Dirt Bike Engine Valves and Parts
Dirt Bike Engine Valves & Parts: Kibblewhite Black Diamond Exhaust Valves & Spring Kits at JJ Motorsports
Upgrade your dirt bike's valvetrain for maximum flow, heat resistance, and durability with premium valves and parts from JJ Motorsports, precision-engineered for superior performance in motocross, enduro, and trail riding. Our selection includes Black Diamond stainless steel exhaust valves, high-RPM spring kits, keepers, seals, and guides designed for increased lift, reduced wear, and reliable operation under extreme valve float conditions. Compatible with popular 4-stroke models like Honda CRF, Yamaha YZ/WR, KTM SX/EXC, and more, these Kibblewhite components feature one-piece forging, nitride coatings, and dual-spring technology to enhance airflow, prevent valve train failure, and support big-bore or high-compression builds. From exhaust valves with swirl-polished stems to titanium retainer spring kits for lightweight strength, rebuild your cylinder head for championship-level power, longevity, and confidence on every rev.
Shop trusted brands like Kibblewhite for race-proven quality. Explore related categories such as dirt bike piston and ring kits for full top-end rebuilds or dirt bike engine for camshafts and gaskets.
Top Dirt Bike Valve & Parts
- Kibblewhite Valve - Exhaust - Black Diamond 30-33616 – One-piece Black Diamond stainless steel exhaust valve with nitride coating, swirl-polished stem, and hard tip; designed for high-RPM durability and flow in 4-stroke engines.
- Kibblewhite Spring Kit 40-41600 – Dual-spring kit with titanium retainers, chromoly seats, and high-strength springs; supports increased lift and RPM while preventing valve float in performance builds.
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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MOOSE RACING Exhaust Valve M30-34010
MOOSE RACING
$196.95Stock exhaust valves reach their limits in high-performance applications, leading to premature wear and reduced engine reliability. The MOOSE RACING M30-34010 extends valve train life up to 4x longer than OEM titanium components while delivering improved...09263374- SKU:
- 09263374
- Availability:
- Ships Same Business Day
- Weight:
- 0.46 LBS
$196.95 -
MOOSE RACING Valve Seal Kit M30-34020
MOOSE RACING
$15.95Worn or degraded valve seals cause oil consumption, compression loss, and poor combustion efficiency—problems that compound quickly under racing or high-load conditions. The MOOSE RACING M30-34020 Valve Seal Kit delivers precision-engineered seals with...09263375- SKU:
- 09263375
- Availability:
- Ships Same Business Day
- Weight:
- 0.06 LBS
$15.95 -
MOOSE RACING Valve Seal Kit M40-41680
MOOSE RACING
$15.95Engine valve seals naturally degrade under heat and combustion pressures, leading to oil leakage, blue smoke, and reduced compression. The MOOSE RACING Valve Seal Kit M40-41680 replaces worn seals with precision-engineered components that restore proper...09263376- SKU:
- 09263376
- Availability:
- Ships Same Business Day
- Weight:
- 0.06 LBS
$15.95Qty in Cart: 0Quantity:Price:$15.95Subtotal: -
MOOSE RACING Valve Shim - 7.48 x 2.25 - 5 pack MSE5PK748225
MOOSE RACING
$9.95Proper valve clearance is critical to engine performance and longevity—too tight and you risk bent valves; too loose and you lose compression and efficiency. These MOOSE RACING valve shims give you precise adjustment capability without guesswork, and the...09261879- SKU:
- 09261879
- Availability:
- Ships Same Business Day
- Weight:
- 0.02 LBS
- OUTSIDE DIAMETER METRIC:
- 7.48 MM
- PRODUCT NAME:
- SHIM
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- SNOW
- RIDING STYLE:
- STREET
- UNITS:
- 5 PACK
- MATERIAL:
- ROLLED
- MATERIAL:
- STEEL
- RIDING STYLE:
- ATV
- RIDING STYLE:
- OFF-ROAD
- VALVE SHIM THICKNESS METRIC:
- 2.25 MM
- RIDING STYLE:
- UTV
- RIDING STYLE:
- WATERCRAFT
- TYPE:
- VALVE
$9.95 -
MOOSE RACING Valve Shim - 9.48 x 1.60 - 5 pack MSE5PK948160
MOOSE RACING
$9.95Maintaining precise valve clearances is critical to engine performance and longevity—even a few thousandths of an inch off can result in lost power, valve float, or premature wear. MOOSE Racing valve shims give you the accuracy and durability needed to...09261936- SKU:
- 09261936
- Availability:
- Ships Same Business Day
- Weight:
- 0.02 LBS
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
- RIDING STYLE:
- UTV
- OUTSIDE DIAMETER METRIC:
- 9.48 MM
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- ATV
- RIDING STYLE:
- STREET
- MATERIAL:
- ROLLED
- PRODUCT NAME:
- SHIM
- RIDING STYLE:
- SNOW
- RIDING STYLE:
- WATERCRAFT
- TYPE:
- VALVE
- UNITS:
- 5 PACK
- VALVE SHIM THICKNESS METRIC:
- 1.60 MM
$9.95 -
MOOSE RACING Valve Shim - 9.48 x 2.90 - 5 pack MSE5PK948290
MOOSE RACING
$9.95Maintaining precise valve clearances is critical to engine performance and longevity, and having quality shims on hand ensures you can make accurate adjustments without delays. MOOSE RACING valve shims are forged from 4140 cold rolled steel—a material...09261962- SKU:
- 09261962
- Availability:
- Ships Same Business Day
- Weight:
- 0.02 LBS
- OUTSIDE DIAMETER METRIC:
- 9.48 MM
- RIDING STYLE:
- SNOW
- VALVE SHIM THICKNESS METRIC:
- 2.90 MM
- MATERIAL:
- ROLLED
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
- PRODUCT NAME:
- SHIM
- RIDING STYLE:
- UTV
- RIDING STYLE:
- WATERCRAFT
- TYPE:
- VALVE
- UNITS:
- 5 PACK
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- ATV
- RIDING STYLE:
- STREET
$9.95 -
MOOSE RACING Valve Shim - 7.48 x 2.15 - 5 pack MSE5PK748215
MOOSE RACING
$9.95Proper valve shim sizing is critical for maintaining correct valve clearances and ensuring optimal engine performance across your entire valve train. These forged 4140 steel shims are built to withstand repeated thermal cycling and adjustment cycles...09261877- SKU:
- 09261877
- Availability:
- Ships Same Business Day
- Weight:
- 0.02 LBS
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- SNOW
- VALVE SHIM THICKNESS METRIC:
- 2.15 MM
- MATERIAL:
- ROLLED
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
- OUTSIDE DIAMETER METRIC:
- 7.48 MM
- RIDING STYLE:
- ATV
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- SHIM
- RIDING STYLE:
- UTV
- RIDING STYLE:
- WATERCRAFT
- TYPE:
- VALVE
- UNITS:
- 5 PACK
$9.95 -
MOOSE RACING Valve Seal Kit M80-80710
MOOSE RACING
$19.95Valve seal degradation is one of the most common causes of oil consumption and compression loss in high-mileage engines. The MOOSE RACING Valve Seal Kit M80-80710 replaces worn OEM seals with precision-engineered components that maintain consistent...09262831- SKU:
- 09262831
- Availability:
- Ships Same Business Day
- Weight:
- 0.11 LBS
- APPLICATION:
- INTAKE
- RIDING STYLE:
- ATV
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- MATERIAL:
- VITON
- APPLICATION:
- EXHAUST
- BASE COLOR:
- RED
- TYPE:
- VALVE STEM
- COLOR/FINISH:
- RED
- PRODUCT NAME:
- SEAL KIT
$19.95 -
MOOSE RACING Valve Seal Kit M80-80890
MOOSE RACING
$15.95OEM valve seals degrade under sustained heat and combustion pressures, leading to oil consumption, blowby, and performance loss. The MOOSE RACING Valve Seal Kit M80-80890 replaces worn seals with precision-engineered components that maintain consistent...09262833- SKU:
- 09262833
- Availability:
- Ships Same Business Day
- Weight:
- 0.11 LBS
- PRODUCT NAME:
- SEAL KIT
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- APPLICATION:
- EXHAUST
- BASE COLOR:
- RED
- MATERIAL:
- VITON
- TYPE:
- VALVE STEM
- APPLICATION:
- INTAKE
- COLOR/FINISH:
- RED
- RIDING STYLE:
- ATV
$15.95Qty in Cart: 0Quantity:Price:$15.95Subtotal: -
MOOSE RACING Valve Seal Kit M80-80990
MOOSE RACING
$15.95Valve seal degradation causes oil burning, compression loss, and increased emissions—problems that compound quickly under racing conditions or high-mileage operation. The MOOSE RACING Valve Seal Kit M80-80990 replaces worn seals with precision-engineered...09262834- SKU:
- 09262834
- Availability:
- Ships Same Business Day
- Weight:
- 0.06 LBS
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- APPLICATION:
- EXHAUST
- APPLICATION:
- INTAKE
- COLOR/FINISH:
- RED
- PRODUCT NAME:
- SEAL KIT
- BASE COLOR:
- RED
- MATERIAL:
- VITON
- TYPE:
- VALVE STEM
$15.95 -
MOOSE RACING Intake Valve Kit M80-80950
MOOSE RACING
$307.95If you're running a high-performance engine, your intake valves are under constant thermal and mechanical stress. OEM titanium valves wear faster than necessary, forcing costly rebuilds and downtime. The MOOSE RACING Intake Valve Kit M80-80950 replaces...09262459- SKU:
- 09262459
- Availability:
- Ships Same Business Day
- Weight:
- 0.51 LBS
- APPLICATION:
- INTAKE
- PRODUCT NAME:
- VALVE KIT
- RIDING STYLE:
- ATV
- RIDING STYLE:
- OFF-ROAD
- MATERIAL:
- STAINLESS STEEL
- UNITS:
- KIT
$307.95 -
MOOSE RACING Valve Shim - 7.48 x 2.05 - 5 pack MSE5PK748205
MOOSE RACING
$9.95Valve shim maintenance is critical to precision engine tuning, and having a complete refill kit on hand eliminates downtime during valve train adjustments. These forged 4140 shims deliver consistent thickness tolerances that directly impact valve...09261875- SKU:
- 09261875
- Availability:
- Ships Same Business Day
- Weight:
- 0.02 LBS
- RIDING STYLE:
- ATV
- TYPE:
- VALVE
- RIDING STYLE:
- OFF-ROAD
- RIDING STYLE:
- UTV
- RIDING STYLE:
- WATERCRAFT
- OUTSIDE DIAMETER METRIC:
- 7.48 MM
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- STREET
- VALVE SHIM THICKNESS METRIC:
- 2.05 MM
- MATERIAL:
- ROLLED
- MATERIAL:
- STEEL
- PRODUCT NAME:
- SHIM
- RIDING STYLE:
- SNOW
- UNITS:
- 5 PACK
$9.95Qty in Cart: 0Quantity:Price:$9.95Subtotal: -
MOOSE RACING Valve Shim - 7.48 x 2.10 - 5 pack MSE5PK748210
MOOSE RACING
$9.95Precision valve train maintenance demands reliable, durable shims that won't compromise your engine's calibration. These MOOSE RACING shims are forged from 4140 cold-rolled steel—not sintered—giving you superior strength and consistency across multiple...09261876- SKU:
- 09261876
- Availability:
- Ships Same Business Day
- Weight:
- 0.01 LBS
- PRODUCT NAME:
- SHIM
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- SNOW
- RIDING STYLE:
- STREET
- UNITS:
- 5 PACK
- MATERIAL:
- ROLLED
- MATERIAL:
- STEEL
- RIDING STYLE:
- UTV
- RIDING STYLE:
- WATERCRAFT
- TYPE:
- VALVE
- OUTSIDE DIAMETER METRIC:
- 7.48 MM
- RIDING STYLE:
- ATV
- RIDING STYLE:
- OFF-ROAD
- VALVE SHIM THICKNESS METRIC:
- 2.10 MM
$9.95 -
MOOSE RACING Valve Shim - 7.48 x 2.95 - 5 pack MSE5PK748295
MOOSE RACING
$9.95Valve shim maintenance is critical to maintaining proper valve clearance and engine performance—spec drift in your valve train directly impacts combustion efficiency and longevity. This 5-pack of MOOSE Racing shims ensures you have precision sizing on...09261893- SKU:
- 09261893
- Availability:
- Ships Same Business Day
- Weight:
- 0.01 LBS
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- SNOW
- RIDING STYLE:
- STREET
- MATERIAL:
- ROLLED
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
- PRODUCT NAME:
- SHIM
- RIDING STYLE:
- UTV
- RIDING STYLE:
- WATERCRAFT
- TYPE:
- VALVE
- UNITS:
- 5 PACK
- OUTSIDE DIAMETER METRIC:
- 7.48 MM
- RIDING STYLE:
- ATV
- VALVE SHIM THICKNESS METRIC:
- 2.95 MM
$9.95Qty in Cart: 0Quantity:Price:$9.95Subtotal: -
MOOSE RACING Valve Shim Kit - 8.90 mm MSEHCSHIM00
MOOSE RACING
$86.95Maintaining proper valve clearance is critical to engine reliability and performance—even a few thousandths of an inch off can cause misfires, valve float, or catastrophic damage. MOOSE Racing's 8.90 mm valve shim kit eliminates guesswork with...09261826- SKU:
- 09261826
- Availability:
- Ships Same Business Day
- Weight:
- 0.51 LBS
- MATERIAL:
- ROLLED
- OUTSIDE DIAMETER METRIC:
- 8.90 MM
- RIDING STYLE:
- UTV
- RIDING STYLE:
- WATERCRAFT
- TYPE:
- VALVE
- PRODUCT NAME:
- SHIM KIT
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- SNOW
- RIDING STYLE:
- STREET
- MATERIAL:
- STEEL
- RIDING STYLE:
- ATV
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
$86.95 -
MOOSE RACING Valve Seal Kit M96-96320
MOOSE RACING
$15.95Valve seals are critical to maintaining compression and preventing oil burn-off in high-performance engines. Over time, OEM seals degrade from heat cycling and combustion pressures, leading to blow-by, increased emissions, and power loss. The MOOSE...09262836- SKU:
- 09262836
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- PRODUCT NAME:
- SEAL KIT
- TYPE:
- VALVE STEM
- UNITS:
- KIT
- APPLICATION:
- EXHAUST
- APPLICATION:
- INTAKE
- COLOR/FINISH:
- RED
- BASE COLOR:
- RED
- MATERIAL:
- VITON
- RIDING STYLE:
- OFF-ROAD
$15.95 -
MOOSE RACING Valve Seal Kit M96-96350
MOOSE RACING
$15.95Valve seals are your engine's first line of defense against oil migration and combustion blow-by—degraded seals lead to oil consumption, hard starting, and eventual ring damage. The MOOSE RACING M96-96350 replaces worn seals with precision-engineered...09262837- SKU:
- 09262837
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- COLOR/FINISH:
- RED
- MATERIAL:
- VITON
- APPLICATION:
- INTAKE
- BASE COLOR:
- RED
- RIDING STYLE:
- ATV
- PRODUCT NAME:
- SEAL KIT
- UNITS:
- KIT
- APPLICATION:
- EXHAUST
- TYPE:
- VALVE STEM
$15.95Qty in Cart: 0Quantity:Price:$15.95Subtotal: -
MOOSE RACING Valve Seal Kit M96-96380
MOOSE RACING
$15.95Valve seal degradation is one of the most insidious sources of oil leakage and blow-by in high-performance engines—issues that directly compromise compression, increase emissions, and rob you of power output. The MOOSE RACING M96-96380 Valve Seal Kit...09262839- SKU:
- 09262839
- Availability:
- Ships Same Business Day
- Weight:
- 0.11 LBS
- MATERIAL:
- VITON
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- APPLICATION:
- INTAKE
- COLOR/FINISH:
- RED
- PRODUCT NAME:
- SEAL KIT
- APPLICATION:
- EXHAUST
- BASE COLOR:
- RED
- TYPE:
- VALVE STEM
$15.95Qty in Cart: 0Quantity:Price:$15.95Subtotal: -
MOOSE RACING Valve Shim - 9.48 x 1.65 - 5 pack MSE5PK948165
MOOSE RACING
$9.95Maintaining precise valve clearances is critical for engine performance and longevity—and having quality shims on hand eliminates downtime during valve adjustments. These MOOSE RACING shims are forged from 4140 cold rolled steel for durability and...09261937- SKU:
- 09261937
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- PRODUCT NAME:
- SHIM
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- STREET
- RIDING STYLE:
- UTV
- RIDING STYLE:
- WATERCRAFT
- UNITS:
- 5 PACK
- RIDING STYLE:
- ATV
- TYPE:
- VALVE
- VALVE SHIM THICKNESS METRIC:
- 1.65 MM
- MATERIAL:
- ROLLED
- MATERIAL:
- STEEL
- OUTSIDE DIAMETER METRIC:
- 9.48 MM
- RIDING STYLE:
- OFF-ROAD
- RIDING STYLE:
- SNOW
$9.95Qty in Cart: 0Quantity:Price:$9.95Subtotal: -
MOOSE RACING Valve Shim - 9.48 x 1.85 - 5 pack MSE5PK948185
MOOSE RACING
$9.95Valve shim maintenance is critical to proper engine tuning and longevity—getting the right sizes on hand eliminates guesswork during valve adjustments. MOOSE RACING's forged 4140 steel shims are precision-manufactured to exact tolerances, ensuring...09261941- SKU:
- 09261941
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- PRODUCT NAME:
- SHIM
- RIDING STYLE:
- UTV
- RIDING STYLE:
- WATERCRAFT
- RIDING STYLE:
- ATV
- TYPE:
- VALVE
- VALVE SHIM THICKNESS METRIC:
- 1.85 MM
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- STREET
- MATERIAL:
- ROLLED
- MATERIAL:
- STEEL
- OUTSIDE DIAMETER METRIC:
- 9.48 MM
- RIDING STYLE:
- OFF-ROAD
- RIDING STYLE:
- SNOW
- UNITS:
- 5 PACK
$9.95
