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
-
BOYESEN Clutch Cover - Gold - KX250 CC-12CM
BOYESEN
$95.95A lightweight clutch cover reduces unsprung weight and rotational mass—critical factors in KX250 performance where every fraction matters. The BOYESEN Gold cover combines factory-grade durability with a precision-surfaced design that eliminates leaks and...09400390- SKU:
- 09400390
- Availability:
- Ships Same Business Day
- Weight:
- 1.03 LBS
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- CLUTCH
- COLOR/FINISH:
- MAGNESIUM
- COLOR/FINISH:
- POWDER-COATED
- MODEL:
- FACTORY RACING
- PRODUCT NAME:
- COVER
- UNITS:
- EACH
$95.95 -
BOYESEN Clutch Cover - Gold - YZ/WR250F CC-37M
BOYESEN
$95.95A lightweight clutch cover reduces unsprung weight and rotational mass, directly improving throttle response and handling characteristics on your YZ/WR250F. The factory-spec design delivers OEM protection without the factory weight penalty, giving you...09400235- SKU:
- 09400235
- Availability:
- Ships Same Business Day
- Weight:
- 0.70 LBS
- COLOR/FINISH:
- POWDER-COATED
- MODEL:
- FACTORY RACING
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- CLUTCH
- UNITS:
- EACH
- PRODUCT NAME:
- COVER
- COLOR/FINISH:
- MAGNESIUM
$95.95 -
BOYESEN Clutch Cover - Black - YZ/WR250F CC-37B
BOYESEN
$95.95A lightweight clutch cover cuts unsprung weight and improves handling dynamics without compromising protection—critical for riders pushing lap times. Individually surfaced construction eliminates fitment guesswork and leak issues that plague aftermarket...09400234- SKU:
- 09400234
- Availability:
- Ships Same Business Day
- Weight:
- 0.75 LBS
- COLOR/FINISH:
- POWDER-COATED
- PRODUCT NAME:
- COVER
- UNITS:
- EACH
- RIDING STYLE:
- OFF-ROAD
- MODEL:
- FACTORY RACING
- TYPE:
- CLUTCH
- COLOR/FINISH:
- BLACK
$95.95 -
BOYESEN Clutch Cover - Gold - RM250 CC-22M
BOYESEN
$95.95A quality clutch cover protects one of your engine's most critical components while establishing the visual foundation of your build. The BOYESEN Clutch Cover delivers lightweight construction without sacrificing the durability needed for sustained...09400232- SKU:
- 09400232
- Availability:
- Ships Same Business Day
- Weight:
- 1.00 LBS
- COLOR/FINISH:
- MAGNESIUM
- COLOR/FINISH:
- POWDER-COATED
- MODEL:
- FACTORY RACING
- PRODUCT NAME:
- COVER
- TYPE:
- CLUTCH
- UNITS:
- EACH
- RIDING STYLE:
- OFF-ROAD
$95.95 -
BOYESEN Clutch Cover - Gold - RM125 CC-21AM
BOYESEN
$95.95A quality clutch cover is essential for protecting your engine's internal components while maintaining a clean, professional appearance in the paddock. The BOYESEN Clutch Cover delivers lightweight construction and factory-grade precision fit,...09400231- SKU:
- 09400231
- Availability:
- Ships Same Business Day
- Weight:
- 0.80 LBS
- PRODUCT NAME:
- COVER
- COLOR/FINISH:
- MAGNESIUM
- COLOR/FINISH:
- POWDER-COATED
- MODEL:
- FACTORY RACING
- TYPE:
- CLUTCH
- UNITS:
- EACH
- RIDING STYLE:
- OFF-ROAD
$95.95 -
BOYESEN Clutch Cover - Gold - KX250 CC-12M
BOYESEN
$95.95A factory clutch cover is critical protection for your KX250's clutch basket and internal components—one crash or debris strike can mean a complete engine teardown. The BOYESEN Gold Clutch Cover combines lightweight construction with precision...09400229- SKU:
- 09400229
- Availability:
- Ships Same Business Day
- Weight:
- 0.85 LBS
- COLOR/FINISH:
- POWDER-COATED
- MODEL:
- FACTORY RACING
- PRODUCT NAME:
- COVER
- UNITS:
- EACH
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- CLUTCH
- COLOR/FINISH:
- MAGNESIUM
$95.95 -
BOYESEN Clutch Cover - Gold - KX125 CC-11AM
BOYESEN
$95.95A clutch cover does more than protect—it's a visible statement of your commitment to precision engineering and race-ready performance. The BOYESEN Gold Clutch Cover combines lightweight construction with a factory-finish aesthetic, giving you authentic...09400228- SKU:
- 09400228
- Availability:
- Ships Same Business Day
- Weight:
- 0.70 LBS
- COLOR/FINISH:
- MAGNESIUM
- COLOR/FINISH:
- POWDER-COATED
- PRODUCT NAME:
- COVER
- MODEL:
- FACTORY RACING
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- CLUTCH
- UNITS:
- EACH
$95.95 -
BOYESEN Clutch Cover - Gold - CR450F CC-06M
BOYESEN
$95.95A clutch cover does more than protect—it's a visual statement of your commitment to quality and performance. The BOYESEN Gold Clutch Cover combines race-proven durability with a lightweight design that reduces unsprung mass, while its precision-surfaced...09400226- SKU:
- 09400226
- Availability:
- Ships Same Business Day
- Weight:
- 0.85 LBS
- COLOR/FINISH:
- MAGNESIUM
- COLOR/FINISH:
- POWDER-COATED
- MODEL:
- FACTORY RACING
- PRODUCT NAME:
- COVER
- RIDING STYLE:
- ATV
- UNITS:
- EACH
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- CLUTCH
$95.95 -
BOYESEN Clutch Cover - Black - CR450F CC-06B
BOYESEN
$95.95A clutch cover isn't just cosmetic—it's your first line of defense against debris, heat, and premature wear. The BOYESEN CC-06B delivers the lightweight construction you need for race applications while maintaining a factory-tight seal that won't fail...09400225- SKU:
- 09400225
- Availability:
- Ships Same Business Day
- Weight:
- 0.85 LBS
- COLOR/FINISH:
- BLACK
- COLOR/FINISH:
- POWDER-COATED
- MODEL:
- FACTORY RACING
- PRODUCT NAME:
- COVER
- UNITS:
- EACH
- RIDING STYLE:
- ATV
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- CLUTCH
$95.95 -
BOYESEN Clutch Cover - Gold - CR250 CC-02AM
BOYESEN
$95.95If you're running a CR250 at the track or trail, your clutch cover takes a beating. The BOYESEN Lightweight Clutch Cover combines factory-level protection with measurable weight savings, helping you optimize your power-to-weight ratio without...09400223- SKU:
- 09400223
- Availability:
- Ships Same Business Day
- Weight:
- 0.85 LBS
- COLOR/FINISH:
- MAGNESIUM
- COLOR/FINISH:
- POWDER-COATED
- MODEL:
- FACTORY RACING
- TYPE:
- CLUTCH
- UNITS:
- EACH
- RIDING STYLE:
- OFF-ROAD
- PRODUCT NAME:
- COVER
$95.95 -
BOYESEN Ignition Cover - Gold - YZ250 SC-32AM
BOYESEN
$87.95The stock ignition cover on your YZ250 isn't just cosmetic—it's your engine's first line of defense against dirt, water, and debris that can compromise internal components. A quality replacement cover like the BOYESEN Factory model seals properly and...09400220- SKU:
- 09400220
- Availability:
- Ships Same Business Day
- Weight:
- 0.65 LBS
- MODEL:
- FACTORY RACING
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- IGNITION
- COLOR/FINISH:
- MAGNESIUM
- COLOR/FINISH:
- POWDER-COATED
- MATERIAL:
- ALUMINUM
- PRODUCT NAME:
- COVER
- UNITS:
- EACH
$87.95 -
BOYESEN Ignition Cover - Gold - RM250 SC-23M
BOYESEN
$87.95A quality ignition cover is essential protection against the elements—dirt, water, and debris can compromise engine reliability if left exposed. The BOYESEN Factory Ignition Cover delivers OEM-level sealing with superior durability, combining lightweight...09400218- SKU:
- 09400218
- Availability:
- Ships Same Business Day
- Weight:
- 0.50 LBS
- COLOR/FINISH:
- POWDER-COATED
- MODEL:
- FACTORY RACING
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- IGNITION
- UNITS:
- EACH
- COLOR/FINISH:
- MAGNESIUM
- PRODUCT NAME:
- COVER
- MATERIAL:
- ALUMINUM
$87.95 -
BOYESEN Ignition Cover - Gold - RM125 SC-21CM
BOYESEN
$87.95The stock ignition cover on your RM125 takes a beating—dirt, water, and constant vibration compromise engine integrity and longevity. A quality replacement like the Boyesen Factory Cover seals properly to guard critical internal components while...09400217- SKU:
- 09400217
- Availability:
- Ships Same Business Day
- Weight:
- 0.60 LBS
- MODEL:
- FACTORY RACING
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- IGNITION
- COLOR/FINISH:
- MAGNESIUM
- COLOR/FINISH:
- POWDER-COATED
- MATERIAL:
- ALUMINUM
- PRODUCT NAME:
- COVER
- UNITS:
- EACH
$87.95 -
BOYESEN Ignition Cover - Gold - KX250 SC-12M
BOYESEN
$87.95Keep your KX250's ignition system protected from the elements with a cover that matches factory standards while outlasting the stock alternative. Boyesen's cast aluminum construction provides the durability needed for both track sessions and trail...09400215- SKU:
- 09400215
- Availability:
- Ships Same Business Day
- Weight:
- 0.65 LBS
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- IGNITION
- COLOR/FINISH:
- MAGNESIUM
- COLOR/FINISH:
- POWDER-COATED
- MATERIAL:
- ALUMINUM
- MODEL:
- FACTORY RACING
- PRODUCT NAME:
- COVER
- UNITS:
- EACH
$87.95Qty in Cart: 0Quantity:Price:$87.95Subtotal: -
BOYESEN Ignition Cover - Gold - KX125 SC-11AM
BOYESEN
$87.95A quality ignition cover isn't just cosmetic—it's essential protection for your engine's most vulnerable components. The BOYESEN Factory Ignition Cover seals out dirt and water that can compromise internal engine health, while its cast aluminum...09400214- SKU:
- 09400214
- Availability:
- Ships Same Business Day
- Weight:
- 0.65 LBS
- PRODUCT NAME:
- COVER
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- IGNITION
- COLOR/FINISH:
- POWDER-COATED
- MATERIAL:
- ALUMINUM
- MODEL:
- FACTORY RACING
- UNITS:
- EACH
- COLOR/FINISH:
- MAGNESIUM
$87.95 -
BOYESEN Ignition Cover - Gold - CR500 SC-03M
BOYESEN
$87.95A quality ignition cover is a small detail that separates a well-maintained engine from one heading toward premature wear. The Boyesen Factory Ignition Cover protects your CR500's internal components from moisture, dirt, and contaminants while delivering...09400212- SKU:
- 09400212
- Availability:
- Ships Same Business Day
- Weight:
- 0.60 LBS
- COLOR/FINISH:
- POWDER-COATED
- MODEL:
- FACTORY RACING
- PRODUCT NAME:
- COVER
- UNITS:
- EACH
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- IGNITION
- COLOR/FINISH:
- MAGNESIUM
- MATERIAL:
- ALUMINUM
$87.95 -
BOYESEN Ignition Cover - Gold - CR250 SC02AM
BOYESEN
$87.95A properly sealed ignition cover is critical for engine longevity—it keeps dirt, moisture, and contaminants away from ignition components that can't tolerate exposure. The Boyesen Factory Cover outperforms stock units with premium aluminum construction...09400211- SKU:
- 09400211
- Availability:
- Ships Same Business Day
- Weight:
- 0.55 LBS
- COLOR/FINISH:
- POWDER-COATED
- MODEL:
- FACTORY RACING
- PRODUCT NAME:
- COVER
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- IGNITION
- UNITS:
- EACH
- COLOR/FINISH:
- MAGNESIUM
- MATERIAL:
- ALUMINUM
$87.95 -
BOYESEN Clutch Cover - Gold CC-17AM
BOYESEN
$95.95A clutch cover does more than protect—it defines your bike's aesthetic while delivering the durability your engine demands. The BOYESEN Clutch Cover CC-17AM combines lightweight construction with a factory-grade finish, eliminating the risk of leaks that...09401117- SKU:
- 09401117
- Availability:
- Ships Same Business Day
- Weight:
- 0.75 LBS
- UNITS:
- EACH
- COLOR/FINISH:
- MAGNESIUM
- COLOR/FINISH:
- POWDER-COATED
- MODEL:
- FACTORY RACING
- TYPE:
- CLUTCH
- PRODUCT NAME:
- COVER
- RIDING STYLE:
- OFF-ROAD
$95.95Qty in Cart: 0Quantity:Price:$95.95Subtotal: -
BOYESEN Clutch Cover - Black CC-17AB
BOYESEN
$95.95A quality clutch cover protects one of your engine's most critical components while maintaining a clean, professional appearance in the engine bay. The BOYESEN CC-17AB delivers lightweight construction without compromising durability, making it an ideal...09401116- SKU:
- 09401116
- Availability:
- Ships Same Business Day
- Weight:
- 0.74 LBS
- TYPE:
- CLUTCH
- COLOR/FINISH:
- BLACK
- PRODUCT NAME:
- COVER
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
- COLOR/FINISH:
- POWDER-COATED
- MODEL:
- FACTORY RACING
$95.95 -
BOYESEN Clutch Cover - Gold CC-10M
BOYESEN
$179.95A factory clutch cover that actually protects your engine while keeping weight down—essential for racers and serious builders who demand both durability and performance. The BOYESEN CC-10M combines precision engineering with a tough finish that handles...09401114- SKU:
- 09401114
- Availability:
- Ships Same Business Day
- Weight:
- 0.80 LBS
- COLOR/FINISH:
- MAGNESIUM
- PRODUCT NAME:
- COVER
- UNITS:
- EACH
- COLOR/FINISH:
- POWDER-COATED
- MODEL:
- FACTORY RACING
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- CLUTCH
$179.95
