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
-
Wiseco Piston Kit 83mm for 1995-2002 Polaris Xplorer 400 PK1106
WISECO
$258.95When your Polaris Xplorer 400 demands more power and reliability, a quality piston kit isn't optional—it's essential for maintaining engine integrity under high-load conditions. The Wiseco PK1106 delivers the precision engineering and complete components...09030359- SKU:
- 09030359
- Availability:
- Ships Same Business Day
- Weight:
- 1.85 LBS
- MODEL:
- FORGED SERIES
- PRODUCT NAME:
- REBUILD KIT
- BORE - OVERSIZE:
- STANDARD
- BORE - OVERSIZE METRIC:
- STANDARD
- BORE SIZE METRIC:
- 83.00 MM
- ENGINE TYPE:
- 2-STROKE
- RIDING STYLE:
- ATV
- SKIRT COATING:
- NON-COATED
- UNITS:
- KIT
- DISPLACEMENT:
- 400 CC
- PISTON MATERIAL:
- 4032 ALUMINUM ALLOY
- PISTON DIAMETER METRIC:
- 82.92 MM
- STROKE LENGTH METRIC:
- 70.00 MM
- TYPE:
- TOP END
$258.95 -
Wiseco Piston Kit 83mm 10.25:1 Compression Yamaha YFM350R Raptor 2004 PK1018
WISECO
$264.95If you're running your YFM350R Raptor hard—whether on the track or in demanding trail conditions—factory pistons won't cut it. Wiseco's forged-aluminum construction delivers the strength and thermal stability you need for sustained high RPM operation...09030360- SKU:
- 09030360
- Availability:
- Ships Same Business Day
- Weight:
- 1.80 LBS
- TYPE:
- TOP END
- UNITS:
- KIT
- COMPRESSION RATIO IMPERIAL:
- 10.25:1
- STROKE LENGTH METRIC:
- 64.50 MM
- BORE - OVERSIZE:
- STANDARD
- BORE SIZE METRIC:
- 83.00 MM
- DISPLACEMENT:
- 349 CC
- MODEL:
- FORGED SERIES
- PISTON DIAMETER METRIC:
- 82.95 MM
- BORE - OVERSIZE METRIC:
- STANDARD
- ENGINE TYPE:
- 4-STROKE
- PISTON MATERIAL:
- 2618 ALUMINUM ALLOY
- PRODUCT NAME:
- REBUILD KIT
- RIDING STYLE:
- ATV
- SKIRT COATING:
- ARMORGLIDE®
$264.95 -
Wiseco Piston Kit for 1994-1999 Polaris Trail Boss 250 PK1084
WISECO
$218.95The Wiseco Piston Kit for your 1994-1999 Polaris Trail Boss 250 is engineered for riders who demand reliability during demanding rides and high-temperature operation. This complete top-end rebuild solution eliminates the guesswork by pairing matched...09030362- SKU:
- 09030362
- Availability:
- Ships Same Business Day
- Weight:
- 1.30 LBS
- MODEL:
- FORGED SERIES
- PRODUCT NAME:
- REBUILD KIT
- BORE - OVERSIZE:
- STANDARD
- BORE - OVERSIZE METRIC:
- STANDARD
- ENGINE TYPE:
- 2-STROKE
- RIDING STYLE:
- ATV
- SKIRT COATING:
- NON-COATED
- UNITS:
- KIT
- DISPLACEMENT:
- 244 CC
- PISTON DIAMETER METRIC:
- 71.92 MM
- PISTON MATERIAL:
- 4032 ALUMINUM ALLOY
- STROKE LENGTH METRIC:
- 60.00 MM
- BORE SIZE METRIC:
- 72.00 MM
- TYPE:
- TOP END
$218.95 -
Wiseco Piston Kit 66.25mm for 1988-2006 Yamaha YFS200 Blaster PK1090
WISECO
$204.95The Wiseco Piston Kit PK1090 is engineered specifically for the Yamaha YFS200 Blaster, delivering the durability and thermal stability required for sustained high-RPM performance. High-silicone forged aluminum construction minimizes expansion under...09030363- SKU:
- 09030363
- Availability:
- Ships Same Business Day
- Weight:
- 0.80 LBS
- BORE - OVERSIZE METRIC:
- +0.25 MM
- BORE SIZE METRIC:
- 66.25 MM
- PISTON DIAMETER METRIC:
- 66.20 MM
- PRODUCT NAME:
- REBUILD KIT
- BORE - OVERSIZE:
- +0,25 MM
- MODEL:
- PRO-LITE
- PISTON MATERIAL:
- 4032 ALUMINUM ALLOY
- DISPLACEMENT:
- 195 CC
- RIDING STYLE:
- ATV
- SKIRT COATING:
- NON-COATED
- UNITS:
- KIT
- ENGINE TYPE:
- 2-STROKE
- STROKE LENGTH METRIC:
- 57.00 MM
- TYPE:
- TOP END
$204.95 -
Wiseco Yamaha YFM660R Raptor 2001-2005 Piston Kit PK1061
WISECO
$352.02When you push your Raptor 660 to its limits, OEM pistons become a liability. The Wiseco PK1061 kit delivers forged-piston durability and thermal stability engineered specifically for high-RPM demands, giving you the reliability to focus on performance...09030367- SKU:
- 09030367
- Availability:
- Ships Same Business Day
- Weight:
- 2.30 LBS
- COMPRESSION RATIO IMPERIAL:
- 11.0:1
- RIDING STYLE:
- ATV
- STROKE LENGTH METRIC:
- 84.00 MM
- BORE - OVERSIZE:
- +0,50 MM
- BORE SIZE METRIC:
- 100.50 MM
- ENGINE TYPE:
- 4-STROKE
- SKIRT COATING:
- ARMORGLIDE®
- UNITS:
- KIT
- BORE - OVERSIZE METRIC:
- +0.50 MM
- PISTON DIAMETER METRIC:
- 100.42 MM
- PISTON MATERIAL:
- 2618 ALUMINUM ALLOY
- PRODUCT NAME:
- REBUILD KIT
- TYPE:
- TOP END
- DISPLACEMENT:
- 660 CC
- MODEL:
- FORGED SERIES
$352.02 -
Wiseco Piston Kit 64mm for 1987-2006 Yamaha YFZ350 Banshee PK139
WISECO
$421.95The Wiseco Piston Kit PK139 delivers the reliability and precision your YFZ350 Banshee demands, especially if you're pushing higher RPMs or running aggressive tuning. A complete top-end rebuild with forged pistons, rings, and gaskets eliminates the...09030752- SKU:
- 09030752
- Availability:
- Ships Same Business Day
- Weight:
- 1.95 LBS
- ENGINE TYPE:
- 2-STROKE
- MODEL:
- PRO-LITE
- TYPE:
- TOP END
- BORE - OVERSIZE:
- STANDARD
- BORE SIZE METRIC:
- 64.00 MM
- PISTON DIAMETER METRIC:
- 63.92 MM
- PRODUCT NAME:
- REBUILD KIT
- RIDING STYLE:
- ATV
- BORE - OVERSIZE METRIC:
- STANDARD
- DISPLACEMENT:
- 346 CC
- PISTON MATERIAL:
- 4032 ALUMINUM ALLOY
- STROKE LENGTH METRIC:
- 54.00 MM
- UNITS:
- KIT
- SKIRT COATING:
- NON-COATED
$421.95 -
Wiseco Piston Kit with Gaskets for Yamaha YFZ350 Banshee 1987-2006 PK140
WISECO
$421.95Your Yamaha YFZ350 Banshee demands a top-end that can handle aggressive RPMs and sustained high-load conditions. The Wiseco Piston Kit delivers the thermal stability and durability required to maximize power output while maintaining ring seal integrity...09030753- SKU:
- 09030753
- Availability:
- Ships Same Business Day
- Weight:
- 2.16 LBS
- SKIRT COATING:
- NON-COATED
- BORE - OVERSIZE:
- +0,50 MM
- ENGINE TYPE:
- 2-STROKE
- MODEL:
- PRO-LITE
- PISTON MATERIAL:
- 4032 ALUMINUM ALLOY
- RIDING STYLE:
- ATV
- TYPE:
- TOP END
- UNITS:
- KIT
- BORE - OVERSIZE METRIC:
- +0.50 MM
- PRODUCT NAME:
- REBUILD KIT
- BORE SIZE METRIC:
- 64.50 MM
- DISPLACEMENT:
- 352 CC
- PISTON DIAMETER METRIC:
- 64.42 MM
- STROKE LENGTH METRIC:
- 54.00 MM
$421.95 -
Wiseco 65.50mm Piston Kit with Gaskets for Yamaha YFZ350 Banshee PK142
WISECO
$394.95A worn or damaged piston directly limits your YFZ350 Banshee's RPM capability, throttle response, and overall engine longevity. The Wiseco PK142 kit restores factory compression and sealing while its high-silicone forged construction handles sustained...09030754- SKU:
- 09030754
- Availability:
- Ships Same Business Day
- Weight:
- 1.90 LBS
- PRODUCT NAME:
- REBUILD KIT
- BORE - OVERSIZE:
- +1,50 MM
- DISPLACEMENT:
- 364 CC
- ENGINE TYPE:
- 2-STROKE
- MODEL:
- PRO-LITE
- PISTON MATERIAL:
- 4032 ALUMINUM ALLOY
- RIDING STYLE:
- ATV
- TYPE:
- TOP END
- UNITS:
- KIT
- SKIRT COATING:
- NON-COATED
- BORE - OVERSIZE METRIC:
- +1.50 MM
- BORE SIZE METRIC:
- 65.50 MM
- PISTON DIAMETER METRIC:
- 65.50 MM
- STROKE LENGTH METRIC:
- 54.00 MM
$394.95Qty in Cart: 0Quantity:Price:$394.95Subtotal: -
Wiseco Piston Kit with Gaskets for Suzuki JR50 1978-2006 PK146
WISECO
$397.76Maximize your JR50's power output and engine longevity with a complete top-end rebuild. Wiseco's forged-piston design minimizes thermal expansion, maintaining precise ring seal and combustion efficiency even under aggressive riding conditions. This kit...09030755- SKU:
- 09030755
- Availability:
- Ships Same Business Day
- Weight:
- 2.25 LBS
- BORE - OVERSIZE METRIC:
- +2.25 MM
- ENGINE TYPE:
- 2-STROKE
- MODEL:
- PRO-LITE
- RIDING STYLE:
- ATV
- TYPE:
- TOP END
- BORE - OVERSIZE:
- +2,25 MM
- SKIRT COATING:
- NON-COATED
- UNITS:
- KIT
- DISPLACEMENT:
- 372 CC
- PISTON DIAMETER METRIC:
- 66.17 MM
- PISTON MATERIAL:
- 4032 ALUMINUM ALLOY
- STROKE LENGTH METRIC:
- 54.00 MM
- BORE SIZE METRIC:
- 66.25 MM
- PRODUCT NAME:
- REBUILD KIT
$397.76 -
Wiseco Piston Kit for Kawasaki KFX80 2003-2006 673M05000
WISECO
$132.95The OEM piston in your KFX80 wasn't designed with racing in mind. This Wiseco forged piston kit replaces it with a component engineered for sustained high-RPM power and durability, giving you the compression and reliability needed to push harder on the...673M05000- SKU:
- 673M05000
- Availability:
- Ships Same Business Day
- Weight:
- 0.36 LBS
- BORE - OVERSIZE:
- STANDARD
- BORE - OVERSIZE METRIC:
- STANDARD
- PISTON MATERIAL:
- FORGED
- PRODUCT NAME:
- PISTON
- BORE SIZE METRIC:
- 50.00 MM
- PISTON MATERIAL:
- ALUMINUM ALLOY
- RIDING STYLE:
- ATV
- STROKE LENGTH:
- 42,00 MM
- STROKE LENGTH METRIC:
- 42.00 MM
- UNITS:
- EACH
- DISPLACEMENT:
- 82 CC
- ENGINE TYPE:
- 2-STROKE
$132.95Qty in Cart: 0Quantity:Price:$132.95Subtotal: -
Wiseco Piston Kit 50mm Overbore for 1987-2006 Kawasaki KFX80 673M05050
WISECO
$119.95When you're pushing your KFX80 to its limits, stock pistons become your biggest bottleneck—compromising durability under high RPM and leaving performance on the table. The Wiseco 50mm Overbore Piston Kit delivers the strength and precision you need to...673M05050- SKU:
- 673M05050
- Availability:
- Ships Same Business Day
- Weight:
- 0.40 LBS
- BORE SIZE METRIC:
- 50.50 MM
- PISTON MATERIAL:
- FORGED
- PRODUCT NAME:
- PISTON
- PISTON MATERIAL:
- ALUMINUM ALLOY
- RIDING STYLE:
- ATV
- STROKE LENGTH:
- 42,00 MM
- STROKE LENGTH METRIC:
- 42.00 MM
- UNITS:
- EACH
- BORE - OVERSIZE:
- +0,50 MM
- BORE - OVERSIZE METRIC:
- +0.50 MM
- DISPLACEMENT:
- 82 CC
- ENGINE TYPE:
- 2-STROKE
$119.95 -
Wiseco Piston Kit 68.00 mm Oversize for Suzuki LT-250R QuadRacer 1988-1992 571M06800
WISECO
$204.95If you're running a Suzuki LT-250R QuadRacer and pushing for competition-level performance, a quality piston kit is non-negotiable. The Wiseco 68.00 mm oversize piston delivers the durability and power gains you need to stay competitive without...552M06800- SKU:
- 552M06800
- Availability:
- Ships Same Business Day
- Weight:
- 0.70 LBS
- BORE - OVERSIZE METRIC:
- +1.00 MM
- BORE SIZE METRIC:
- 68.00 MM
- PRODUCT NAME:
- PISTON
- BORE - OVERSIZE:
- +1,00 MM
- PISTON MATERIAL:
- FORGED
- DISPLACEMENT:
- 246,8 CC
- STROKE LENGTH:
- 70,00 MM
- PISTON MATERIAL:
- ALUMINUM ALLOY
- RIDING STYLE:
- ATV
- STROKE LENGTH METRIC:
- 70.00 MM
- UNITS:
- EACH
$204.95 -
Wiseco Piston Kit 69.00 mm Oversize for Suzuki LT-250R QuadRacer 1987 552M06900
WISECO
$229.95If you're running a Suzuki LT-250R QuadRacer at the limits of competition, your factory pistons are holding back your potential. The Wiseco 69.00 mm oversize piston kit delivers the strength and precision you need to push higher RPMs and extract genuine...552M06900- SKU:
- 552M06900
- Availability:
- Ships Same Business Day
- Weight:
- 0.75 LBS
- BORE - OVERSIZE:
- +2,00 MM
- BORE SIZE METRIC:
- 69.00 MM
- PISTON MATERIAL:
- ALUMINUM ALLOY
- PRODUCT NAME:
- PISTON
- STROKE LENGTH METRIC:
- 70.00 MM
- BORE - OVERSIZE METRIC:
- +2.00 MM
- RIDING STYLE:
- ATV
- UNITS:
- EACH
- DISPLACEMENT:
- 246,8 CC
- PISTON MATERIAL:
- FORGED
- STROKE LENGTH:
- 70,00 MM
$229.95 -
Wiseco Piston Kit 2014 Polaris RZR 800 10.2:1 PK1861
WISECO
$439.95When you're pushing your RZR 800 to its limits, stock pistons become the weak link. Wiseco's forged piston kit delivers the strength and thermal stability you need to maintain peak power output without sacrificing reliability—whether you're racing hard...09031284- SKU:
- 09031284
- Availability:
- Ships Same Business Day
- Weight:
- 2.55 LBS
- MODEL:
- FORGED SERIES
- TYPE:
- TOP END
- PISTON MATERIAL:
- 4032 ALUMINUM ALLOY
- RIDING STYLE:
- UTV
- UNITS:
- KIT
- BORE - OVERSIZE:
- STANDARD
- BORE - OVERSIZE METRIC:
- STANDARD
- DISPLACEMENT:
- 769 CC
- ENGINE TYPE:
- 4-STROKE
- PISTON DIAMETER METRIC:
- 79.94 MM
- RIDING STYLE:
- ATV
- STROKE LENGTH METRIC:
- 76.50 MM
- BORE SIZE METRIC:
- 80.00 MM
- COMPRESSION RATIO IMPERIAL:
- 10.2:1
- PRODUCT NAME:
- REBUILD KIT
- SKIRT COATING:
- ARMORGLIDE®
$439.95Qty in Cart: 0Quantity:Price:$439.95Subtotal: -
Wiseco Piston Kit 11.1:1 for 2008-2014 Polaris RZR 800 PK1862
WISECO
$439.95If you're serious about extracting maximum performance from your RZR 800, a high-compression piston kit is one of the most effective upgrades you can make. The Wiseco PK1862 delivers a measurable jump in power output through its 11.1:1 compression ratio...09031285- SKU:
- 09031285
- Availability:
- Ships Same Business Day
- Weight:
- 2.70 LBS
- TYPE:
- TOP END
- UNITS:
- KIT
- BORE - OVERSIZE:
- STANDARD
- BORE - OVERSIZE METRIC:
- STANDARD
- DISPLACEMENT:
- 769 CC
- ENGINE TYPE:
- 4-STROKE
- MODEL:
- FORGED SERIES
- PISTON DIAMETER METRIC:
- 79.94 MM
- RIDING STYLE:
- ATV
- STROKE LENGTH METRIC:
- 76.50 MM
- COMPRESSION RATIO IMPERIAL:
- 11.0:1
- PISTON MATERIAL:
- 4032 ALUMINUM ALLOY
- RIDING STYLE:
- UTV
- BORE SIZE METRIC:
- 80.00 MM
- PRODUCT NAME:
- REBUILD KIT
- SKIRT COATING:
- ARMORGLIDE®
$439.95 -
Wiseco Kawasaki KFX450R 2008-2014 Piston Kit PK1864
WISECO
$341.95When you're ready to maximize the displacement and reliability of your KFX450R, a quality piston kit is non-negotiable. The Wiseco PK1864 gives you forged pistons paired with a complete gasket set and all necessary hardware—everything required for a...09031287- SKU:
- 09031287
- Availability:
- Ships Same Business Day
- Weight:
- 1.90 LBS
- BORE SIZE METRIC:
- 96.00 MM
- DISPLACEMENT:
- 449 CC
- PRODUCT NAME:
- PISTON KIT
- STROKE LENGTH IMPERIAL:
- 2-7/16'
- COMPRESSION RATIO IMPERIAL:
- 12.4:1
- BORE - OVERSIZE METRIC:
- STANDARD
- RIDING STYLE:
- ATV
- BORE - OVERSIZE:
- STANDARD
- UNITS:
- KIT
$341.95 -
Wiseco Piston Kit 82mm 11.5:1 Compression Kawasaki KFX700 2004-2009 4896M08200
WISECO
$189.95If you're running a KFX700 and serious about extracting maximum power from your engine, an OEM piston won't cut it. The Wiseco 82mm 11.5:1 compression piston kit delivers the precision engineering and durability needed for consistent performance gains,...09102840- SKU:
- 09102840
- Availability:
- Ships Same Business Day
- Weight:
- 0.96 LBS
- BORE SIZE METRIC:
- 82.00 MM
- STROKE LENGTH METRIC:
- 66.00 MM
- BORE - OVERSIZE:
- STANDARD
- BORE - OVERSIZE METRIC:
- STANDARD
- COMPRESSION RATIO IMPERIAL:
- 11.5:1
- RIDING STYLE:
- ATV
- DISPLACEMENT:
- 697 CC
- ENGINE TYPE:
- 4-STROKE
- PISTON MATERIAL:
- ALUMINUM ALLOY
- PISTON MATERIAL:
- FORGED
- PRODUCT NAME:
- PISTON
- UNITS:
- EACH
$189.95Qty in Cart: 0Quantity:Price:$189.95Subtotal: -
Wiseco Piston Kit 95.50mm 11.7:1 Compression Suzuki LT-R450 2006-2009 4911M09550
WISECO
$239.95If you're running a stock LT-R450 piston or dealing with worn compression, the Wiseco 95.50mm kit restores—or exceeds—factory performance with forged aluminum construction designed to handle sustained high-RPM abuse. This is a straightforward bolt-in...09102846- SKU:
- 09102846
- Availability:
- Ships Same Business Day
- Weight:
- 1.05 LBS
- PISTON MATERIAL:
- FORGED
- BORE - OVERSIZE:
- STANDARD
- BORE - OVERSIZE METRIC:
- STANDARD
- ENGINE TYPE:
- 4-STROKE
- PISTON MATERIAL:
- ALUMINUM ALLOY
- PRODUCT NAME:
- PISTON
- RIDING STYLE:
- ATV
- UNITS:
- EACH
- COMPRESSION RATIO IMPERIAL:
- 11.7:1
- DISPLACEMENT:
- 450 CC
- STROKE LENGTH METRIC:
- 62.80 MM
- BORE SIZE METRIC:
- 95.50 MM
$239.95 -
Wiseco Piston Kit 79.50mm for Honda TRX350 Rancher 2000-2006 4933M07950
WISECO
$224.95If your TRX350 Rancher is showing signs of wear or you're chasing better throttle response and reliability, a quality piston kit is essential to restoring—or exceeding—factory performance. The Wiseco 79.50mm piston kit delivers the precision engineering...09102850- SKU:
- 09102850
- Availability:
- Ships Same Business Day
- Weight:
- 0.85 LBS
- BORE SIZE METRIC:
- 79.50 MM
- ENGINE TYPE:
- 4-STROKE
- PISTON MATERIAL:
- ALUMINUM ALLOY
- PRODUCT NAME:
- PISTON
- RIDING STYLE:
- ATV
- UNITS:
- EACH
- PISTON MATERIAL:
- FORGED
- COMPRESSION RATIO IMPERIAL:
- 8.5:1
- DISPLACEMENT:
- 325 CC
- STROKE LENGTH METRIC:
- 68.00 MM
- BORE - OVERSIZE:
- +1,00 MM
- BORE - OVERSIZE METRIC:
- +1.00 MM
$224.95 -
Wiseco Piston Kit 75mm 0.50mm Oversize for Polaris 300 1994-1995 PK1517
WISECO
$229.95When you're pushing your Polaris 300 to the edge, stock pistons won't cut it. This Wiseco piston kit delivers the durability and thermal stability your 2-cycle engine demands at elevated RPMs, complete with everything needed for a full top-end rebuild...09030639- SKU:
- 09030639
- Availability:
- Ships Same Business Day
- Weight:
- 1.20 LBS
- PRODUCT NAME:
- REBUILD KIT
- ENGINE TYPE:
- 2-STROKE
- MODEL:
- PRO-LITE
- PISTON DIAMETER METRIC:
- 74.92 MM
- RIDING STYLE:
- ATV
- TYPE:
- TOP END
- BORE - OVERSIZE:
- +0,50 MM
- PISTON MATERIAL:
- 4032 ALUMINUM ALLOY
- UNITS:
- KIT
- BORE - OVERSIZE METRIC:
- +0.50 MM
- BORE SIZE METRIC:
- 75.00 MM
- DISPLACEMENT:
- 283 CC
- SKIRT COATING:
- NON-COATED
- STROKE LENGTH METRIC:
- 65.00 MM
$229.95
