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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JE PISTONS Piston Kit 379449
JE PISTONS
$774.99When you're pushing an engine to its limits in competition, your pistons need to handle extreme pressures and temperatures without compromise. JE Pistons' 379449 kit delivers the material science and...09106527- SKU:
- 09106527
- Availability:
- Ships Same Business Day
- Weight:
- 2.81 LBS
$774.99 -
JE PISTONS Piston Kit 379457
JE PISTONS
$716.20When you're pushing an engine to its limits in competition, piston reliability becomes non-negotiable. The JE PISTONS 379457 Kit delivers the structural integrity and precision engineering required...09106532- SKU:
- 09106532
- Availability:
- Ships Same Business Day
- Weight:
- 3.36 LBS
$716.20Qty in Cart: 0Quantity:Price:$716.20Subtotal: -
QUAD LOGIC Cam Chain Tensioner 100-3388-PU
QUAD LOGIC
$139.95OEM cam chain tensioners are prone to slack, resulting in startup noise and timing drift that compounds over time. The QUAD LOGIC Cam Chain Tensioner 100-3388-PU maintains consistent tension under...09251485- SKU:
- 09251485
- Availability:
- Ships Same Business Day
- Weight:
- 0.60 LBS
$139.95Qty in Cart: 0Quantity:Price:$139.95Subtotal: -
Cylinder Works Standard Bore Cylinder Kit 93mm Bore 9:1 Compression Polaris RZR XP Turbo 2016 CW60008K01
CYLINDER WORKS
$1,054.15If you're running a Polaris RZR XP Turbo, a worn or damaged cylinder limits your engine's potential and reliability. This Cylinder Works kit delivers a bolt-on solution that restores—or exceeds—OEM...09311121- SKU:
- 09311121
- Availability:
- Ships Same Business Day
- Weight:
- 10.60 LBS
$1,054.15 -
Cylinder Works 92mm Standard Bore Cylinder for Kawasaki KRX 1000 Teryx 2020-2023 CW30015
CYLINDER WORKS
$567.95If your Kawasaki KRX 1000 or Teryx is showing signs of cylinder wear—loss of compression, increased blow-by, or declining performance—a factory-spec replacement is your most reliable path back to...09311119- SKU:
- 09311119
- Availability:
- Ships Same Business Day
- Weight:
- 8.80 LBS
$567.95Qty in Cart: 0Quantity:Price:$567.95Subtotal: -
Cylinder Works High Compression Cylinder Kit 102mm Yamaha YFM700R Raptor 2006-2014 20004-K01HC
CYLINDER WORKS
$895.95When your YFM700R's original cylinder shows wear, compression loss directly impacts throttle response and peak power output. This Cylinder Works High Compression Kit restores full performance while...09310305- SKU:
- 09310305
- Availability:
- Ships Same Business Day
- Weight:
- 8.39 LBS
$895.95 -
On Sale
Wossner Piston Kit 79.95mm Yamaha YXZ1000R 2016-2023 K4048DA-3
WOSSNER
MSRP: $736.00Now: $699.20Was: $736.00The Wossner K4048DA-3 Piston Kit delivers the precision engineering required to maximize power output and engine longevity in your Yamaha YXZ1000R. Whether you're pushing limits on the track or...09106647- SKU:
- 09106647
- Availability:
- Ships Same Business Day
- Weight:
- 2.70 LBS
MSRP: $736.00Now: $699.20Was: $736.00 -
On Sale
Wossner Piston Kit 79.95mm Yamaha YXZ1000R 2016-2025 K8978DA-3
WOSSNER
MSRP: $776.00Now: $737.20Was: $776.00If you're pushing your YXZ1000R to its limits, your factory pistons are holding you back. The Wossner K8978DA-3 kit delivers measurable gains in responsiveness, reliability, and engine longevity...09106648- SKU:
- 09106648
- Availability:
- Ships Same Business Day
- Weight:
- 0.01 LBS
MSRP: $776.00Now: $737.20Was: $776.00 -
MOOSE UTILITY One-Way Starter Bearing - Polaris 11-938
MOOSE UTILITY
$100.95A worn or failing starter bearing can compromise your entire starting system, leaving you stranded when you need reliability most. The MOOSE UTILITY One-Way Starter Bearing restores OEM-specification...09240695- SKU:
- 09240695
- Availability:
- Ships Same Business Day
- Weight:
- 0.21 LBS
$100.95 -
T.M. DESIGNWORKS Case Saver - Red - Honda HCS-ESM-RD
T.M. DESIGNWORKS
$42.95Chain derailment can spell disaster for your engine case, especially under hard acceleration or aggressive riding conditions. The T.M. DESIGNWORKS Case Saver combines lightweight impact absorption...09501009- SKU:
- 09501009
- Availability:
- Ships Same Business Day
- Weight:
- 0.50 LBS
$42.95 -
T.M. DESIGNWORKS Case Saver - Red - Honda HCS-TRX-RD
T.M. DESIGNWORKS
$42.95Chain derailment can happen in seconds and leave your engine case severely damaged—a costly mistake on the track or trail. The T.M. DESIGNWORKS Case Saver combines proven impact absorption with a...09501011- SKU:
- 09501011
- Availability:
- Ships Same Business Day
- Weight:
- 0.50 LBS
$42.95 -
T.M. DESIGNWORKS Case Saver/Sprocket Cover - Blue - Yamaha YCC-YFZ-BU
T.M. DESIGNWORKS
$64.95Chain derailment is one of the most damaging failures you can experience on the track or trail—and a case saver isn't optional if you're serious about protecting your investment. T.M. DESIGNWORKS...09501022- SKU:
- 09501022
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
$64.95 -
T.M. DESIGNWORKS Case Saver/Sprocket Cover - Black - Yamaha YCC-YZR-BK
T.M. DESIGNWORKS
$64.95Engine case damage from chain derailment or impact can sideline your bike and drain your wallet—the T.M. DESIGNWORKS Case Saver eliminates that risk with proven protection. This FIM-approved...09501023- SKU:
- 09501023
- Availability:
- Ships Same Business Day
- Weight:
- 0.36 LBS
$64.95 -
T.M. DESIGNWORKS Case Saver - Black - Honda HCS-ESM-BK
T.M. DESIGNWORKS
$42.95Chain derailment can happen in milliseconds—leaving your engine case vulnerable to catastrophic damage. The T.M. Designworks Case Saver shields your powerplant with composite-machined protection...09501008- SKU:
- 09501008
- Availability:
- Ships Same Business Day
- Weight:
- 0.50 LBS
$42.95 -
T.M. DESIGNWORKS Case Saver - Black - Honda HCS-TRX-BK
T.M. DESIGNWORKS
$42.95Chain derailment can happen in a split second, leaving your engine case cracked and your ride sidelined. The T.M. DESIGNWORKS Case Saver absorbs the impact that could otherwise mean costly repairs or...09501010- SKU:
- 09501010
- Availability:
- Ships Same Business Day
- Weight:
- 0.50 LBS
$42.95 -
T.M. DESIGNWORKS Case Saver - Black - Yamaha YCS-BAN-BK
T.M. DESIGNWORKS
$68.95Engine case damage from chain derailment can sideline your bike and drain your wallet fast. T.M. DESIGNWORKS Case Saver delivers proven protection trusted by championship-winning race teams, using a...09501013- SKU:
- 09501013
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
$68.95 -
T.M. DESIGNWORKS Case Saver - Black - Yamaha YCS-YFZ-BK
T.M. DESIGNWORKS
$42.95Chain derailments can cause catastrophic engine case damage in a split second—especially during aggressive riding or racing. The T.M. DESIGNWORKS Case Saver shields your engine case from impact while...09501014- SKU:
- 09501014
- Availability:
- Ships Same Business Day
- Weight:
- 0.40 LBS
$42.95 -
T.M. DESIGNWORKS Case Saver - Black - Yamaha YCS-YZR-BK
T.M. DESIGNWORKS
$42.95Chain derailment can happen in seconds and cost you thousands in engine case damage. The T.M. DESIGNWORKS Case Saver wraps your engine case with a proven composite shield designed to absorb...09501015- SKU:
- 09501015
- Availability:
- Ships Same Business Day
- Weight:
- 0.50 LBS
$42.95 -
T.M. DESIGNWORKS Case Saver - Blue - Yamaha YCS-YZR-BU
T.M. DESIGNWORKS
$42.95Chain derailment during aggressive riding can catastrophically damage your engine case—a repair that's far costlier than preventative protection. The T.M. DESIGNWORKS Case Saver shields your Yamaha's...09501016- SKU:
- 09501016
- Availability:
- Ships Same Business Day
- Weight:
- 0.16 LBS
$42.95 -
T.M. DESIGNWORKS Case Saver/Sprocket Cover - Black - Honda HCC-TRX-BK
T.M. DESIGNWORKS
$64.95Chain derailment can mean catastrophic engine case damage and expensive repairs—this case saver eliminates that risk. The T.M. DESIGNWORKS composite design protects your engine while accepting larger...09501017- SKU:
- 09501017
- Availability:
- Ships Same Business Day
- Weight:
- 0.36 LBS
$64.95
