ATV/UTV Engine
ATV/UTV Engine Parts at JJ Motorsports
Maximize your ATV or UTV's engine life with top-quality components from JJ Motorsports. Our selection includes gasket kits, connecting rods, water pump rebuild kits, and timing plugs designed for reliable sealing, strength, and easy installation in demanding off-road conditions. Compatible with Polaris, Can-Am, Honda, and more, these parts ensure peak power, reduced wear, and efficient operation for trail riding or utility work.
Shop trusted brands like Moose Racing for rebuild kits and Winderosa for gaskets. Explore related categories such as ATV/UTV air and fuel for intake upgrades or ATV/UTV drivetrain for transmission enhancements.
Top ATV/UTV Engine Products
- MOOSE UTILITY Clutch Cover Gasket Seal 500-1265-PU – Durable seal for clutch cover protection.
- WINDEROSA Standard Bore Gasket Kit 810585 – Complete kit for engine sealing and rebuilds.
- WORKS CONNECTION Engine Timing Plug 24-590 – Precision plug for accurate timing adjustments.
- MOOSE RACING Connecting Rod MR5026 – High-strength rod for engine durability.
- MOOSE RACING Water Pump Rebuild Kit 821865 – Comprehensive kit for water pump maintenance.
Browse our in-stock inventory below with same-day shipping and expert support. Questions? Contact us for fitment advice!
- Product
- Qty in Cart
- Quantity
- Price
- Subtotal
-
Wiseco Piston +2.25 mm Yamaha Banshee 350 1987-2006 513M06625
WISECO
$188.95If you're running a Banshee 350 competitively or pushing it hard on the trail, stock pistons won't cut it—they'll limit your power potential and wear out under sustained high RPM. The Wiseco +2.25mm...513M06625- SKU:
- 513M06625
- Availability:
- Ships Same Business Day
- Weight:
- 0.65 LBS
- BORE SIZE METRIC:
- 66.25 MM
- DISPLACEMENT:
- 372 CC
- STROKE LENGTH:
- 54,00 MM
- BORE - OVERSIZE:
- +2,25 MM
- PISTON MATERIAL:
- FORGED
- PRODUCT NAME:
- PISTON
- STROKE LENGTH METRIC:
- 54.00 MM
- BORE - OVERSIZE METRIC:
- +2.25 MM
- PISTON MATERIAL:
- ALUMINUM ALLOY
- RIDING STYLE:
- ATV
- UNITS:
- EACH
$188.95 -
Wiseco Piston Kit for 2003-2006 Kawasaki KFX80 PK1105
WISECO
$197.95A stock piston kit won't cut it if you're pushing your KFX80 toward high-performance riding or competition duty. The Wiseco Piston Kit delivers the durability and thermal stability needed for...09030336- SKU:
- 09030336
- Availability:
- Ships Same Business Day
- Weight:
- 0.60 LBS
- BORE SIZE METRIC:
- 52.00 MM
- ENGINE TYPE:
- 2-STROKE
- PISTON MATERIAL:
- 4032 ALUMINUM ALLOY
- PISTON SIZE METRIC:
- +2.00 MM
- RIDING STYLE:
- ATV
- BORE - OVERSIZE METRIC:
- +2.00 MM
- PRODUCT NAME:
- REBUILD KIT
- TYPE:
- TOP END
- BORE - OVERSIZE:
- +2,00 MM
- PISTON DIAMETER METRIC:
- 51.92 MM
- UNITS:
- KIT
- DISPLACEMENT:
- 82 CC
- MODEL:
- FORGED SERIES
- SKIRT COATING:
- NON-COATED
- STROKE LENGTH METRIC:
- 42.00 MM
$197.95 -
Wiseco Piston Kit Yamaha Raptor 660R 2001-2005 PK1062
WISECO
$359.95If you're rebuilding the top end of your Raptor 660 or pushing it into racing territory, OEM pistons won't cut it. Wiseco's forged piston kit delivers the strength and thermal stability needed to...09030339- SKU:
- 09030339
- Availability:
- Ships Same Business Day
- Weight:
- 2.30 LBS
- PRODUCT NAME:
- REBUILD KIT
- BORE - OVERSIZE:
- +1,00 MM
- BORE SIZE METRIC:
- 101.00 MM
- COMPRESSION RATIO IMPERIAL:
- 11.0:1
- PISTON DIAMETER METRIC:
- 100.92 MM
- PISTON MATERIAL:
- 2618 ALUMINUM ALLOY
- BORE - OVERSIZE METRIC:
- +1.00 MM
- DISPLACEMENT:
- 660 CC
- ENGINE TYPE:
- 4-STROKE
- MODEL:
- FORGED SERIES
- RIDING STYLE:
- ATV
- SKIRT COATING:
- ARMORGLIDE®
- UNITS:
- KIT
- STROKE LENGTH METRIC:
- 84.00 MM
- TYPE:
- TOP END
$359.95 -
Wiseco Piston Kit Yamaha YFM600FW Grizzly 4x4 1998-2001 PK1058
WISECO
$315.95A top-end rebuild demands precision-engineered components that can handle sustained high RPM loads without failure. Wiseco's forged piston technology delivers the strength and thermal stability...09030356- SKU:
- 09030356
- Availability:
- Ships Same Business Day
- Weight:
- 1.75 LBS
- BORE - OVERSIZE:
- +1,00 MM
- BORE - OVERSIZE METRIC:
- +1.00 MM
- BORE SIZE METRIC:
- 96.00 MM
- COMPRESSION RATIO IMPERIAL:
- 8.5:1
- MODEL:
- FORGED SERIES
- SKIRT COATING:
- NON-COATED
- PISTON DIAMETER METRIC:
- 95.92 MM
- PISTON MATERIAL:
- 2618 ALUMINUM ALLOY
- PRODUCT NAME:
- REBUILD KIT
- TYPE:
- TOP END
- DISPLACEMENT:
- 598 CC
- ENGINE TYPE:
- 4-STROKE
- UNITS:
- KIT
- RIDING STYLE:
- ATV
- STROKE LENGTH METRIC:
- 84.00 MM
$315.95 -
Wiseco Piston Kit Yamaha Raptor 660R 2001-2005 PK1060
WISECO
$359.95If you're pushing your Raptor 660 hard—whether on the track or in demanding terrain—a worn or compromised piston kit will limit your power output and risk catastrophic engine failure. The Wiseco...09030357- SKU:
- 09030357
- Availability:
- Ships Same Business Day
- Weight:
- 2.30 LBS
- DISPLACEMENT:
- 660 CC
- TYPE:
- TOP END
- UNITS:
- KIT
- BORE SIZE METRIC:
- 100.00 MM
- COMPRESSION RATIO IMPERIAL:
- 11.0:1
- BORE - OVERSIZE:
- STANDARD
- MODEL:
- FORGED SERIES
- PISTON DIAMETER METRIC:
- 99.92 MM
- STROKE LENGTH METRIC:
- 84.00 MM
- BORE - OVERSIZE METRIC:
- STANDARD
- ENGINE TYPE:
- 4-STROKE
- PISTON MATERIAL:
- 2618 ALUMINUM ALLOY
- PRODUCT NAME:
- REBUILD KIT
- RIDING STYLE:
- ATV
- SKIRT COATING:
- ARMORGLIDE®
$359.95Qty in Cart: 0Quantity:Price:$359.95Subtotal: -
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...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...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...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...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
$204.95Qty in Cart: 0Quantity:Price:$204.95Subtotal: -
Wiseco Yamaha YFM660R Raptor 2001-2005 Piston Kit PK1061
WISECO
$359.95When 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...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
$359.95 -
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...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...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...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
$404.95Maximize 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...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
$404.95 -
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...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
$132.95 -
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...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
$119.95Qty in Cart: 0Quantity:Price:$119.95Subtotal: -
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...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
$204.95Qty in Cart: 0Quantity:Price:$204.95Subtotal: -
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...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
$229.95Qty in Cart: 0Quantity:Price:$229.95Subtotal: -
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...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...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®
$439.95Qty in Cart: 0Quantity:Price:$439.95Subtotal:
