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
-
On Sale
PROX Piston Kit 01.2660.100
PROX
MSRP: $139.95Now: $119.00Was: $139.95When your engine demands reliability at high RPM, OEM-spec pistons are non-negotiable. The PROX Piston Kit 01.2660.100 delivers factory-engineered performance with the precision tolerances required for sustained power delivery and durability. This...PX4674- SKU:
- PX4674
- Availability:
- Ships Same Business Day
- Weight:
- 1.38 LBS
- BORE SIZE METRIC:
- 101.00 MM
- RIDING STYLE:
- UTV
- PISTON MATERIAL:
- ALUMINUM ALLOY
- ENGINE TYPE:
- 4-STROKE
- PISTON SIZE METRIC:
- +1.00 MM
- PRODUCT NAME:
- PISTON KIT
- RIDING STYLE:
- ATV
- UNITS:
- EACH
- PISTON DIAMETER METRIC:
- 101.00 MM
MSRP: $139.95Now: $119.00Was: $139.95Qty in Cart: 0Quantity:Price:MSRP: $139.95Now: $119.00Was: $139.95Subtotal: -
On Sale
PROX Piston Kit 01.1495.000
PROX
MSRP: $155.95Now: $119.00Was: $155.95When your engine demands precision and reliability, OEM-equivalent performance is non-negotiable. The PROX Piston Kit 01.1495.000 delivers factory-spec durability with CNC-machined accuracy, ensuring consistent combustion and extended engine life...PX2500- SKU:
- PX2500
- Availability:
- Ships Same Business Day
- Weight:
- 0.98 LBS
- BORE SIZE METRIC:
- 85.00 MM
- PISTON SIZE METRIC:
- STANDARD
- ENGINE TYPE:
- 4-STROKE
- PISTON DIAMETER METRIC:
- 85.00 MM
- PISTON MATERIAL:
- ALUMINUM ALLOY
- RIDING STYLE:
- ATV
- UNITS:
- EACH
- RIDING STYLE:
- OFF-ROAD
- PRODUCT NAME:
- PISTON KIT
MSRP: $155.95Now: $119.00Was: $155.95 -
On Sale
PROX Piston Kit 01.1495.025
PROX
MSRP: $155.95Now: $119.00Was: $155.95Whether you're rebuilding after high-mileage wear or restoring a race engine to factory specifications, the PROX Piston Kit 01.1495.025 delivers the precision and durability that serious engine builders depend on. Cast from high-silicon-content aluminum...PX2501- SKU:
- PX2501
- Availability:
- Ships Same Business Day
- Weight:
- 0.98 LBS
- BORE SIZE METRIC:
- 85.25 MM
- PISTON DIAMETER METRIC:
- 85.25 MM
- PRODUCT NAME:
- PISTON KIT
- RIDING STYLE:
- OFF-ROAD
- PISTON SIZE IMPERIAL:
- +0.010'
- ENGINE TYPE:
- 4-STROKE
- PISTON MATERIAL:
- ALUMINUM ALLOY
- RIDING STYLE:
- ATV
- UNITS:
- EACH
MSRP: $155.95Now: $119.00Was: $155.95 -
On Sale
PROX Piston Kit 01.2020.050
PROX
MSRP: $121.95Now: $85.00Was: $121.95OEM-equivalent piston performance demands precision engineering and materials that can withstand extreme combustion pressures without compromise. The PROX Piston Kit 01.2020.050 delivers exactly that—Japanese-manufactured pistons cast from high-silicon...PX4192- SKU:
- PX4192
- Availability:
- Ships Same Business Day
- Weight:
- 0.63 LBS
- PISTON SIZE METRIC:
- +0.50 MM
- RIDING STYLE:
- STREET
- BORE SIZE METRIC:
- 64.50 MM
- ENGINE TYPE:
- 2-STROKE
- PISTON MATERIAL:
- ALUMINUM ALLOY
- PRODUCT NAME:
- PISTON KIT
- RIDING STYLE:
- ATV
- UNITS:
- EACH
- PISTON DIAMETER METRIC:
- 64.50 MM
MSRP: $121.95Now: $85.00Was: $121.95 -
On Sale
PROX Exhaust Valve 28.2661-1
PROX
MSRP: $40.95Now: $34.00Was: $40.95Precision exhaust valve performance directly impacts combustion efficiency, cylinder sealing, and overall engine reliability. The PROX 28.2661-1 is engineered to OEM specifications, ensuring consistent valve lift, seating, and thermal stability under...09260684- SKU:
- 09260684
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
- MATERIAL:
- STEEL
- PRODUCT NAME:
- VALVE
- RIDING STYLE:
- ATV
- UNITS:
- EACH
- APPLICATION:
- EXHAUST
MSRP: $40.95Now: $34.00Was: $40.95 -
On Sale
PROX Top End Gasket Kit - Warrior/Raptor/Grizzly 35.2160
PROX
MSRP: $46.95Now: $38.00Was: $46.95A properly sealed top end is non-negotiable for engine reliability and performance. Over time, factory gaskets degrade from heat cycling and compression, leading to oil leaks, vacuum leaks, and potential engine damage. The PROX Top End Gasket Kit...09347124- SKU:
- 09347124
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- PRODUCT NAME:
- GASKET KIT
- RIDING STYLE:
- ATV
- UNITS:
- KIT
- TYPE:
- TOP END
MSRP: $46.95Now: $38.00Was: $46.95 -
Rekluse Clutch Cover KTM 450 SX-F 2007-2012 RMS-330
REKLUSE
$189.00Stock clutch covers crack under sustained trail abuse—and when they do, you're looking at oil loss and potential engine damage. The Rekluse RMS-330 replaces that weak point with billet aluminum that absorbs impacts from rocks and logs without...09401793- SKU:
- 09401793
- Availability:
- Ships Same Business Day
- Weight:
- 1.00 LBS
- PRODUCT NAME:
- COVER
- UNITS:
- EACH
- COLOR/FINISH:
- ANODIZED
- COLOR/FINISH:
- BLACK
- MATERIAL:
- BILLET ALUMINUM
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- CLUTCH
$189.00 -
Hiflofiltro Oil Filter for Honda CBF125 2009-2015 HF113
HIFLOFILTRO
$3.92A quality oil filter is essential to engine longevity, and the HIFLOFILTRO HF113 delivers the filtration efficiency your Honda CBF125 needs to maintain peak performance across all riding conditions. This filter meets or exceeds OEM specifications,...HF113- SKU:
- HF113
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- BASE COLOR:
- RED
- COLOR/FINISH:
- SILVER
- PRODUCT NAME:
- OIL FILTER
- RIDING STYLE:
- UTV
- WIDTH METRIC:
- 50 MM
- COLOR/FINISH:
- RED
- LENGTH METRIC:
- 38 MM
- RIDING STYLE:
- ATV
- TYPE:
- CARTRIDGE
- UNITS:
- EACH
- STYLE:
- PREMIUM
$3.92 -
Hiflofiltro Oil Filter for Yamaha YFM660R Raptor 2001-2005 and Yamaha YFM700 Grizzly 2016 HF147
HIFLOFILTRO
$8.68Keep your Yamaha ATV's engine protected with proper filtration—the HF147 traps contaminants before they cause wear and degradation. Running a quality oil filter directly impacts engine longevity and performance, especially in the demanding conditions...HF147- SKU:
- HF147
- Availability:
- Ships Same Business Day
- Weight:
- 0.46 LBS
- BASE COLOR:
- BLACK
- RIDING STYLE:
- ATV
- STYLE:
- PREMIUM
- UNITS:
- EACH
- PRODUCT NAME:
- OIL FILTER
- TYPE:
- SPIN-ON
- LENGTH METRIC:
- 50 MM
- WIDTH METRIC:
- 68 MM
- COLOR/FINISH:
- BLACK
- RIDING STYLE:
- STREET
- RIDING STYLE:
- UTV
$8.68 -
Hiflofiltro Oil Filter for Polaris RZR XP 900 2011-2012 HF199
HIFLOFILTRO
$9.37Keep your Polaris RZR XP 900's engine protected with the HIFLOFILTRO HF199 oil filter, engineered to trap contaminants and maintain optimal oil flow under demanding riding conditions. Quality filtration directly extends engine life and maintains...07120301- SKU:
- 07120301
- Availability:
- Ships Same Business Day
- Weight:
- 0.51 LBS
- PRODUCT NAME:
- OIL FILTER
- TYPE:
- SPIN-ON
- BASE COLOR:
- BLACK
- RIDING STYLE:
- ATV
- STYLE:
- PREMIUM
- UNITS:
- EACH
- COLOR/FINISH:
- BLACK
- LENGTH METRIC:
- 77 MM
- WIDTH METRIC:
- 65 MM
$9.37 -
HIFLOFILTRO Oil Filter HF142
HIFLOFILTRO
$8.29A quality oil filter is non-negotiable for engine longevity, especially in high-performance and racing applications where oil degradation accelerates under sustained load. The HIFLOFILTRO HF142 delivers superior filtration and flow characteristics,...HF142- SKU:
- HF142
- Availability:
- Ships Same Business Day
- Weight:
- 0.09 LBS
- PRODUCT NAME:
- OIL FILTER
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- COLOR/FINISH:
- YELLOW
- TYPE:
- CARTRIDGE
- BASE COLOR:
- YELLOW
- STYLE:
- PREMIUM
- WIDTH METRIC:
- 38 MM
- LENGTH METRIC:
- 45 MM
- RIDING STYLE:
- ATV
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
$8.29 -
VERTEX Piston Kit - Standard VTK22568
VERTEX
$459.95A quality piston kit is the foundation of reliable engine performance, and the VERTEX Standard VTK22568 delivers the durability and precision needed for both street and circuit applications. This kit combines advanced heat treatment with a specialized...09102994- SKU:
- 09102994
- Availability:
- Ships Same Business Day
- Weight:
- 2.10 LBS
- PISTON MATERIAL:
- CAST
- PRODUCT NAME:
- TOP END PISTON KIT
- UNITS:
- KIT
- CYLINDER DIAMETER METRIC:
- 64.00 MM
- COMPRESSION RATIO IMPERIAL:
- STANDARD
- STYLE:
- CAST REPLICA
- BORE - OVERSIZE:
- STANDARD
- BORE - OVERSIZE METRIC:
- STANDARD
- COMPRESSION RATIO:
- STANDARD
- DISPLACEMENT:
- 350 CC
- ENGINE TYPE:
- 2-STROKE
- PISTON DIAMETER METRIC:
- 63.95 MM
- PISTON MATERIAL:
- ALUMINUM ALLOY
- RIDING STYLE:
- ATV
- SKIRT COATING:
- MOLYBDENUM DISULPHITE
$459.95Qty in Cart: 0Quantity:Price:$459.95Subtotal: -
VERTEX Piston Kit VTK22568050
VERTEX
$412.95High-performance pistons are critical to engine reliability and power output, especially under sustained boost or high RPM conditions. The VERTEX Piston Kit VTK22568050 combines precision engineering with proven durability coatings to maximize ring seal,...09102996- SKU:
- 09102996
- Availability:
- Ships Same Business Day
- Weight:
- 2.25 LBS
- BORE - OVERSIZE METRIC:
- +0.50 MM
- PISTON DIAMETER METRIC:
- 64.45 MM
- PISTON MATERIAL:
- CAST
- UNITS:
- KIT
- ENGINE TYPE:
- 2-STROKE
- BORE - OVERSIZE:
- +0,50 MM
- COMPRESSION RATIO IMPERIAL:
- STANDARD
- CYLINDER DIAMETER METRIC:
- 64.50 MM
- PRODUCT NAME:
- TOP END PISTON KIT
- STYLE:
- CAST REPLICA
- COMPRESSION RATIO:
- STANDARD
- DISPLACEMENT:
- 350 CC
- PISTON MATERIAL:
- ALUMINUM ALLOY
- RIDING STYLE:
- ATV
- SKIRT COATING:
- MOLYBDENUM DISULPHITE
$412.95 -
VERTEX Piston Kit VTK22568100
VERTEX
$400.95VERTEX pistons are engineered for extreme durability under sustained high-RPM stress, making them the choice for serious racers and built engines pushing maximum output. The proprietary T-5 heat treatment cycle ensures consistent strength across full...09102998- SKU:
- 09102998
- Availability:
- Ships Same Business Day
- Weight:
- 2.25 LBS
- COMPRESSION RATIO IMPERIAL:
- STANDARD
- ENGINE TYPE:
- 2-STROKE
- STYLE:
- CAST REPLICA
- BORE - OVERSIZE METRIC:
- +1.00 MM
- COMPRESSION RATIO:
- STANDARD
- PISTON MATERIAL:
- ALUMINUM ALLOY
- PISTON MATERIAL:
- CAST
- RIDING STYLE:
- ATV
- SKIRT COATING:
- MOLYBDENUM DISULPHITE
- UNITS:
- KIT
- BORE - OVERSIZE:
- +1,00 MM
- CYLINDER DIAMETER METRIC:
- 65.00 MM
- DISPLACEMENT:
- 350 CC
- PISTON DIAMETER METRIC:
- 64.95 MM
- PRODUCT NAME:
- TOP END PISTON KIT
$400.95 -
VERTEX Piston Kit VTK22568150
VERTEX
$412.95VERTEX pistons are engineered for serious builders who demand reliability under extreme combustion pressures and sustained high RPM operation. The T-5 heat treatment cycle delivers exceptional hardness and fatigue resistance, while the Molybdenum...09102999- SKU:
- 09102999
- Availability:
- Ships Same Business Day
- Weight:
- 2.40 LBS
- COMPRESSION RATIO:
- STANDARD
- DISPLACEMENT:
- 350 CC
- ENGINE TYPE:
- 2-STROKE
- PISTON MATERIAL:
- ALUMINUM ALLOY
- RIDING STYLE:
- ATV
- SKIRT COATING:
- MOLYBDENUM DISULPHITE
- STYLE:
- CAST REPLICA
- BORE - OVERSIZE:
- +1,50 MM
- COMPRESSION RATIO IMPERIAL:
- STANDARD
- CYLINDER DIAMETER METRIC:
- 65.50 MM
- PISTON DIAMETER METRIC:
- 65.45 MM
- BORE - OVERSIZE METRIC:
- +1.50 MM
- PISTON MATERIAL:
- CAST
- PRODUCT NAME:
- TOP END PISTON KIT
- UNITS:
- KIT
$412.95Qty in Cart: 0Quantity:Price:$412.95Subtotal: -
VERTEX Piston Kit VTK22568200
VERTEX
$412.95Precision-engineered pistons are the foundation of reliable high-RPM performance, and the VERTEX Piston Kit VTK22568200 delivers the durability you need for sustained power delivery. Whether you're building a competition engine or refreshing a...09103000- SKU:
- 09103000
- Availability:
- Ships Same Business Day
- Weight:
- 2.40 LBS
- BORE - OVERSIZE METRIC:
- +2.00 MM
- COMPRESSION RATIO IMPERIAL:
- STANDARD
- DISPLACEMENT:
- 350 CC
- ENGINE TYPE:
- 2-STROKE
- RIDING STYLE:
- ATV
- STYLE:
- CAST REPLICA
- CYLINDER DIAMETER METRIC:
- 66.00 MM
- BORE - OVERSIZE:
- +2,00 MM
- COMPRESSION RATIO:
- STANDARD
- PISTON MATERIAL:
- ALUMINUM ALLOY
- PISTON MATERIAL:
- CAST
- SKIRT COATING:
- MOLYBDENUM DISULPHITE
- UNITS:
- KIT
- PISTON DIAMETER METRIC:
- 65.95 MM
- PRODUCT NAME:
- TOP END PISTON KIT
$412.95 -
VERTEX Piston Kit - Standard VTK22569
VERTEX
$242.95Pistons are the hardworking heart of your engine's combustion chamber, and their durability directly impacts your power output and engine longevity. The VERTEX Piston Kit VTK22569 delivers precision engineering with proprietary heat treatment and skirt...09103007- SKU:
- 09103007
- Availability:
- Ships Same Business Day
- Weight:
- 1.15 LBS
- PISTON DIAMETER METRIC:
- 65.95 MM
- PRODUCT NAME:
- TOP END PISTON KIT
- CYLINDER DIAMETER METRIC:
- 66.00 MM
- DISPLACEMENT:
- 195 CC
- PISTON MATERIAL:
- ALUMINUM ALLOY
- PISTON MATERIAL:
- CAST
- RIDING STYLE:
- ATV
- SKIRT COATING:
- MOLYBDENUM DISULPHITE
- UNITS:
- KIT
- COMPRESSION RATIO IMPERIAL:
- STANDARD
- ENGINE TYPE:
- 2-STROKE
- STYLE:
- CAST REPLICA
$242.95Qty in Cart: 0Quantity:Price:$242.95Subtotal: -
VERTEX Wrist Pin 715408
VERTEX
$22.95Wrist pin failure can cost you races and credibility—especially when you're pushing your engine to the limit. The VERTEX 715408 Wrist Pin delivers the wear resistance and durability that high-performance engines demand, with a nitride-coated surface that...09130108- SKU:
- 09130108
- Availability:
- Ships Same Business Day
- Weight:
- 0.24 LBS
- APPLICATION:
- PISTON
- PRODUCT NAME:
- WRIST PIN
- RIDING STYLE:
- ATV
- UNITS:
- EACH
$22.95 -
VERTEX Piston Circlips 72100K
VERTEX
$3.95Piston circlips are critical retention components that keep your piston rings seated and functioning under extreme combustion pressures. Using OEM-specification replacements ensures proper ring sealing, prevents blowby, and maintains the compression...09130114- SKU:
- 09130114
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- APPLICATION:
- PISTON
- PRODUCT NAME:
- CIRCLIP
- RIDING STYLE:
- ATV
- UNITS:
- EACH
$3.95Qty in Cart: 0Quantity:Price:$3.95Subtotal: -
VERTEX Ring Set 590390000001
VERTEX
$75.95Piston rings are the critical seal between your piston and cylinder wall—worn rings compromise compression, increase blow-by, and rob your engine of power. The VERTEX Ring Set 590390000001 delivers OEM-grade durability with nitride coating or chrome...09120236- SKU:
- 09120236
- Availability:
- Ships Same Business Day
- Weight:
- 0.07 LBS
- PISTON DIAMETER METRIC:
- 89.96 MM
- RIDING STYLE:
- ATV
- PRODUCT NAME:
- PISTON RING
- UNITS:
- SET
$75.95
