availability:
- Ships Same Business Day
- Weight:
- 1.05 LBS
- BORE SIZE METRIC:
- 81.00 MM
- BORE - OVERSIZE:
- +1,00 MM
- RIDING STYLE:
- UTV
- BORE - OVERSIZE METRIC:
- +1.00 MM
- PRODUCT NAME:
- PISTON
- STROKE LENGTH METRIC:
- 79.00 MM
- UNITS:
- EACH
- DISPLACEMENT:
- 397 CC
- ENGINE TYPE:
- 2-STROKE
- PISTON MATERIAL:
- ALUMINUM
MSRP: $204.95Now: $174.00Was: $204.95Qty in Cart: 0Quantity:Price:MSRP: $204.95Now: $174.00Was: $204.95Subtotal:
