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 Crankshaft Assembly for 2005-2013 Yamaha Raptor 350 WPC137
WISECO
$554.95Whether you're rebuilding a tired 350cc engine or pushing your Raptor's performance envelope, a quality crankshaft assembly is non-negotiable. The Wiseco WPC137 delivers factory-spec reliability with...09210145- SKU:
- 09210145
- Availability:
- Ships Same Business Day
- Weight:
- 13.51 LBS
- MATERIAL:
- STEEL
- RIDING STYLE:
- ATV
- UNITS:
- KIT
- PRODUCT NAME:
- CRANKSHAFT ASSEMBLY
- FEATURES:
- INCLUDES BEARING AND GASKET
- STROKE LENGTH METRIC:
- 64.50 MM
- TYPE:
- BOTTOM END
$554.95Qty in Cart: 0Quantity:Price:$554.95Subtotal: -
Wiseco Engine Rebuild Kit for 2001-2004 Honda TRX400EX PWR131A-870
WISECO
$844.95A complete engine rebuild demands precision components that won't compromise reliability when you need it most. This Wiseco kit delivers OEM-spec or better parts for the 400EX platform, eliminating...09031514- SKU:
- 09031514
- Availability:
- Ships Same Business Day
- Weight:
- 15.85 LBS
$844.95Qty in Cart: 0Quantity:Price:$844.95Subtotal: -
Wiseco Ring Set 66mm 1985-1988 Suzuki LT230S 1987-1996 Suzuki LT-4WD QuadRunner 250 2598XD
WISECO
$49.95Piston rings are critical to engine performance—they seal combustion pressure, regulate oil consumption, and directly impact horsepower and reliability. The Wiseco 2598XD ring set delivers precision...2598XD- SKU:
- 2598XD
- Availability:
- Ships Same Business Day
- Weight:
- 0.02 LBS
- PISTON MATERIAL:
- ALUMINUM
- DISPLACEMENT:
- 249 CC
- PRODUCT NAME:
- PISTON RING
- UNITS:
- SET
- BORE SIZE METRIC:
- 66.35 MM
- DISPLACEMENT:
- 229 CC
- RIDING STYLE:
- ATV
$49.95Qty in Cart: 0Quantity:Price:$49.95Subtotal: -
Wiseco 67mm Piston Ring Set for Honda ATC185 1980 1981-1983 ATC185S 1981-1983 ATC200 1984 ATC200S 1984-1986 TRX200 1983-2002 XR200R Kawasaki KLF220 Bayou 1988-2002 2638XC
WISECO
$49.95Worn or damaged piston rings directly reduce combustion efficiency, increase blow-by, and accelerate engine wear—making a quality ring set essential for reliable performance. The Wiseco 2638XC...2638XC- SKU:
- 2638XC
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- DISPLACEMENT:
- 191,8 CC
- PRODUCT NAME:
- PISTON RING
- PISTON MATERIAL:
- ALUMINUM
- RIDING STYLE:
- OFF-ROAD
- BORE SIZE METRIC:
- 67.00 MM
- RIDING STYLE:
- ATV
- UNITS:
- SET
$49.95Qty in Cart: 0Quantity:Price:$49.95Subtotal: -
Wiseco Piston Kit 67mm 9.3:1 Compression Kawasaki KLF220 Bayou 1988-2002 4670M06700
WISECO
$128.95If you're pushing your KLF220 Bayou harder than stock tolerances allow, a quality piston kit is non-negotiable—and the Wiseco 4670M06700 delivers the durability and precision you need for both trail...4670M06700- SKU:
- 4670M06700
- Availability:
- Ships Same Business Day
- Weight:
- 0.62 LBS
- BORE - OVERSIZE:
- STANDARD
- BORE - OVERSIZE METRIC:
- STANDARD
- BORE SIZE METRIC:
- 67.00 MM
- SKIRT COATING:
- NON-COATED
- STROKE LENGTH METRIC:
- 61.00 MM
- UNITS:
- KIT
- MODEL:
- FORGED SERIES
- COMPRESSION RATIO IMPERIAL:
- 9.3:1
- ENGINE TYPE:
- 4-STROKE
- PISTON DIAMETER METRIC:
- 66.95 MM
- RIDING STYLE:
- ATV
- DISPLACEMENT:
- 215 CC
- PISTON MATERIAL:
- FORGED 2618 ALUMINUM
- PRODUCT NAME:
- PISTON KIT
$128.95Qty in Cart: 0Quantity:Price:$128.95Subtotal: -
On Sale
Wossner Connecting Rod Yamaha YFS200 Blaster 1988-2006 P2030
WOSSNER
MSRP: $122.00Now: $115.90Was: $122.00If you're rebuilding your YFS200 Blaster engine, the connecting rod is a critical component that directly impacts power delivery, reliability, and longevity. Wössner's forged 8620 alloy construction...09230566- SKU:
- 09230566
- Availability:
- Ships Same Business Day
- Weight:
- 0.80 LBS
- ENGINE TYPE:
- 2-STROKE
- PRODUCT NAME:
- CONNECTING ROD KIT
- RIDING STYLE:
- ATV
- STYLE:
- STANDARD
- RIDING STYLE:
- STREET
- UNITS:
- KIT
MSRP: $122.00Now: $115.90Was: $122.00Qty in Cart: 0Quantity:Price:MSRP: $122.00Now: $115.90Was: $122.00Subtotal: -
On Sale
Wossner Piston Kit Yamaha YFS200 Blaster 1988-2006 8101D150
WOSSNER
MSRP: $122.00Now: $115.90Was: $122.00A worn or damaged piston directly compromises engine compression, throttle response, and overall reliability—especially critical in 2-stroke applications where piston integrity is non-negotiable. The...09105529- SKU:
- 09105529
- Availability:
- Ships Same Business Day
- Weight:
- 0.71 LBS
- BORE - OVERSIZE:
- +1,50 MM
- BORE SIZE METRIC:
- 67.50 MM
- DISPLACEMENT:
- 195 CC
- ENGINE TYPE:
- 2-STROKE
- RIDING STYLE:
- ATV
- UNITS:
- KIT
- PISTON MATERIAL:
- ALUMINUM ALLOY
- PISTON MATERIAL:
- FORGED
- BORE - OVERSIZE METRIC:
- +1.50 MM
- MODEL:
- STANDARD SERIES
- PISTON SIZE METRIC:
- 67.44 MM
- 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 Yamaha YFS200 Blaster 1988-2006 Piston Kit 8101D200
WOSSNER
MSRP: $122.00Now: $115.90Was: $122.00The Wossner 8101D200 piston kit restores your YFS200 Blaster to factory specifications or serves as a reliable upgrade path for higher-load riding. With 4032 T6 forged aluminum and a permanent skirt...09105530- SKU:
- 09105530
- Availability:
- Ships Same Business Day
- Weight:
- 0.70 LBS
- BORE - OVERSIZE:
- +2,00 MM
- BORE - OVERSIZE METRIC:
- +2.00 MM
- BORE SIZE METRIC:
- 68.00 MM
- DISPLACEMENT:
- 195 CC
- ENGINE TYPE:
- 2-STROKE
- RIDING STYLE:
- ATV
- UNITS:
- KIT
- PISTON MATERIAL:
- ALUMINUM ALLOY
- PISTON MATERIAL:
- FORGED
- PISTON SIZE METRIC:
- 67.94 MM
- TYPE:
- DUAL RING
- MODEL:
- STANDARD SERIES
- PRODUCT NAME:
- PISTON KIT
MSRP: $122.00Now: $115.90Was: $122.00Qty in Cart: 0Quantity:Price:MSRP: $122.00Now: $115.90Was: $122.00Subtotal: -
HOT RODS Seal Output Shaft OSK0044
HOT RODS
$35.95Countershaft seal leaks can compromise your transmission fluid, accelerate wear on internal components, and sideline your bike at the worst possible time. The HOT RODS Seal Output Shaft kit...09350556- SKU:
- 09350556
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
- APPLICATION:
- COUNTERSHAFT
- APPLICATION:
- TRANSMISSION
- PRODUCT NAME:
- SEAL
- RIDING STYLE:
- ATV
- UNITS:
- KIT
$35.95Qty in Cart: 0Quantity:Price:$35.95Subtotal: -
HOT RODS Seal Output Shaft OSK0045
HOT RODS
$35.95Countershaft seal leaks compromise transmission integrity and can lead to catastrophic drivetrain failure if left unaddressed. The HOT RODS Seal Output Shaft kit delivers everything needed to...09350557- SKU:
- 09350557
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- PRODUCT NAME:
- SEAL
- RIDING STYLE:
- ATV
- UNITS:
- KIT
- APPLICATION:
- COUNTERSHAFT
- APPLICATION:
- TRANSMISSION
$35.95Qty in Cart: 0Quantity:Price:$35.95Subtotal: -
HOT RODS Crankshaft Bearings HR00024
HOT RODS
$176.95Worn crankshaft bearings compromise engine reliability and can lead to catastrophic failure if left unchecked. The HOT RODS HR00024 main bearing and seal kit restores proper clearances and oil film...09240598- SKU:
- 09240598
- Availability:
- Ships Same Business Day
- Weight:
- 0.40 LBS
- PRODUCT NAME:
- BEARING
- UNITS:
- KIT
- TYPE:
- ENGINE
- APPLICATION:
- CRANKSHAFT
- RIDING STYLE:
- UTV
$176.95 -
HOT RODS Connecting Rod 8708
HOT RODS
$203.95If you're building a high-rpm engine or rebuilding a tired block, your connecting rods are critical to reliability and longevity. The HOT RODS 8708 delivers the strength and precision engineering...09230376- SKU:
- 09230376
- Availability:
- Ships Same Business Day
- Weight:
- 1.55 LBS
- PRODUCT NAME:
- CONNECTING ROD KIT
- RIDING STYLE:
- ATV
- UNITS:
- KIT
- ENGINE TYPE:
- 4-CYCLE
- MATERIAL:
- 8620 STEEL
- STYLE:
- HEAVY DUTY
$203.95 -
HOT RODS Crankshaft - Stroker 4186
HOT RODS
$364.95If you're serious about maximizing displacement and low-end torque in your four-stroke ATV, a stroker crankshaft is one of the most effective bolt-on upgrades available. The HOT RODS 4186 Stroker...09210429- SKU:
- 09210429
- Availability:
- Ships Same Business Day
- Weight:
- 9.45 LBS
- COLOR/FINISH:
- STEEL
- PRODUCT NAME:
- CRANKSHAFT ASSEMBLY
- RIDING STYLE:
- ATV
- STROKE LENGTH METRIC:
- 65.10 MM
- MODEL:
- 4-CYCLE
- STROKE LENGTH:
- 65,10 MM
- UNITS:
- ASSEMBLY
- DISPLACEMENT:
- 471 CC
- TYPE:
- STROKER
- FEATURES:
- HEAVY DUTY CRANKSHAFT
- MATERIAL:
- 4140 STEEL
$364.95Qty in Cart: 0Quantity:Price:$364.95Subtotal: -
HOT RODS Crankshaft Assembly 4059
HOT RODS
$588.95If you're building a high-performance long-stroke engine for your ATV, you need a crankshaft assembly that's been engineered to handle sustained power delivery without compromise. The HOT RODS...09210033- SKU:
- 09210033
- Availability:
- Ships Same Business Day
- Weight:
- 9.81 LBS
- FEATURES:
- HEAVY DUTY CRANKSHAFT
- MATERIAL:
- 4140 STEEL
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- STROKE LENGTH METRIC:
- 62.60 MM
- UNITS:
- ASSEMBLY
- MODEL:
- 4-CYCLE
- RIDING STYLE:
- ATV
- COLOR/FINISH:
- STEEL
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- OEM STROKE
- DISPLACEMENT:
- 400 CC
- PRODUCT NAME:
- CRANKSHAFT ASSEMBLY
$588.95Qty in Cart: 0Quantity:Price:$588.95Subtotal: -
Wiseco Piston Kit 81mm Bore 10.25:1 Compression for 1985-1986 Honda ATC350X PK1015
WISECO
$250.95If you're running a 1985-1986 Honda ATC350X, factory pistons are a limiting factor in reliability and peak performance—especially if you're pushing RPMs or operating in sustained high-temperature...09030317- SKU:
- 09030317
- Availability:
- Ships Same Business Day
- Weight:
- 2.05 LBS
- PISTON DIAMETER METRIC:
- 80.95 MM
- RIDING STYLE:
- OFF-ROAD
- SKIRT COATING:
- NON-COATED
- UNITS:
- KIT
- BORE SIZE METRIC:
- 81.00 MM
- DISPLACEMENT:
- 350.4 CC
- MODEL:
- FORGED SERIES
- PRODUCT NAME:
- REBUILD KIT
- STROKE LENGTH METRIC:
- 68.00 MM
- TYPE:
- TOP END
- COMPRESSION RATIO IMPERIAL:
- 10.25:1
- BORE - OVERSIZE:
- STANDARD
- BORE - OVERSIZE METRIC:
- STANDARD
- ENGINE TYPE:
- 4-STROKE
- PISTON MATERIAL:
- 2618 ALUMINUM ALLOY
- RIDING STYLE:
- ATV
$250.95 -
Wiseco Ring Set 81.50mm Honda ATC350X 1985-1986 3208XG
WISECO
$49.95When you're rebuilding or refreshing your Honda ATC350X engine, ring quality directly impacts compression, blow-by control, and overall reliability under load. The Wiseco 3208XG ring set delivers...3208XG- SKU:
- 3208XG
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- RIDING STYLE:
- ATV
- PISTON MATERIAL:
- ALUMINUM
- RIDING STYLE:
- OFF-ROAD
- BORE SIZE METRIC:
- 81.50 MM
- PRODUCT NAME:
- PISTON RING
- UNITS:
- SET
$49.95Qty in Cart: 0Quantity:Price:$49.95Subtotal: -
Wiseco Piston Kit 83.25mm for Polaris Sportsman 400 4x4 1994-2005 PK1107
WISECO
$239.95A top-end rebuild is the foundation of reliable engine performance, and this Wiseco Piston Kit delivers everything needed for a complete, dependable restoration. The high-silicone forged construction...09030459- SKU:
- 09030459
- Availability:
- Ships Same Business Day
- Weight:
- 1.80 LBS
- PISTON DIAMETER METRIC:
- 83.17 MM
- PISTON MATERIAL:
- 4032 ALUMINUM ALLOY
- RIDING STYLE:
- ATV
- STROKE LENGTH METRIC:
- 70.00 MM
- TYPE:
- TOP END
- BORE - OVERSIZE METRIC:
- +0.25 MM
- SKIRT COATING:
- NON-COATED
- UNITS:
- KIT
- BORE - OVERSIZE:
- +0,25 MM
- DISPLACEMENT:
- 400 CC
- ENGINE TYPE:
- 2-STROKE
- PRODUCT NAME:
- REBUILD KIT
- BORE SIZE METRIC:
- 83.25 MM
- MODEL:
- FORGED SERIES
$239.95Qty in Cart: 0Quantity:Price:$239.95Subtotal: -
Wiseco Piston Kit 69mm 8.9:1 Compression for 1998-2005 Arctic Cat 300 and 1999-2002 Suzuki LT-F300F 4673M06900
WISECO
$194.95When you're pushing your Arctic Cat 300 or Suzuki LT-F300F to the limit, your factory piston becomes a bottleneck. The Wiseco 4673M06900 delivers the durability and efficiency you need to run...4673M06900- SKU:
- 4673M06900
- Availability:
- Ships Same Business Day
- Weight:
- 0.65 LBS
- PISTON DIAMETER METRIC:
- 68.95 MM
- STROKE LENGTH METRIC:
- 76.00 MM
- BORE - OVERSIZE:
- +0,50 MM
- BORE - OVERSIZE METRIC:
- +0.50 MM
- BORE SIZE METRIC:
- 69.00 MM
- UNITS:
- KIT
- COMPRESSION RATIO IMPERIAL:
- 8.9:1
- PISTON MATERIAL:
- FORGED 2618 ALUMINUM
- DISPLACEMENT:
- 280 CC
- ENGINE TYPE:
- 4-STROKE
- MODEL:
- FORGED SERIES
- PRODUCT NAME:
- PISTON KIT
- RIDING STYLE:
- ATV
- SKIRT COATING:
- NON-COATED
$194.95Qty in Cart: 0Quantity:Price:$194.95Subtotal: -
HOT RODS Crankshaft Assembly 4027
HOT RODS
$420.95If you're building a long-stroke engine for your ATV, you need a crankshaft assembly engineered specifically for the job—not a compromised adaptation. The HOT RODS Crankshaft Assembly 4027 arrives...H120- SKU:
- H120
- Availability:
- Ships Same Business Day
- Weight:
- 8.50 LBS
- DISPLACEMENT:
- 250 CC
- MODEL:
- 2-CYCLE
- RIDING STYLE:
- ATV
- STROKE LENGTH METRIC:
- 70.00 MM
- MATERIAL:
- 4140 STEEL
- UNITS:
- ASSEMBLY
- FEATURES:
- STANDARD CRANKSHAFT
- TYPE:
- OEM STROKE
- COLOR/FINISH:
- STEEL
- PRODUCT NAME:
- CRANKSHAFT ASSEMBLY
$420.95Qty in Cart: 0Quantity:Price:$420.95Subtotal: -
On Sale
DID Cam Chain 25H98
DID
MSRP: $29.50Now: $25.08Was: $29.50A cam chain is critical to your engine's valve timing accuracy—any slack or wear translates directly to performance loss and potential catastrophic damage at high RPM. The DID Cam Chain 25H98...D25H98- SKU:
- D25H98
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
- TYPE:
- CAM
- UNITS:
- EACH
- MODEL:
- ROLLER
- NUMBER OF LINKS:
- 98
- CHAIN SIZE:
- 25H
- PRODUCT NAME:
- CHAIN
- RIDING STYLE:
- ATV
MSRP: $29.50Now: $25.08Was: $29.50Qty in Cart: 0Quantity:Price:MSRP: $29.50Now: $25.08Was: $29.50Subtotal:
