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
-
Rekluse Clutch Cover KTM 65 SX 2009-2025 RMS-387
REKLUSE
$229.00The stock clutch cover on your KTM 65 SX is vulnerable to damage from rocks, roots, and impacts that are inevitable in aggressive riding. The Rekluse RMS-387 clutch cover replaces that weak point with billet aluminum construction and a deeper design that...09401818- SKU:
- 09401818
- Availability:
- Ships Same Business Day
- Weight:
- 0.75 LBS
- TYPE:
- CLUTCH
- COLOR/FINISH:
- ANODIZED
- COLOR/FINISH:
- BLACK
- MATERIAL:
- BILLET ALUMINUM
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
- PRODUCT NAME:
- COVER
$229.00 -
Rekluse Clutch Cover KTM 125 SX 2016-2022 RMS-390
REKLUSE
$229.00If you're running a KTM 125 SX on the trail or track, the stock clutch cover is your first point of failure when things get rough. The Rekluse RMS-390 replaces that vulnerable component with billet aluminum construction that resists impacts from rocks...09401819- SKU:
- 09401819
- Availability:
- Ships Same Business Day
- Weight:
- 0.90 LBS
- PRODUCT NAME:
- COVER
- UNITS:
- EACH
- RIDING STYLE:
- STREET
- TYPE:
- CLUTCH
- COLOR/FINISH:
- ANODIZED
- COLOR/FINISH:
- BLACK
- MATERIAL:
- BILLET ALUMINUM
- RIDING STYLE:
- OFF-ROAD
$229.00 -
Hinson Racing Clutch Cover for Honda CRF450R 2002-2008 C224
HINSON RACING
$159.99Stock clutch covers overheat under sustained throttle, robbing you of reliable engagement when it matters most. The Hinson Racing Clutch Cover solves this with optimized cooling geometry and reinforced construction that handles the demands of competitive...C154- SKU:
- C154
- Availability:
- Ships Same Business Day
- Weight:
- 1.00 LBS
- COLOR/FINISH:
- BLACK
- MATERIAL:
- T-6 ALUMINUM
- PRODUCT NAME:
- COVER
- UNITS:
- EACH
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- CLUTCH
- MODEL:
- BILLETPROOF
$159.99 -
BOYESEN Ignition Cover - Black - KTM SX SC-41AB
BOYESEN
$87.95The factory appearance of a professional-grade ignition cover matters when you're serious about your machine. This Boyesen cover seals properly to keep dirt and water out of your engine's internals—protecting your investment and maintaining reliability...09401266- SKU:
- 09401266
- Availability:
- Ships Same Business Day
- Weight:
- 0.78 LBS
- RIDING STYLE:
- STREET
- COLOR/FINISH:
- BLACK
- PRODUCT NAME:
- COVER
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- IGNITION
- MATERIAL:
- ALUMINUM
- MODEL:
- FACTORY RACING
- COLOR/FINISH:
- POWDER-COATED
- UNITS:
- EACH
$87.95 -
BOYESEN Ignition Cover - Gold - CR125 SC-01AM
BOYESEN
$87.95A quality ignition cover isn't just about aesthetics—it's critical engine protection. The Boyesen Factory Ignition Cover seals out dirt and water that can compromise internal components, while its premium aluminum construction and powder-coated finish...09400209- SKU:
- 09400209
- Availability:
- Ships Same Business Day
- Weight:
- 0.55 LBS
- COLOR/FINISH:
- POWDER-COATED
- MODEL:
- FACTORY RACING
- PRODUCT NAME:
- COVER
- TYPE:
- IGNITION
- UNITS:
- EACH
- RIDING STYLE:
- OFF-ROAD
- COLOR/FINISH:
- MAGNESIUM
- MATERIAL:
- ALUMINUM
$87.95 -
Hinson Racing Clutch Cover Honda CRF450X 2005-2017 C154X
HINSON RACING
$159.99Stock clutch covers on the CRF450X aren't designed for sustained high-performance riding—they trap heat and compromise durability when you're pushing hard on the track or trail. The Hinson Racing Clutch Cover eliminates this weakness with race-proven...09400738- SKU:
- 09400738
- Availability:
- Ships Same Business Day
- Weight:
- 0.72 LBS
- MODEL:
- BILLETPROOF
- COLOR/FINISH:
- BLACK
- MATERIAL:
- T-6 ALUMINUM
- PRODUCT NAME:
- COVER
- UNITS:
- EACH
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- CLUTCH
$159.99 -
Hinson Racing Clutch Cover 2002-2016 Honda CRF450R C389
HINSON RACING
$159.99Factory clutch covers weren't engineered for sustained high-RPM racing environments—they overheat under load and compromise engagement consistency. The Hinson Racing Clutch Cover eliminates thermal buildup through strategic fin design and superior...09400818- SKU:
- 09400818
- Availability:
- Ships Same Business Day
- Weight:
- 0.76 LBS
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- CLUTCH
- COLOR/FINISH:
- BLACK
- MATERIAL:
- T-6 ALUMINUM
- PRODUCT NAME:
- COVER
- UNITS:
- EACH
- MODEL:
- BILLETPROOF
$159.99 -
Hinson Racing Clutch Cover for Yamaha YZ450F 2010-2022 C416
HINSON RACING
$159.99The stock clutch cover on your YZ450F can't handle sustained high-RPM heat cycles without thermal degradation—especially in closed-course racing or extended trail sessions. Hinson's C416 clutch cover dissipates heat more effectively than OEM designs,...09400982- SKU:
- 09400982
- Availability:
- Ships Same Business Day
- Weight:
- 0.86 LBS
- COLOR/FINISH:
- BLACK
- MATERIAL:
- T-6 ALUMINUM
- PRODUCT NAME:
- COVER
- UNITS:
- EACH
- MODEL:
- BILLETPROOF
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- CLUTCH
$159.99 -
Hinson Racing Clutch Cover Kawasaki KX85 2001-2025 C068
HINSON RACING
$159.99Thermal management is critical when you're pushing a KX85 to its limits on the track. The Hinson Racing Clutch Cover dissipates heat more effectively than stock covers, keeping your clutch engagement consistent lap after lap. Built with racing-grade...09401035- SKU:
- 09401035
- Availability:
- Ships Same Business Day
- Weight:
- 0.80 LBS
- COLOR/FINISH:
- BLACK
- MATERIAL:
- T-6 ALUMINUM
- PRODUCT NAME:
- COVER
- UNITS:
- EACH
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- CLUTCH
- MODEL:
- BILLETPROOF
$159.99 -
Hinson Racing Clutch Cover for Yamaha YFZ450 2004-2013 C196
HINSON RACING
$159.99Stock clutch covers aren't engineered for sustained high-RPM racing conditions—they'll overheat and cause engagement inconsistencies when you need reliability most. The Hinson Racing Clutch Cover replaces that weakness with superior thermal management...C196- SKU:
- C196
- Availability:
- Ships Same Business Day
- Weight:
- 1.00 LBS
- MODEL:
- BILLETPROOF
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- CLUTCH
- PRODUCT NAME:
- COVER
- UNITS:
- EACH
- COLOR/FINISH:
- BLACK
- MATERIAL:
- T-6 ALUMINUM
$159.99 -
Hinson Racing Clutch Cover for Suzuki RM250 2002-2008 C046
HINSON RACING
$159.99Heat buildup is the silent killer of clutch performance, especially during sustained high-RPM riding or racing conditions. The Hinson Racing Clutch Cover for your RM250 combats this with superior thermal management and materials that outperform stock...C046X- SKU:
- C046X
- Availability:
- Ships Same Business Day
- Weight:
- 0.80 LBS
- MODEL:
- BILLETPROOF
- RIDING STYLE:
- OFF-ROAD
- COLOR/FINISH:
- BLACK
- MATERIAL:
- T-6 ALUMINUM
- TYPE:
- CLUTCH
- PRODUCT NAME:
- COVER
- UNITS:
- EACH
$159.99 -
Rekluse Clutch Cover KTM 65 SX 2024 RMS-0413065
REKLUSE
$229.00Stock clutch covers are vulnerable to trail damage and inadequate cooling under sustained riding. The Rekluse clutch cover upgrades your KTM 65 SX with billet aluminum construction and increased oil capacity, delivering better thermal management and...09401821- SKU:
- 09401821
- Availability:
- Ships Same Business Day
- Weight:
- 0.90 LBS
- COLOR/FINISH:
- ANODIZED
- MATERIAL:
- BILLET ALUMINUM
- PRODUCT NAME:
- COVER
- TYPE:
- CLUTCH
- COLOR/FINISH:
- BLACK
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
- RIDING STYLE:
- STREET
$229.00 -
Rekluse Clutch Cover Honda CRF450R 2017-2025 RMS-409
REKLUSE
$189.00The stock CRF450R clutch cover was never designed to handle extended trail riding or high-performance use—it limits oil capacity and leaves your engine running hotter than necessary. The Rekluse billet aluminum cover increases oil volume for superior...09401824- SKU:
- 09401824
- Availability:
- Ships Same Business Day
- Weight:
- 1.05 LBS
- PRODUCT NAME:
- COVER
- UNITS:
- EACH
- COLOR/FINISH:
- ANODIZED
- COLOR/FINISH:
- BLACK
- MATERIAL:
- BILLET ALUMINUM
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- CLUTCH
$189.00 -
Rekluse Clutch Cover for Honda CRF250R 2010-2017 RMS-416
REKLUSE
$189.00The stock clutch cover on your CRF250R is vulnerable to trail debris—rocks, logs, and impacts that compromise both protection and cooling. Rekluse's billet aluminum cover increases oil capacity for better thermal management while providing substantial...09401827- SKU:
- 09401827
- Availability:
- Ships Same Business Day
- Weight:
- 1.00 LBS
- PRODUCT NAME:
- COVER
- UNITS:
- EACH
- TYPE:
- CLUTCH
- COLOR/FINISH:
- ANODIZED
- COLOR/FINISH:
- BLACK
- MATERIAL:
- BILLET ALUMINUM
- RIDING STYLE:
- OFF-ROAD
$189.00Qty in Cart: 0Quantity:Price:$189.00Subtotal: -
Rekluse Clutch Cover Kawasaki KX450F 2016-2018 RMS-444
REKLUSE
$179.00The stock clutch cover on your KX450F limits oil capacity and leaves your drivetrain vulnerable to trail impacts. The Rekluse RMS-444 replaces that weakness with a billet aluminum design that holds more oil for superior cooling and lubrication, while its...09401829- SKU:
- 09401829
- Availability:
- Ships Same Business Day
- Weight:
- 0.96 LBS
- COLOR/FINISH:
- BLACK
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
- TYPE:
- CLUTCH
- COLOR/FINISH:
- ANODIZED
- MATERIAL:
- BILLET ALUMINUM
- PRODUCT NAME:
- COVER
$179.00 -
REKLUSE Clutch Cover Kawasaki KX450 2021 RMS-445
REKLUSE
$229.00Off-road riding demands clutch protection that can handle repeated impacts without compromising lubrication or performance. The REKLUSE Clutch Cover for your KX450 delivers the durability you need with a robust billet aluminum construction and increased...09401830- SKU:
- 09401830
- Availability:
- Ships Same Business Day
- Weight:
- 0.95 LBS
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- COVER
- RIDING STYLE:
- ATV
- UNITS:
- EACH
- COLOR/FINISH:
- ANODIZED
- COLOR/FINISH:
- BLACK
- MATERIAL:
- BILLET ALUMINUM
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- CLUTCH
$229.00 -
Rekluse Clutch Cover for Suzuki RM-Z450 2008-2025 RMS-464
REKLUSE
$229.00Stock clutch covers are vulnerable to trail damage and limited oil capacity—a liability when you're pushing hard on technical terrain. The Rekluse RMS-464 replaces that weakness with a billet aluminum cover engineered to absorb impacts while maintaining...09401831- SKU:
- 09401831
- Availability:
- Ships Same Business Day
- Weight:
- 1.00 LBS
- TYPE:
- CLUTCH
- COLOR/FINISH:
- BLACK
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
- COLOR/FINISH:
- ANODIZED
- MATERIAL:
- BILLET ALUMINUM
- PRODUCT NAME:
- COVER
$229.00 -
Rekluse Clutch Cover Yamaha YZ250 1999-2025 RMS-470
REKLUSE
$229.00The stock YZ250 clutch cover leaves your bike vulnerable to trail damage and thermal stress. Rekluse's billet aluminum replacement fortifies your engine case with impact-resistant protection while increasing oil capacity for better cooling during...09401833- SKU:
- 09401833
- Availability:
- Ships Same Business Day
- Weight:
- 0.95 LBS
- PRODUCT NAME:
- COVER
- UNITS:
- EACH
- COLOR/FINISH:
- ANODIZED
- COLOR/FINISH:
- BLACK
- MATERIAL:
- BILLET ALUMINUM
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- CLUTCH
$229.00 -
Rekluse Clutch Cover GasGas EC 450F 2012-2015 Yamaha WR450F 2003-2015 YFZ450R 2009-2020 YZ450F 2005-2009 RMS-473
REKLUSE
$189.00The stock clutch cover on your Gas Gas or Yamaha isn't designed to handle sustained high-performance riding—especially when you're pushing hard on technical terrain. This Rekluse billet aluminum cover increases oil capacity for superior cooling and...09401835- SKU:
- 09401835
- Availability:
- Ships Same Business Day
- Weight:
- 1.05 LBS
- COLOR/FINISH:
- BLACK
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- CLUTCH
- PRODUCT NAME:
- COVER
- RIDING STYLE:
- STREET
- COLOR/FINISH:
- ANODIZED
- MATERIAL:
- BILLET ALUMINUM
- RIDING STYLE:
- ATV
- UNITS:
- EACH
$189.00Qty in Cart: 0Quantity:Price:$189.00Subtotal: -
Rekluse Clutch Cover Yamaha YZ450F 2010-2021 WR450F 2016-2021 YZ450FX 2016-2021 RMS-476
REKLUSE
$229.00If you're running a YZ450F, WR450F, or YZ450FX hard, your clutch cover needs to handle sustained heat, pressure, and trail abuse without compromising engine lubrication. The Rekluse clutch cover increases oil capacity beyond OEM specs, ensuring...09401836- SKU:
- 09401836
- Availability:
- Ships Same Business Day
- Weight:
- 0.95 LBS
- RIDING STYLE:
- STREET
- COLOR/FINISH:
- BLACK
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
- TYPE:
- CLUTCH
- COLOR/FINISH:
- ANODIZED
- MATERIAL:
- BILLET ALUMINUM
- PRODUCT NAME:
- COVER
$229.00
