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 - Polaris - +.50 mm 50-305-05PK
WSM
$95.36Quality 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...5030505- SKU:
- 5030505
- Availability:
- Ships Same Business Day
- Weight:
- 1.06 LBS
- BORE - OVERSIZE METRIC:
- +0.50 MM
- BORE SIZE METRIC:
- 83.50 MM
- PRODUCT NAME:
- PISTON KIT
- UNITS:
- KIT
- MODEL:
- ORIGINAL
- RIDING STYLE:
- ATV
- BORE - OVERSIZE:
- +0,50 MM
- PISTON MATERIAL:
- ALUMINUM
$95.36 -
WSM Piston Kit - Polaris - +1 mm 50-305-07PK
WSM
$95.36Quality 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...5030507- SKU:
- 5030507
- Availability:
- Ships Same Business Day
- Weight:
- 1.06 LBS
- BORE - OVERSIZE:
- +1,00 MM
- BORE SIZE METRIC:
- 84.00 MM
- PISTON MATERIAL:
- ALUMINUM
- BORE - OVERSIZE METRIC:
- +1.00 MM
- MODEL:
- ORIGINAL
- PRODUCT NAME:
- PISTON KIT
- RIDING STYLE:
- ATV
- UNITS:
- KIT
$95.36 -
WSM Piston Kit - Yamaha - Standard 50-530PK
WSM
$90.05Quality 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...50530- SKU:
- 50530
- Availability:
- Ships Same Business Day
- Weight:
- 1.13 LBS
- BORE - OVERSIZE:
- STANDARD
- BORE SIZE METRIC:
- 66.00 MM
- MODEL:
- ORIGINAL
- PRODUCT NAME:
- PISTON KIT
- RIDING STYLE:
- ATV
- BORE - OVERSIZE METRIC:
- STANDARD
- PISTON MATERIAL:
- ALUMINUM
- UNITS:
- KIT
$90.05 -
WSM Piston Kit - Yamaha - +.50 mm 50-530-05PK
WSM
$90.05Quality 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...5053005- SKU:
- 5053005
- Availability:
- Ships Same Business Day
- Weight:
- 1.13 LBS
- BORE SIZE METRIC:
- 66.50 MM
- PRODUCT NAME:
- PISTON KIT
- BORE - OVERSIZE:
- +0,50 MM
- BORE - OVERSIZE METRIC:
- +0.50 MM
- RIDING STYLE:
- ATV
- UNITS:
- KIT
- MODEL:
- ORIGINAL
- PISTON MATERIAL:
- ALUMINUM
$90.05 -
WSM Piston Kit - Yamaha - +1 mm 50-530-07PK
WSM
$90.05Quality 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...5053007- SKU:
- 5053007
- Availability:
- Ships Same Business Day
- Weight:
- 0.70 LBS
- BORE - OVERSIZE:
- +1,00 MM
- PRODUCT NAME:
- PISTON KIT
- RIDING STYLE:
- ATV
- BORE - OVERSIZE METRIC:
- +1.00 MM
- BORE SIZE METRIC:
- 67.00 MM
- MODEL:
- ORIGINAL
- PISTON MATERIAL:
- ALUMINUM
- UNITS:
- KIT
$90.05 -
WSM Piston Kit - Yamaha - Standard 50-520PK
WSM
$93.81Quality 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...50520- SKU:
- 50520
- Availability:
- Ships Same Business Day
- Weight:
- 1.13 LBS
- PRODUCT NAME:
- PISTON KIT
- BORE - OVERSIZE:
- STANDARD
- BORE SIZE METRIC:
- 64.00 MM
- MODEL:
- ORIGINAL
- RIDING STYLE:
- ATV
- BORE - OVERSIZE METRIC:
- STANDARD
- PISTON MATERIAL:
- ALUMINUM
- UNITS:
- KIT
$93.81 -
WSM Piston Kit - Yamaha - +.50 mm 50-520-05PK
WSM
$93.81Quality 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...5052005- SKU:
- 5052005
- Availability:
- Ships Same Business Day
- Weight:
- 1.13 LBS
- BORE - OVERSIZE:
- +0,50 MM
- PISTON MATERIAL:
- ALUMINUM
- UNITS:
- KIT
- BORE SIZE METRIC:
- 64.50 MM
- MODEL:
- ORIGINAL
- BORE - OVERSIZE METRIC:
- +0.50 MM
- PRODUCT NAME:
- PISTON KIT
- RIDING STYLE:
- ATV
$93.81 -
WSM Piston Kit - Yamaha - +1 mm 50-520-07PK
WSM
$93.81Quality 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...5052007- SKU:
- 5052007
- Availability:
- Ships Same Business Day
- Weight:
- 1.13 LBS
- BORE SIZE METRIC:
- 65.00 MM
- RIDING STYLE:
- ATV
- UNITS:
- KIT
- BORE - OVERSIZE:
- +1,00 MM
- PRODUCT NAME:
- PISTON KIT
- BORE - OVERSIZE METRIC:
- +1.00 MM
- MODEL:
- ORIGINAL
- PISTON MATERIAL:
- ALUMINUM
$93.81 -
WSM Piston Kit 50-254K
WSM
$168.82Quality and construction that meet or exceed OEM, Feature improved E-clip design, Kits contain piston, rings, pin and clips, Rings available separately09105202- SKU:
- 09105202
- Availability:
- Ships Same Business Day
- Weight:
- 1.00 LBS
- BORE - OVERSIZE METRIC:
- STANDARD
- BORE SIZE METRIC:
- 90.00 MM
- UNITS:
- KIT
- BORE - OVERSIZE:
- STANDARD
- PRODUCT NAME:
- PISTON KIT
- RIDING STYLE:
- ATV
$168.82 -
WSM Piston Kit 50-254-04K
WSM
$168.82Quality and construction that meet or exceed OEM, Feature improved E-clip design, Kits contain piston, rings, pin and clips, Rings available separately09105203- SKU:
- 09105203
- Availability:
- Ships Same Business Day
- Weight:
- 0.90 LBS
- BORE SIZE METRIC:
- 90.25 MM
- RIDING STYLE:
- ATV
- BORE - OVERSIZE:
- +0,25 MM
- PRODUCT NAME:
- PISTON KIT
- BORE - OVERSIZE METRIC:
- +0.25 MM
- UNITS:
- KIT
$168.82 -
WSM Piston Kit 50-254-05K
WSM
$157.63Quality and construction that meet or exceed OEM, Feature improved E-clip design, Kits contain piston, rings, pin and clips, Rings available separately09105204- SKU:
- 09105204
- Availability:
- Ships Same Business Day
- Weight:
- 0.90 LBS
- PRODUCT NAME:
- PISTON KIT
- BORE - OVERSIZE METRIC:
- +0.50 MM
- BORE SIZE METRIC:
- 90.50 MM
- BORE - OVERSIZE:
- +0,50 MM
- UNITS:
- KIT
- RIDING STYLE:
- ATV
$157.63 -
WSM Piston Kit 50-222K
WSM
$74.43Quality and construction that meet or exceed OEM, Feature improved E-clip design, Kits contain piston, rings, pin and clips, Rings available separately09105208- SKU:
- 09105208
- Availability:
- Ships Same Business Day
- Weight:
- 0.70 LBS
- UNITS:
- KIT
- BORE - OVERSIZE:
- STANDARD
- BORE SIZE METRIC:
- 65.00 MM
- PRODUCT NAME:
- PISTON KIT
- RIDING STYLE:
- OFF-ROAD
- BORE - OVERSIZE METRIC:
- STANDARD
$74.43Qty in Cart: 0Quantity:Price:$74.43Subtotal: -
WSM Piston Kit 50-222-04K
WSM
$72.41Quality and construction that meet or exceed OEM, Feature improved E-clip design, Kits contain piston, rings, pin and clips, Rings available separately09105209- SKU:
- 09105209
- Availability:
- Ships Same Business Day
- Weight:
- 0.70 LBS
- BORE SIZE METRIC:
- 65.25 MM
- UNITS:
- KIT
- BORE - OVERSIZE METRIC:
- +0.25 MM
- RIDING STYLE:
- OFF-ROAD
- PRODUCT NAME:
- PISTON KIT
- BORE - OVERSIZE:
- +0,25 MM
$72.41Qty in Cart: 0Quantity:Price:$72.41Subtotal: -
WSM Piston Kit 50-222-05K
WSM
$72.41Quality and construction that meet or exceed OEM, Feature improved E-clip design, Kits contain piston, rings, pin and clips, Rings available separately09105210- SKU:
- 09105210
- Availability:
- Ships Same Business Day
- Weight:
- 0.60 LBS
- BORE - OVERSIZE:
- +0,50 MM
- BORE - OVERSIZE METRIC:
- +0.50 MM
- UNITS:
- KIT
- BORE SIZE METRIC:
- 65.50 MM
- RIDING STYLE:
- OFF-ROAD
- PRODUCT NAME:
- PISTON KIT
$72.41 -
WSM Piston Kit 50-257-09K
WSM
$96.69Quality and construction that meet or exceed OEM, Feature improved E-clip design, Kits contain piston, rings, pin and clips, Rings available separately09105240- SKU:
- 09105240
- Availability:
- Ships Same Business Day
- Weight:
- 0.85 LBS
- BORE - OVERSIZE METRIC:
- +1.50 MM
- PRODUCT NAME:
- PISTON KIT
- UNITS:
- KIT
- BORE SIZE METRIC:
- 75.50 MM
- BORE - OVERSIZE:
- +1,50 MM
- RIDING STYLE:
- ATV
$96.69Qty in Cart: 0Quantity:Price:$96.69Subtotal: -
WSM Piston Kit 50-251-06K
WSM
$165.71Quality and construction that meet or exceed OEM, Feature improved E-clip design, Kits contain piston, rings, pin and clips, Rings available separately09105244- SKU:
- 09105244
- Availability:
- Ships Same Business Day
- Weight:
- 0.95 LBS
- BORE - OVERSIZE:
- +0,75 MM
- BORE - OVERSIZE METRIC:
- +0.75 MM
- BORE SIZE METRIC:
- 81.75 MM
- PRODUCT NAME:
- PISTON KIT
- RIDING STYLE:
- ATV
- UNITS:
- KIT
$165.71 -
WSM Piston Kit 50-251-07K
WSM
$165.71Quality and construction that meet or exceed OEM, Feature improved E-clip design, Kits contain piston, rings, pin and clips, Rings available separately09105245- SKU:
- 09105245
- Availability:
- Ships Same Business Day
- Weight:
- 1.05 LBS
- BORE - OVERSIZE:
- +1,00 MM
- BORE - OVERSIZE METRIC:
- +1.00 MM
- UNITS:
- KIT
- PRODUCT NAME:
- PISTON KIT
- RIDING STYLE:
- ATV
- BORE SIZE METRIC:
- 82.00 MM
$165.71 -
WSM Piston Kit 50-315K
WSM
$111.27Quality and construction that meet or exceed OEM, Feature improved E-clip design, Kits contain piston, rings, pin and clips, Rings available separately09105247- SKU:
- 09105247
- Availability:
- Ships Same Business Day
- Weight:
- 0.91 LBS
- BORE - OVERSIZE:
- STANDARD
- BORE - OVERSIZE METRIC:
- STANDARD
- UNITS:
- KIT
- BORE SIZE METRIC:
- 80.00 MM
- PRODUCT NAME:
- PISTON KIT
- RIDING STYLE:
- UTV
$111.27 -
WSM Piston Kit 50-314K
WSM
$134.56Quality and construction that meet or exceed OEM, Feature improved E-clip design, Kits contain piston, rings, pin and clips, Rings available separately09105248- SKU:
- 09105248
- Availability:
- Ships Same Business Day
- Weight:
- 1.01 LBS
- BORE - OVERSIZE:
- STANDARD
- RIDING STYLE:
- ATV
- UNITS:
- KIT
- PISTON SIZE METRIC:
- STANDARD
- BORE - OVERSIZE METRIC:
- STANDARD
- PRODUCT NAME:
- PISTON KIT
$134.56Qty in Cart: 0Quantity:Price:$134.56Subtotal: -
WSM Piston Kit 50-605-06K
WSM
$76.02Quality and construction that meet or exceed OEM, Feature improved E-clip design, Kits contain piston, rings, pin and clips, Rings available separately09105253- SKU:
- 09105253
- Availability:
- Ships Same Business Day
- Weight:
- 1.10 LBS
- UNITS:
- KIT
- BORE - OVERSIZE METRIC:
- +0.75 MM
- PRODUCT NAME:
- PISTON KIT
- RIDING STYLE:
- ATV
- BORE - OVERSIZE:
- +0,75 MM
- BORE SIZE METRIC:
- 86.75 MM
$76.02
