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
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Wiseco Engine Rebuild Kit Yamaha YFM350 Warrior 1987-2004 PWR137-840
WISECO
$754.95Engine wear is inevitable, but premature failure isn't. The Wiseco PWR137-840 Engine Rebuild Kit delivers all the precision components you need to restore your YFM350 Warrior to factory performance...09031523- SKU:
- 09031523
- Availability:
- Ships Same Business Day
- Weight:
- 15.25 LBS
$754.95Qty in Cart: 0Quantity:Price:$754.95Subtotal: -
Wiseco Engine Kit for Yamaha Grizzly 660 2002-2008 PWR148-100
WISECO
$1,044.95If you're facing worn piston rings, a scored cylinder, or metal fatigue in your Grizzly 660's engine, a complete rebuild is your path back to reliable performance. The Wiseco Engine Kit gives you...09031534- SKU:
- 09031534
- Availability:
- Ships Same Business Day
- Weight:
- 19.60 LBS
$1,044.95Qty in Cart: 0Quantity:Price:$1,044.95Subtotal: -
Wiseco Ring Set 66.50mm Suzuki LT230S 1985-1988 2618XD
WISECO
$49.95Piston ring degradation is one of the fastest ways to lose compression and power in your two-stroke or four-stroke engine. The Wiseco Ring Set 2618XD delivers precision-engineered sealing that...2618XD- SKU:
- 2618XD
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- PRODUCT NAME:
- PISTON RING
- UNITS:
- SET
- DISPLACEMENT:
- 229 CC
- PISTON MATERIAL:
- ALUMINUM
- BORE SIZE METRIC:
- 66.50 MM
- RIDING STYLE:
- ATV
$49.95Qty in Cart: 0Quantity:Price:$49.95Subtotal: -
Wiseco 1985-1986 Suzuki LT250R QuadRacer 71.50mm Piston Kit PK1532
WISECO
$289.95The Wiseco PK1532 piston kit delivers the complete top-end solution for your 1985-1986 Suzuki LT250R QuadRacer, eliminating guesswork during engine rebuilds. Forged from high-silicone bar stock, this...09030646- SKU:
- 09030646
- Availability:
- Ships Same Business Day
- Weight:
- 1.55 LBS
- DISPLACEMENT:
- 247 CC
- SKIRT COATING:
- NON-COATED
- UNITS:
- KIT
- BORE - OVERSIZE:
- +1,50 MM
- BORE SIZE METRIC:
- 71.50 MM
- PISTON DIAMETER METRIC:
- 71.42 MM
- PISTON MATERIAL:
- 4032 ALUMINUM ALLOY
- STROKE LENGTH METRIC:
- 64.80 MM
- BORE - OVERSIZE METRIC:
- +1.50 MM
- ENGINE TYPE:
- 2-STROKE
- MODEL:
- PRO-LITE
- RIDING STYLE:
- ATV
- TYPE:
- TOP END
- PRODUCT NAME:
- REBUILD KIT
$289.95Qty in Cart: 0Quantity:Price:$289.95Subtotal: -
Wiseco Yamaha YFM700R Raptor 2006-2014 Piston Kit with Gaskets PK1415
WISECO
$334.95If you're rebuilding or refreshing your YFM700R's top end, you need pistons engineered to handle the demands of high-RPM performance. Wiseco's forged-aluminum construction delivers the strength and...09030499- SKU:
- 09030499
- Availability:
- Ships Same Business Day
- Weight:
- 2.30 LBS
- COMPRESSION RATIO IMPERIAL:
- 9.2:1
- ENGINE TYPE:
- 4-STROKE
- PISTON MATERIAL:
- 2618 ALUMINUM ALLOY
- RIDING STYLE:
- ATV
- STROKE LENGTH METRIC:
- 84.00 MM
- TYPE:
- TOP END
- PRODUCT NAME:
- REBUILD KIT
- BORE - OVERSIZE:
- STANDARD
- BORE - OVERSIZE METRIC:
- STANDARD
- PISTON DIAMETER METRIC:
- 102.00 MM
- SKIRT COATING:
- ARMORGLIDE®
- UNITS:
- KIT
- BORE SIZE METRIC:
- 102.00 MM
- DISPLACEMENT:
- 686 CC
- MODEL:
- FORGED SERIES
$334.95Qty in Cart: 0Quantity:Price:$334.95Subtotal: -
Wiseco Piston Kit 66.75mm for Yamaha YFS200 Blaster 1988-2006 573M06675
WISECO
$155.95If you're running a YFS200 Blaster and want to restore lost compression or build more power, a quality piston kit is essential. The Wiseco 66.75mm piston delivers the precision fit and material...09102799- SKU:
- 09102799
- Availability:
- Ships Same Business Day
- Weight:
- 0.65 LBS
- BORE - OVERSIZE:
- +0,75 MM
- BORE - OVERSIZE METRIC:
- +0.75 MM
- PISTON MATERIAL:
- ALUMINUM ALLOY
- PISTON MATERIAL:
- FORGED
- PRODUCT NAME:
- PISTON
- UNITS:
- EACH
- BORE SIZE METRIC:
- 66.75 MM
- DISPLACEMENT:
- 195 CC
- ENGINE TYPE:
- 2-STROKE
- RIDING STYLE:
- ATV
- STROKE LENGTH METRIC:
- 57.00 MM
$155.95 -
Wiseco Piston Kit with Gasket for Suzuki LT250R 1985-1986 72.00 mm PK1533
WISECO
$289.95Stock pistons can't handle the demands of high-performance 2-stroke racing, especially in a machine as aggressive as the LT250R. The Wiseco PK1533 kit delivers the thermal stability and durability...09030647- SKU:
- 09030647
- Availability:
- Ships Same Business Day
- Weight:
- 1.60 LBS
- PISTON DIAMETER METRIC:
- 71.92 MM
- PRODUCT NAME:
- REBUILD KIT
- PISTON MATERIAL:
- 4032 ALUMINUM ALLOY
- PISTON SIZE METRIC:
- +2.00 MM
- BORE - OVERSIZE:
- +2,00 MM
- BORE SIZE METRIC:
- 72.00 MM
- RIDING STYLE:
- ATV
- TYPE:
- TOP END
- BORE - OVERSIZE METRIC:
- +2.00 MM
- DISPLACEMENT:
- 247 CC
- ENGINE TYPE:
- 2-STROKE
- MODEL:
- PRO-LITE
- SKIRT COATING:
- NON-COATED
- STROKE LENGTH METRIC:
- 64.80 MM
- UNITS:
- KIT
$289.95Qty in Cart: 0Quantity:Price:$289.95Subtotal: -
Wiseco Piston Kit Yamaha YFZ450 2004-2013 11.4:1 Compression 4865M09500
WISECO
$243.95If you're serious about maximizing your YFZ450's power output and reliability, a quality piston kit is non-negotiable. Wiseco's forged-aluminum construction handles sustained high RPM and boost...09101668- SKU:
- 09101668
- Availability:
- Ships Same Business Day
- Weight:
- 1.03 LBS
- BORE SIZE METRIC:
- 95.00 MM
- PISTON MATERIAL:
- FORGED
- STROKE LENGTH METRIC:
- 62.00 MM
- ENGINE TYPE:
- 4-STROKE
- RIDING STYLE:
- ATV
- UNITS:
- EACH
- BORE - OVERSIZE:
- STANDARD
- BORE - OVERSIZE METRIC:
- STANDARD
- COMPRESSION RATIO IMPERIAL:
- 12.0:1
- DISPLACEMENT:
- 439 CC
- PISTON MATERIAL:
- ALUMINUM ALLOY
- PRODUCT NAME:
- PISTON
- SKIRT COATING:
- ARMORGLIDE®
$243.95 -
Wiseco Piston Kit 95.5mm 13:1 Suzuki LT-R450 2006-2011 4912M09550
WISECO
$274.95If you're rebuilding your LT-R 450 or pushing it to its limits on the track, a worn or damaged piston directly kills your power output and reliability. The Wiseco 95.5mm piston kit delivers the...09101672- SKU:
- 09101672
- Availability:
- Ships Same Business Day
- Weight:
- 1.06 LBS
- BORE SIZE METRIC:
- 95.50 MM
- DISPLACEMENT:
- 450 CC
- ENGINE TYPE:
- 4-STROKE
- RIDING STYLE:
- ATV
- PISTON MATERIAL:
- FORGED
- PRODUCT NAME:
- PISTON
- BORE - OVERSIZE:
- STANDARD
- BORE - OVERSIZE METRIC:
- STANDARD
- PISTON MATERIAL:
- ALUMINUM ALLOY
- STROKE LENGTH METRIC:
- 62.80 MM
- UNITS:
- EACH
$274.95Qty in Cart: 0Quantity:Price:$274.95Subtotal: -
Wiseco Piston Kit for Polaris Sportsman 400 4x4 1994-1996 PK1111
WISECO
$254.95When your Polaris Sportsman 400's engine is due for a complete rebuild, settling for incomplete or mismatched components means risking poor compression, premature wear, and inconsistent performance...09030463- SKU:
- 09030463
- Availability:
- Ships Same Business Day
- Weight:
- 1.95 LBS
- BORE - OVERSIZE:
- +2,00 MM
- PISTON DIAMETER METRIC:
- 84.92 MM
- PISTON SIZE METRIC:
- +2.00 MM
- RIDING STYLE:
- ATV
- STROKE LENGTH METRIC:
- 70.00 MM
- TYPE:
- TOP END
- BORE - OVERSIZE METRIC:
- +2.00 MM
- BORE SIZE METRIC:
- 85.00 MM
- DISPLACEMENT:
- 400 CC
- ENGINE TYPE:
- 2-STROKE
- PRODUCT NAME:
- REBUILD KIT
- PISTON MATERIAL:
- 4032 ALUMINUM ALLOY
- SKIRT COATING:
- NON-COATED
- UNITS:
- KIT
- MODEL:
- FORGED SERIES
$254.95Qty in Cart: 0Quantity:Price:$254.95Subtotal: -
Wiseco 87mm Piston Kit for Honda TRX400EX 1999-2008 PK1039
WISECO
$349.95When your TRX400EX's top-end shows signs of wear or you're ready to unlock additional performance, a quality piston kit is non-negotiable. Wiseco's forged construction delivers the strength and...09030473- SKU:
- 09030473
- Availability:
- Ships Same Business Day
- Weight:
- 1.70 LBS
- PISTON SIZE METRIC:
- +2.00 MM
- PRODUCT NAME:
- REBUILD KIT
- DISPLACEMENT:
- 397 CC
- MODEL:
- FORGED SERIES
- SKIRT COATING:
- NON-COATED
- STROKE LENGTH METRIC:
- 70.00 MM
- BORE - OVERSIZE:
- +2,00 MM
- BORE - OVERSIZE METRIC:
- +2.00 MM
- BORE SIZE METRIC:
- 87.00 MM
- COMPRESSION RATIO IMPERIAL:
- 11.0:1
- ENGINE TYPE:
- 4-STROKE
- PISTON DIAMETER METRIC:
- 86.95 MM
- PISTON MATERIAL:
- 2618 ALUMINUM ALLOY
- RIDING STYLE:
- ATV
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- TOP END
- UNITS:
- KIT
$349.95Qty in Cart: 0Quantity:Price:$349.95Subtotal: -
Wiseco Piston Kit Yamaha XT250 2013-2022 74mm 10.5:1 4951M07400
WISECO
$224.95The Wiseco Piston Kit 4951M07400 delivers the precision engineering your XT250 demands for reliable performance across high-heat, high-stress riding conditions. OEM-spec pistons lose efficiency over...09102854- SKU:
- 09102854
- Availability:
- Ships Same Business Day
- Weight:
- 0.65 LBS
- BORE SIZE METRIC:
- 74.00 MM
- RIDING STYLE:
- STREET
- DISPLACEMENT:
- 249 CC
- STROKE LENGTH METRIC:
- 58.00 MM
- BORE - OVERSIZE:
- STANDARD
- BORE - OVERSIZE METRIC:
- STANDARD
- ENGINE TYPE:
- 4-STROKE
- PISTON MATERIAL:
- ALUMINUM ALLOY
- PISTON MATERIAL:
- FORGED
- PRODUCT NAME:
- PISTON
- RIDING STYLE:
- ATV
- UNITS:
- EACH
- COMPRESSION RATIO IMPERIAL:
- 10.5:1
$224.95Qty in Cart: 0Quantity:Price:$224.95Subtotal: -
Wiseco Piston Kit for Polaris RZR 800 2008-2014 4962M08000
WISECO
$189.95If you're running a Polaris RZR 800 and pushing it hard on the trail or track, your factory pistons are likely the weak point limiting your engine's potential. Wiseco pistons deliver the precision...09102857- SKU:
- 09102857
- Availability:
- Ships Same Business Day
- Weight:
- 0.81 LBS
- PISTON MATERIAL:
- FORGED
- BORE SIZE METRIC:
- 80.00 MM
- STROKE LENGTH METRIC:
- 76.50 MM
- BORE - OVERSIZE:
- STANDARD
- BORE - OVERSIZE METRIC:
- STANDARD
- COMPRESSION RATIO IMPERIAL:
- 11.0:1
- DISPLACEMENT:
- 769 CC
- ENGINE TYPE:
- 4-STROKE
- PISTON MATERIAL:
- ALUMINUM ALLOY
- PRODUCT NAME:
- PISTON
- RIDING STYLE:
- ATV
- UNITS:
- EACH
$189.95Qty in Cart: 0Quantity:Price:$189.95Subtotal: -
Wiseco Piston Kit Yamaha Raptor 700 2006-2014 11:1 Compression 4966M10050
WISECO
$224.95If you're running a high-mileage Raptor 700 or preparing for serious trail and competition use, a worn piston kit directly impacts engine reliability and power delivery. The Wiseco 4966M10050...09102860- SKU:
- 09102860
- Availability:
- Ships Same Business Day
- Weight:
- 1.28 LBS
- BORE - OVERSIZE:
- +0,50 MM
- BORE SIZE METRIC:
- 100.50 MM
- COMPRESSION RATIO IMPERIAL:
- 9.9:1
- PISTON MATERIAL:
- FORGED
- BORE - OVERSIZE METRIC:
- +0.50 MM
- STROKE LENGTH METRIC:
- 84.00 MM
- DISPLACEMENT:
- 666 CC
- ENGINE TYPE:
- 4-STROKE
- PISTON MATERIAL:
- ALUMINUM ALLOY
- PRODUCT NAME:
- PISTON
- RIDING STYLE:
- ATV
- UNITS:
- EACH
$224.95Qty in Cart: 0Quantity:Price:$224.95Subtotal: -
Wiseco Piston Kit Yamaha YFM700R Raptor 2006-2014 102mm 11:1 4903M10200
WISECO
$249.95When your Raptor's factory piston can't handle increased boost or extended high-RPM use, a quality replacement becomes essential for maintaining reliability and power delivery. The Wiseco Piston Kit...09102862- SKU:
- 09102862
- Availability:
- Ships Same Business Day
- Weight:
- 1.45 LBS
- COMPRESSION RATIO IMPERIAL:
- 9.9:1
- BORE - OVERSIZE:
- +2,00 MM
- BORE - OVERSIZE METRIC:
- +2.00 MM
- BORE SIZE METRIC:
- 102.00 MM
- DISPLACEMENT:
- 660 CC
- ENGINE TYPE:
- 4-STROKE
- PRODUCT NAME:
- PISTON
- RIDING STYLE:
- ATV
- STROKE LENGTH METRIC:
- 84.00 MM
- UNITS:
- EACH
- PISTON MATERIAL:
- ALUMINUM ALLOY
- PISTON MATERIAL:
- FORGED
$249.95 -
Wiseco Piston Yamaha XV750 Virago 1981 4419M08300
WISECO
$194.95When your XV750 Virago demands reliable top-end performance, a quality piston is non-negotiable. The Wiseco 4419M08300 delivers the strength and precision your engine needs, whether you're cruising...4419M08300- SKU:
- 4419M08300
- Availability:
- Ships Same Business Day
- Weight:
- 0.95 LBS
- BORE - OVERSIZE:
- STANDARD
- BORE SIZE METRIC:
- 83.00 MM
- PISTON DIAMETER METRIC:
- 82.95 MM
- PISTON MATERIAL:
- FORGED 2618 ALUMINUM
- PRODUCT NAME:
- PISTON KIT
- DISPLACEMENT:
- 349 CC
- MODEL:
- FORGED SERIES
- BORE - OVERSIZE METRIC:
- STANDARD
- ENGINE TYPE:
- 4-STROKE
- RIDING STYLE:
- ATV
- STROKE LENGTH METRIC:
- 64.50 MM
- COMPRESSION RATIO IMPERIAL:
- 10.25:1
- RIDING STYLE:
- OFF-ROAD
- SKIRT COATING:
- ARMORGLIDE®
- UNITS:
- KIT
$194.95Qty in Cart: 0Quantity:Price:$194.95Subtotal: -
Wiseco Piston Kit Yamaha YFM350 Grizzly 2007-2014 0.50mm 4419M08350
WISECO
$194.95A piston kit is the foundation of reliable engine performance—wear or damage here cascades into catastrophic failure. The Wiseco 0.50mm oversize piston for your YFM350 Grizzly delivers the durability...4419M08350- SKU:
- 4419M08350
- Availability:
- Ships Same Business Day
- Weight:
- 0.95 LBS
- COMPRESSION RATIO IMPERIAL:
- 10.25:1
- DISPLACEMENT:
- 349 CC
- MODEL:
- FORGED SERIES
- BORE - OVERSIZE:
- +0,50 MM
- ENGINE TYPE:
- 4-STROKE
- RIDING STYLE:
- ATV
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- BORE SIZE METRIC:
- 83.50 MM
- PISTON DIAMETER METRIC:
- 83.45 MM
- PISTON MATERIAL:
- FORGED 2618 ALUMINUM
- PRODUCT NAME:
- PISTON KIT
- SKIRT COATING:
- ARMORGLIDE®
- BORE - OVERSIZE METRIC:
- +0.50 MM
- STROKE LENGTH METRIC:
- 64.50 MM
$194.95Qty in Cart: 0Quantity:Price:$194.95Subtotal: -
Wiseco Piston +0.50 mm Yamaha Blaster 200 4x2 1988-2006 573M06650
WISECO
$155.95If you're running a Yamaha Blaster 200 and serious about extracting real power gains, a properly sized piston upgrade is essential—and the Wiseco +0.50 mm piston delivers measurable increases in...573M06650- SKU:
- 573M06650
- Availability:
- Ships Same Business Day
- Weight:
- 0.80 LBS
- PRODUCT NAME:
- PISTON
- BORE - OVERSIZE METRIC:
- +0.50 MM
- BORE SIZE METRIC:
- 66.50 MM
- PISTON MATERIAL:
- ALUMINUM ALLOY
- PISTON MATERIAL:
- FORGED
- UNITS:
- EACH
- BORE - OVERSIZE:
- +0,50 MM
- DISPLACEMENT:
- 195 CC
- RIDING STYLE:
- ATV
- STROKE LENGTH:
- 57,00 MM
- STROKE LENGTH METRIC:
- 57.00 MM
$155.95 -
On Sale
Wossner Piston Kit 72.93mm Polaris Trail Boss 250 1990-2005 8094D100
WOSSNER
MSRP: $122.00Now: $115.90Was: $122.00If you're running a Polaris Trail Boss 250, piston wear directly impacts throttle response, compression, and fuel efficiency—and a worn piston kit forces you to rebuild sooner and spend more on...09105511- SKU:
- 09105511
- Availability:
- Ships Same Business Day
- Weight:
- 0.81 LBS
- BORE - OVERSIZE METRIC:
- +1.00 MM
- BORE SIZE METRIC:
- 73.00 MM
- ENGINE TYPE:
- 2-STROKE
- UNITS:
- KIT
- DISPLACEMENT:
- 244 CC
- PISTON SIZE METRIC:
- 72.93 MM
- PISTON MATERIAL:
- ALUMINUM ALLOY
- PISTON MATERIAL:
- FORGED
- RIDING STYLE:
- ATV
- BORE - OVERSIZE:
- +1,00 MM
- MODEL:
- STANDARD SERIES
- PRODUCT NAME:
- PISTON KIT
- TYPE:
- DUAL RING
MSRP: $122.00Now: $115.90Was: $122.00Qty in Cart: 0Quantity:Price:MSRP: $122.00Now: $115.90Was: $122.00Subtotal: -
On Sale
Wossner 84.43mm Piston Kit for Polaris 400L 1995 8097D150
WOSSNER
MSRP: $152.00Now: $144.40Was: $152.00If you're running a 1995 Polaris 400L, a worn or damaged piston directly compromises combustion efficiency, throttle response, and engine longevity. The Wossner 84.43mm Piston Kit delivers OEM-spec...09105522- SKU:
- 09105522
- Availability:
- Ships Same Business Day
- Weight:
- 1.11 LBS
- DISPLACEMENT:
- 400 CC
- PISTON MATERIAL:
- FORGED
- TYPE:
- DUAL RING
- BORE - OVERSIZE METRIC:
- +1.50 MM
- ENGINE TYPE:
- 2-STROKE
- PISTON MATERIAL:
- ALUMINUM ALLOY
- PRODUCT NAME:
- PISTON KIT
- RIDING STYLE:
- ATV
- BORE - OVERSIZE:
- +1,50 MM
- BORE SIZE METRIC:
- 84.50 MM
- MODEL:
- STANDARD SERIES
- PISTON SIZE METRIC:
- 84.43 MM
- UNITS:
- KIT
MSRP: $152.00Now: $144.40Was: $152.00Qty in Cart: 0Quantity:Price:MSRP: $152.00Now: $144.40Was: $152.00Subtotal:
