Dirt Bike Engine Covers
Dirt Bike Engine Covers & Clutch Covers for Kawasaki, Honda & Yamaha at JJ Motorsports
Protect your dirt bike's engine internals and improve durability with premium engine covers and clutch covers from JJ Motorsports, precision-machined for perfect fitment, enhanced heat dissipation, and superior impact resistance in motocross, enduro, and trail riding. Our selection includes billet aluminum clutch covers, water pump covers with impellers, and OEM-style replacements designed to safeguard against rocks, debris, and crashes while maintaining oil flow and cooling efficiency. Compatible with top models like Kawasaki KX250F/KX450F, Honda CRF, Yamaha YZ/WR, and more, these high-quality components from trusted brands ensure leak-free sealing, reduced weight, and race-ready performance in dusty, high-speed conditions. Upgrade to billet covers for ultimate strength or impeller-equipped designs for better water circulation—perfect for preventing overheating and extending engine life on every aggressive ride.
Shop brands like Hinson Racing, Moose Racing, and Pro Circuit for race-proven quality. Explore related categories such as dirt bike engine for pistons and gaskets or dirt bike clutch for plates and hubs.
Top Dirt Bike Engine Covers
- Hinson Racing Clutch Cover Kawasaki C663-2102 – Billet aluminum clutch cover for Kawasaki KX250F 2009-2016; hard anodized for durability, improves oil flow, and protects internals from damage.
- Moose Racing Clutch Cover Kawasaki D70-2474MB – Black anodized aluminum clutch cover for Kawasaki KX450F 2009-2018; lightweight design with enhanced sealing for off-road protection.
- Pro Circuit Water Pump Cover with Impeller Kawasaki WPK21250 – Billet water pump cover and impeller kit for Kawasaki KX250F 2021-2023; increases coolant flow by 30% for better engine cooling.
Browse our in-stock inventory below with same-day shipping and expert support. Free shipping on orders over $99! Questions? Contact us for fitment advice!
- Product
- Qty in Cart
- Quantity
- Price
- Subtotal
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BOYESEN Clutch Cover - KX250 CC-12AB
BOYESEN
$95.95A clutch cover is one of the most visible performance components on your KX250, and the BOYESEN CC-12AB delivers both durability and aesthetics without compromising lightweight construction. Factory-spec designs mean perfect fitment and reliable...CC12AB- SKU:
- CC12AB
- Availability:
- Ships Same Business Day
- Weight:
- 1.00 LBS
- COLOR/FINISH:
- POWDER-COATED
- TYPE:
- CLUTCH
- COLOR/FINISH:
- BLACK
- PRODUCT NAME:
- COVER
- MODEL:
- FACTORY RACING
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
$95.95Qty in Cart: 0Quantity:Price:$95.95Subtotal: -
BOYESEN Clutch Cover - Black - KX125 CC-11AB
BOYESEN
$95.95A lightweight clutch cover is essential for reducing unsprung weight and improving your kart's power-to-weight ratio—critical gains on the track. The Boyesen CC-11AB delivers factory-level protection without the excess mass, letting your KX125 respond...CC11AB- SKU:
- CC11AB
- Availability:
- Ships Same Business Day
- Weight:
- 0.75 LBS
- RIDING STYLE:
- OFF-ROAD
- MODEL:
- FACTORY RACING
- UNITS:
- EACH
- COLOR/FINISH:
- BLACK
- COLOR/FINISH:
- POWDER-COATED
- TYPE:
- CLUTCH
- PRODUCT NAME:
- COVER
$95.95 -
BOYESEN Clutch Cover - Black - CR250 CC02B
BOYESEN
$95.95A factory clutch cover replacement isn't just about aesthetics—it's about maintaining the seal integrity that keeps your CR250 running clean and reliable. BOYESEN's lightweight design cuts rotational mass without compromising the durability you need for...CC02B- SKU:
- CC02B
- Availability:
- Ships Same Business Day
- Weight:
- 1.06 LBS
- UNITS:
- EACH
- RIDING STYLE:
- OFF-ROAD
- COLOR/FINISH:
- BLACK
- COLOR/FINISH:
- POWDER-COATED
- MODEL:
- FACTORY RACING
- TYPE:
- CLUTCH
- PRODUCT NAME:
- COVER
$95.95 -
BOYESEN Clutch Cover - Black - CR250 CC-02AB
BOYESEN
$95.95A clutch cover serves as both a protective barrier and a visual statement on your CR250. The BOYESEN Lightweight Clutch Cover combines race-proven durability with a factory-quality finish, eliminating the performance drag and aesthetic compromises of...CC02AB- SKU:
- CC02AB
- Availability:
- Ships Same Business Day
- Weight:
- 0.85 LBS
- UNITS:
- EACH
- PRODUCT NAME:
- COVER
- COLOR/FINISH:
- BLACK
- COLOR/FINISH:
- POWDER-COATED
- MODEL:
- FACTORY RACING
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- CLUTCH
$95.95 -
BOYESEN Clutch Cover - Black - CR125 CC01B
BOYESEN
$95.95A lightweight clutch cover is essential for reducing unsprung weight and improving your CR125's overall performance dynamics. The BOYESEN Clutch Cover delivers factory-grade protection without the excess mass of OEM units, while its precision-surfaced...CC01B- SKU:
- CC01B
- Availability:
- Ships Same Business Day
- Weight:
- 0.94 LBS
- MODEL:
- FACTORY RACING
- TYPE:
- CLUTCH
- COLOR/FINISH:
- BLACK
- PRODUCT NAME:
- COVER
- COLOR/FINISH:
- POWDER-COATED
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
$95.95 -
BOYESEN Clutch Cover - Black - CR125 CC01AB
BOYESEN
$95.95A factory-spec clutch cover that combines lightweight construction with race-proven durability—perfect for CR125 riders who demand both performance and reliability. The individually surfaced design eliminates common leak points, while the powder-coated...CC01AB- SKU:
- CC01AB
- Availability:
- Ships Same Business Day
- Weight:
- 0.13 LBS
- PRODUCT NAME:
- COVER
- UNITS:
- EACH
- COLOR/FINISH:
- BLACK
- COLOR/FINISH:
- POWDER-COATED
- MODEL:
- FACTORY RACING
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- CLUTCH
$95.95 -
BOYESEN Impeller Water Pump Cover - Black - YZ125 WPK-31AB
BOYESEN
$219.95Stock water pumps can't keep pace with the demands of high-RPM racing, leaving your YZ125 vulnerable to thermal stress and performance loss. The BOYESEN Impeller Water Pump Cover delivers measurably higher coolant flow across the entire RPM band, keeping...09401471- SKU:
- 09401471
- Availability:
- Ships Same Business Day
- Weight:
- 0.40 LBS
- PRODUCT NAME:
- IMPELLER
- TYPE:
- WATER PUMP
- UNITS:
- KIT
- COLOR/FINISH:
- BLACK
- RIDING STYLE:
- OFF-ROAD
- STYLE:
- NAUTILUS
- BASE COLOR:
- BLACK
- MATERIAL:
- ALUMINUM
- MODEL:
- SUPERCOOLER
- PRODUCT NAME:
- COVER
$219.95 -
BOYESEN Clutch Cover - Gold - Kawasaki CC-18AM
BOYESEN
$95.95If you're serious about reducing rotating mass and improving engine response, a lightweight clutch cover is a straightforward upgrade that delivers measurable results. The BOYESEN CC-18AM is precision-engineered for your Kawasaki, offering the protection...09401466- SKU:
- 09401466
- Availability:
- Ships Same Business Day
- Weight:
- 0.90 LBS
- COLOR/FINISH:
- MAGNESIUM
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
- TYPE:
- CLUTCH
- COLOR/FINISH:
- POWDER-COATED
- MODEL:
- FACTORY RACING
- PRODUCT NAME:
- COVER
$95.95Qty in Cart: 0Quantity:Price:$95.95Subtotal: -
BOYESEN Clutch Cover - Black - Kawasaki CC-18AB
BOYESEN
$95.95A clutch cover does more than protect—it's a visual statement of your commitment to precision engineering and race-ready aesthetics. The BOYESEN Clutch Cover delivers lightweight construction without compromising durability, meaning less rotating mass...09401465- SKU:
- 09401465
- Availability:
- Ships Same Business Day
- Weight:
- 0.85 LBS
- RIDING STYLE:
- OFF-ROAD
- COLOR/FINISH:
- POWDER-COATED
- MODEL:
- FACTORY RACING
- PRODUCT NAME:
- COVER
- TYPE:
- CLUTCH
- COLOR/FINISH:
- BLACK
- UNITS:
- EACH
$95.95Qty in Cart: 0Quantity:Price:$95.95Subtotal: -
BOYESEN Clutch Cover - Gold - KTM/Husqvarna CC-45AM
BOYESEN
$95.95Factory-spec clutch covers take a beating in competitive riding, and OEM units are prone to leaks and premature wear. The BOYESEN CC-45AM delivers race-proven durability with CNC-precision machining and a powder-coated finish that holds up under extreme...09401462- SKU:
- 09401462
- Availability:
- Ships Same Business Day
- Weight:
- 0.80 LBS
- UNITS:
- EACH
- COLOR/FINISH:
- MAGNESIUM
- COLOR/FINISH:
- POWDER-COATED
- MODEL:
- FACTORY RACING
- PRODUCT NAME:
- COVER
- RIDING STYLE:
- STREET
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- CLUTCH
$95.95Qty in Cart: 0Quantity:Price:$95.95Subtotal: -
BOYESEN Clutch Cover - Black - KTM/Husqvarna CC-45AB
BOYESEN
$95.95A factory-grade clutch cover protects one of your engine's most critical components while reducing rotational mass—critical on the track where every ounce matters. The BOYESEN CC-45AB is individually surfaced for a precision fit that eliminates leaks,...09401461- SKU:
- 09401461
- Availability:
- Ships Same Business Day
- Weight:
- 0.85 LBS
- RIDING STYLE:
- STREET
- TYPE:
- CLUTCH
- COLOR/FINISH:
- BLACK
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
- COLOR/FINISH:
- POWDER-COATED
- MODEL:
- FACTORY RACING
- PRODUCT NAME:
- COVER
$95.95Qty in Cart: 0Quantity:Price:$95.95Subtotal: -
BOYESEN Clutch Cover - Gold - KTM/Husqvarna CC-44CM
BOYESEN
$95.95A lightweight clutch cover that delivers the precision fit and durability expected on the track—without compromising on appearance. The individually surfaced design eliminates common leak points, while the reinforced gasket seal ensures reliable...09401458- SKU:
- 09401458
- Availability:
- Ships Same Business Day
- Weight:
- 0.80 LBS
- COLOR/FINISH:
- MAGNESIUM
- RIDING STYLE:
- STREET
- MODEL:
- FACTORY RACING
- TYPE:
- CLUTCH
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
- COLOR/FINISH:
- POWDER-COATED
- PRODUCT NAME:
- COVER
$95.95Qty in Cart: 0Quantity:Price:$95.95Subtotal: -
BOYESEN Clutch Cover - Gold - KTM/Husqvarna CC-44CB
BOYESEN
$95.95If you're serious about reducing unsprung weight and shaving precious grams off your KTM or Husqvarna, a lightweight factory clutch cover is non-negotiable. The BOYESEN CC-44CB delivers race-proven durability without the mass penalty, letting your...09401457- SKU:
- 09401457
- Availability:
- Ships Same Business Day
- Weight:
- 0.80 LBS
- PRODUCT NAME:
- COVER
- UNITS:
- EACH
- COLOR/FINISH:
- POWDER-COATED
- MODEL:
- FACTORY RACING
- TYPE:
- CLUTCH
- COLOR/FINISH:
- BLACK
- RIDING STYLE:
- OFF-ROAD
- RIDING STYLE:
- STREET
$95.95 -
BOYESEN Clutch Cover - Black - KTM/Husqvarna CC-41AB
BOYESEN
$95.95A lightweight clutch cover reduces unsprung mass and heat retention while delivering the durability required for competitive racing and trail abuse. The Boyesen CC-41AB features precision engineering with a leak-free design that won't compromise engine...09401453- SKU:
- 09401453
- Availability:
- Ships Same Business Day
- Weight:
- 0.80 LBS
- COLOR/FINISH:
- BLACK
- COLOR/FINISH:
- POWDER-COATED
- MODEL:
- FACTORY RACING
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- CLUTCH
- PRODUCT NAME:
- COVER
- UNITS:
- EACH
- RIDING STYLE:
- STREET
$95.95 -
BOYESEN Ignition Cover - Orange - KTM SC-41CO
BOYESEN
$97.95Stock ignition covers are vulnerable to dirt, water, and premature wear—especially in demanding riding conditions. The Boyesen SC-41CO Factory Ignition Cover is cast from high-grade aluminum to provide reliable protection while maintaining a lightweight...09401447- SKU:
- 09401447
- Availability:
- Ships Same Business Day
- Weight:
- 0.75 LBS
- COLOR/FINISH:
- ORANGE
- COLOR/FINISH:
- POWDER-COATED
- MATERIAL:
- ALUMINUM
- MODEL:
- FACTORY RACING
- PRODUCT NAME:
- COVER
- UNITS:
- EACH
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- IGNITION
$97.95 -
BOYESEN Ignition Cover - Gold - KTM/Husqvarna SC-41CM
BOYESEN
$87.95Your engine's internals face constant threats from dust, moisture, and debris—especially in trail and off-road conditions. The BOYESEN Ignition Cover replaces the factory plastic alternative with a precision-cast aluminum design that seals reliably and...09401446- SKU:
- 09401446
- Availability:
- Ships Same Business Day
- Weight:
- 0.75 LBS
- COLOR/FINISH:
- MAGNESIUM
- COLOR/FINISH:
- POWDER-COATED
- MATERIAL:
- ALUMINUM
- MODEL:
- FACTORY RACING
- PRODUCT NAME:
- COVER
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- IGNITION
- UNITS:
- EACH
$87.95 -
BOYESEN Ignition Cover - Black - KTM/Husqvarna SC-41CB
BOYESEN
$87.95The stock ignition cover on your KTM or Husqvarna is vulnerable to mud, water, and debris—exactly what can compromise engine reliability during aggressive riding. The BOYESEN Factory Ignition Cover replaces that weak point with a precision-cast aluminum...09401445- SKU:
- 09401445
- Availability:
- Ships Same Business Day
- Weight:
- 0.75 LBS
- COLOR/FINISH:
- BLACK
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- IGNITION
- COLOR/FINISH:
- POWDER-COATED
- MATERIAL:
- ALUMINUM
- MODEL:
- FACTORY RACING
- PRODUCT NAME:
- COVER
- UNITS:
- EACH
$87.95Qty in Cart: 0Quantity:Price:$87.95Subtotal: -
BOYESEN Clutch Cover - Gold - Yamaha CC-37AM
BOYESEN
$95.95A clutch cover does more than protect—it's a visible statement of your commitment to quality and performance. The BOYESEN Clutch Cover combines lightweight construction with a factory-grade fit that eliminates leaks and looks sharp on the track or trail...09401371- SKU:
- 09401371
- Availability:
- Ships Same Business Day
- Weight:
- 0.80 LBS
- RIDING STYLE:
- OFF-ROAD
- PRODUCT NAME:
- COVER
- UNITS:
- EACH
- COLOR/FINISH:
- MAGNESIUM
- COLOR/FINISH:
- POWDER-COATED
- MODEL:
- FACTORY RACING
- TYPE:
- CLUTCH
$95.95Qty in Cart: 0Quantity:Price:$95.95Subtotal: -
BOYESEN Clutch Cover - Black - Yamaha CC-37AB
BOYESEN
$95.95A clutch cover does more than protect—it sets the tone for your bike's reliability and appearance. The BOYESEN Lightweight Factory Clutch Cover delivers race-proven durability with a precision-fitted design that eliminates leaks, so you can focus on...09401370- SKU:
- 09401370
- Availability:
- Ships Same Business Day
- Weight:
- 0.80 LBS
- MODEL:
- FACTORY RACING
- TYPE:
- CLUTCH
- COLOR/FINISH:
- POWDER-COATED
- PRODUCT NAME:
- COVER
- UNITS:
- EACH
- COLOR/FINISH:
- BLACK
- RIDING STYLE:
- OFF-ROAD
$95.95Qty in Cart: 0Quantity:Price:$95.95Subtotal: -
BOYESEN Clutch Cover - Gold - KTM/Husaberg CC-45M
BOYESEN
$95.95A factory-lightweight clutch cover cuts parasitic weight without sacrificing durability—critical when lap times are measured in hundredths. The individually surfaced design guarantees a leak-free fit straight out of the box, while the powder-coated...09401264- SKU:
- 09401264
- Availability:
- Ships Same Business Day
- Weight:
- 0.85 LBS
- COLOR/FINISH:
- MAGNESIUM
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- COVER
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
- TYPE:
- CLUTCH
- COLOR/FINISH:
- POWDER-COATED
- MODEL:
- FACTORY RACING
$95.95Qty in Cart: 0Quantity:Price:$95.95Subtotal:
