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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Hot Cams Valve Shim 8.90mm x 2.56mm for KTM 250 SX-F 2005-2011 5PK890256
HOT CAMS
$11.95Valve clearance directly impacts combustion efficiency, throttle response, and engine longevity. Hot Cams valve shims maintain precise tolerances between your cam lobe and valve stem, preventing unwanted wear and ensuring consistent performance across...09261370- SKU:
- 09261370
- Availability:
- Ships Same Business Day
- Weight:
- 0.01 LBS
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- OFF-ROAD
- RIDING STYLE:
- UTV
- RIDING STYLE:
- WATERCRAFT
- VALVE SHIM THICKNESS METRIC:
- 2.56 MM
- RIDING STYLE:
- STREET
- MATERIAL:
- STEEL
- OUTSIDE DIAMETER METRIC:
- 8.90 MM
- PRODUCT NAME:
- SHIM
- RIDING STYLE:
- SNOW
- UNITS:
- 5 PACK
- RIDING STYLE:
- ATV
- TYPE:
- VALVE
$11.95Qty in Cart: 0Quantity:Price:$11.95Subtotal: -
Hot Cams Valve Shim 9.48mm x 1.20mm for Honda CRF450R 2002-2014 5PK948120
HOT CAMS
$10.95Valve clearance directly impacts combustion efficiency, power delivery, and engine longevity—especially in high-revving applications like the CRF450R. Hot Cams valve shims deliver the precision adjustment your engine needs to maintain optimal clearance...09261372- SKU:
- 09261372
- Availability:
- Ships Same Business Day
- Weight:
- 0.06 LBS
- MATERIAL:
- STEEL
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- OFF-ROAD
- RIDING STYLE:
- ATV
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- SHIM
- RIDING STYLE:
- SNOW
- RIDING STYLE:
- UTV
- RIDING STYLE:
- WATERCRAFT
- TYPE:
- VALVE
- UNITS:
- 5 PACK
- OUTSIDE DIAMETER METRIC:
- 9.48 MM
- VALVE SHIM THICKNESS METRIC:
- 1.20 MM
$10.95 -
Hot Cams Valve Shim 9.48 x 1.40 for Honda CRF450R 2002-2023 5PK948140
HOT CAMS
$10.95Valve clearance directly impacts engine efficiency, combustion timing, and overall performance—and worn or incorrect shims compromise all three. The Hot Cams 9.48 x 1.40 shim pack gives you precision-engineered replacements to restore proper valve lash...09261376- SKU:
- 09261376
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- RIDING STYLE:
- ATV
- TYPE:
- VALVE
- MATERIAL:
- STEEL
- OUTSIDE DIAMETER METRIC:
- 9.48 MM
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- OFF-ROAD
- VALVE SHIM THICKNESS METRIC:
- 1.40 MM
- PRODUCT NAME:
- SHIM
- RIDING STYLE:
- SNOW
- RIDING STYLE:
- STREET
- RIDING STYLE:
- UTV
- RIDING STYLE:
- WATERCRAFT
- UNITS:
- 5 PACK
$10.95 -
Hot Cams Valve Shim 9.48mm x 1.45mm for Honda CRF450R 2002-2018 5PK948145
HOT CAMS
$10.95Valve clearance directly impacts combustion efficiency, noise levels, and engine longevity—and these HOT CAMS shims give you precise control over that critical tolerance. Whether you're rebuilding after a top-end refresh or fine-tuning an existing setup,...09261377- SKU:
- 09261377
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- RIDING STYLE:
- ATV
- RIDING STYLE:
- UTV
- RIDING STYLE:
- WATERCRAFT
- TYPE:
- VALVE
- MATERIAL:
- STEEL
- OUTSIDE DIAMETER METRIC:
- 9.48 MM
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- OFF-ROAD
- VALVE SHIM THICKNESS METRIC:
- 1.45 MM
- PRODUCT NAME:
- SHIM
- RIDING STYLE:
- SNOW
- RIDING STYLE:
- STREET
- UNITS:
- 5 PACK
$10.95 -
Hot Cams Valve Shim 9.48mm x 1.50mm for Honda CRF450R 2002-2023 5PK948150
HOT CAMS
$10.95Valve clearance directly impacts engine performance, combustion efficiency, and component longevity—especially critical on high-revving engines like the CRF450R. Hot Cams valve shims ensure precise clearance maintenance without compromising reliability,...09261378- SKU:
- 09261378
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- RIDING STYLE:
- ATV
- TYPE:
- VALVE
- MATERIAL:
- STEEL
- OUTSIDE DIAMETER METRIC:
- 9.48 MM
- PRODUCT NAME:
- SHIM
- RIDING STYLE:
- SNOW
- UNITS:
- 5 PACK
- RIDING STYLE:
- STREET
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- OFF-ROAD
- RIDING STYLE:
- UTV
- RIDING STYLE:
- WATERCRAFT
- VALVE SHIM THICKNESS METRIC:
- 1.50 MM
$10.95 -
Wiseco Valve Kit 2004-2006 Kawasaki KX250F and Suzuki RM-Z250 SVKB4335
WISECO
$365.95Stock valve springs wear down under aggressive riding, causing valve float and losing power when you need it most. The Wiseco SVKB4335 replaces your worn intake and exhaust valves with premium steel units and precision-engineered springs rated for...09263075- SKU:
- 09263075
- Availability:
- Ships Same Business Day
- Weight:
- 0.55 LBS
- APPLICATION:
- INTAKE
- MATERIAL:
- STEEL
- PRODUCT NAME:
- VALVE KIT
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- APPLICATION:
- EXHAUST
$365.95 -
Wiseco Steel Valve Kit for 2009-2010 Kawasaki KX250F SVKB4338
WISECO
$365.95Stock valve springs and steel valves on your 2009-2010 KX250F can't reliably handle the demands of consistent racing or high-RPM riding. This Wiseco Steel Valve Kit replaces those components with precision-engineered intake and exhaust valves paired with...09263077- SKU:
- 09263077
- Availability:
- Ships Same Business Day
- Weight:
- 0.95 LBS
- APPLICATION:
- EXHAUST
- APPLICATION:
- INTAKE
- MATERIAL:
- STEEL
- PRODUCT NAME:
- VALVE KIT
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
$365.95 -
Wiseco Valve Kit KX250F 2011-2016 SVKB4341
WISECO
$365.95Stock valve springs lose tension over time, compromising ignition timing and throttle response on your KX250F. The Wiseco Valve Kit SVKB4341 replaces worn intake and exhaust valves with precision-matched components engineered to handle sustained RPMs and...09263078- SKU:
- 09263078
- Availability:
- Ships Same Business Day
- Weight:
- 0.95 LBS
- APPLICATION:
- EXHAUST
- PRODUCT NAME:
- VALVE KIT
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- APPLICATION:
- INTAKE
- MATERIAL:
- STEEL
$365.95 -
Wiseco Steel Valve Set Kawasaki KX450F 2006-2008 SVKB4406
WISECO
$391.95Your KX450F's valve train demands precision components that can withstand the rigors of competitive riding and high-RPM operation. This Wiseco steel valve set delivers OEM-quality construction with performance-grade materials, ensuring consistent...09263079- SKU:
- 09263079
- Availability:
- Ships Same Business Day
- Weight:
- 0.35 LBS
- APPLICATION:
- EXHAUST
- UNITS:
- KIT
- MATERIAL:
- STEEL
- PRODUCT NAME:
- VALVE KIT
- RIDING STYLE:
- OFF-ROAD
- APPLICATION:
- INTAKE
- RIDING STYLE:
- ATV
$391.95 -
Wiseco Valve Kit KX450F 2009-2018 SVKB4409
WISECO
$391.95Valve train wear is one of the fastest ways to lose compression and throttle response on your KX450F. The Wiseco Valve Kit SVKB4409 replaces worn intake and exhaust valves with precision-engineered components that restore your engine's sealing integrity...09263080- SKU:
- 09263080
- Availability:
- Ships Same Business Day
- Weight:
- 1.15 LBS
- APPLICATION:
- EXHAUST
- MATERIAL:
- STEEL
- PRODUCT NAME:
- VALVE KIT
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- APPLICATION:
- INTAKE
$391.95Qty in Cart: 0Quantity:Price:$391.95Subtotal: -
Wiseco Valve Kit for KTM 250 SX-F 2008-2012 SVKB6329
WISECO
$344.95Keep your KTM 250 SX-F's top-end in peak condition with a complete valve kit engineered to OEM specifications. Wiseco's matched valve and spring set eliminates the guesswork of sourcing individual components, ensuring proper load distribution and...09263082- SKU:
- 09263082
- Availability:
- Ships Same Business Day
- Weight:
- 1.00 LBS
- APPLICATION:
- INTAKE
- MATERIAL:
- STEEL
- PRODUCT NAME:
- VALVE KIT
- RIDING STYLE:
- OFF-ROAD
- APPLICATION:
- EXHAUST
- UNITS:
- KIT
$344.95Qty in Cart: 0Quantity:Price:$344.95Subtotal: -
Wiseco Valve Kit 2012-2016 KTM 350 SX-F SVKB6351
WISECO
$344.95If you're running a 2012-2016 KTM 350 SX-F at the track or trail, valve wear directly impacts combustion efficiency and throttle response. The Wiseco Valve Kit SVKB6351 replaces worn intake and exhaust valves with precision-engineered steel components...09263085- SKU:
- 09263085
- Availability:
- Ships Same Business Day
- Weight:
- 1.05 LBS
- APPLICATION:
- EXHAUST
- APPLICATION:
- INTAKE
- MATERIAL:
- STEEL
- PRODUCT NAME:
- VALVE KIT
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
$344.95 -
Hot Cams Titanium Intake Valve for 2015 Yamaha WR250F 2014-2015 Yamaha YZ250F 8400036-2
HOT CAMS
$123.95Stock intake valves are a common failure point in high-demand 4-stroke engines, especially in competition environments where sustained RPM and heat cycles accelerate wear. The HOT CAMS Titanium Intake Valve delivers the durability and precision sealing...09262637- SKU:
- 09262637
- Availability:
- Ships Same Business Day
- Weight:
- 0.11 LBS
- APPLICATION:
- INTAKE
- PRODUCT NAME:
- VALVE
- RIDING STYLE:
- OFF-ROAD
- BASE COLOR:
- SILVER
- COLOR/FINISH:
- TITANIUM
- MATERIAL:
- NITRIDE COATED
- MATERIAL:
- TITANIUM
- UNITS:
- EACH
$123.95 -
Hot Cams Titanium Exhaust Valve Yamaha YZ250F 2014-2021 8400036-1
HOT CAMS
$110.95If you're pushing your YZ250F to the limit on the track, your stock exhaust valve won't cut it—thermal cycling and sustained RPMs demand a valve engineered for punishment. The HOT CAMS Titanium Exhaust Valve is purpose-built to handle the demands of...09262636- SKU:
- 09262636
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- APPLICATION:
- EXHAUST
- BASE COLOR:
- SILVER
- UNITS:
- EACH
- COLOR/FINISH:
- TITANIUM
- RIDING STYLE:
- OFF-ROAD
- MATERIAL:
- TITANIUM
- PRODUCT NAME:
- VALVE
$110.95 -
Hot Cams Titanium Intake Valve for Honda CRF250R 2010-2017 8400032-2
HOT CAMS
$110.95The HOT CAMS Titanium Intake Valve delivers the precision and durability your CRF250R demands, whether you're pushing lap times or maintaining peak engine efficiency. Factory valves wear under sustained performance—this forged, nitride-coated replacement...09262630- SKU:
- 09262630
- Availability:
- Ships Same Business Day
- Weight:
- 0.06 LBS
- BASE COLOR:
- SILVER
- APPLICATION:
- INTAKE
- RIDING STYLE:
- OFF-ROAD
- COLOR/FINISH:
- TITANIUM
- MATERIAL:
- NITRIDE COATED
- MATERIAL:
- TITANIUM
- UNITS:
- EACH
- PRODUCT NAME:
- VALVE
$110.95 -
Hot Cams Titanium Intake Valve for Kawasaki KX450F 2009-2015 8400031-2
HOT CAMS
$110.95The intake valve is critical to your KX450F's breathing efficiency—a worn or inferior valve directly limits peak power and throttle response. Hot Cams' forged construction and precision machining deliver the reliability of an OEM part with measurably...09262629- SKU:
- 09262629
- Availability:
- Ships Same Business Day
- Weight:
- 0.11 LBS
- BASE COLOR:
- SILVER
- APPLICATION:
- INTAKE
- RIDING STYLE:
- OFF-ROAD
- COLOR/FINISH:
- TITANIUM
- MATERIAL:
- NITRIDE COATED
- MATERIAL:
- TITANIUM
- UNITS:
- EACH
- PRODUCT NAME:
- VALVE
$110.95 -
Hot Cams Titanium Exhaust Valve Kawasaki KX450F 2009-2015 8400031-1
HOT CAMS
$123.95The stock exhaust valve on your KX450F will eventually wear, compromising combustion efficiency and overall engine performance. Hot Cams' titanium exhaust valve is engineered with forged one-piece construction and precision surface treatments to...09262628- SKU:
- 09262628
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- BASE COLOR:
- SILVER
- MATERIAL:
- NITRIDE COATED
- UNITS:
- EACH
- COLOR/FINISH:
- TITANIUM
- RIDING STYLE:
- OFF-ROAD
- APPLICATION:
- EXHAUST
- PRODUCT NAME:
- VALVE
- MATERIAL:
- TITANIUM
$123.95 -
Hot Cams Titanium Intake Valve 2009-2016 Kawasaki KX250F 8400030-2
HOT CAMS
$110.95The intake valve is critical to your KX250F's combustion efficiency and top-end reliability—worn or damaged valves directly compromise throttle response and power delivery. Hot Cams' forged construction and precision machining ensure a perfect seal every...09262627- SKU:
- 09262627
- Availability:
- Ships Same Business Day
- Weight:
- 0.11 LBS
- BASE COLOR:
- SILVER
- MATERIAL:
- NITRIDE COATED
- UNITS:
- EACH
- COLOR/FINISH:
- TITANIUM
- RIDING STYLE:
- OFF-ROAD
- APPLICATION:
- INTAKE
- MATERIAL:
- TITANIUM
- PRODUCT NAME:
- VALVE
$110.95 -
Hot Cams Titanium Intake Valve for Honda CRF450X 2005-2017 8400028-2
HOT CAMS
$86.95If you're running your CRF450X hard—whether on the track or the trail—your intake valves are working at the edge of their limits. The HOT CAMS Titanium Intake Valve replaces worn or damaged stock valves with forged precision engineering that improves...09262624- SKU:
- 09262624
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- MATERIAL:
- TITANIUM
- APPLICATION:
- INTAKE
- PRODUCT NAME:
- VALVE
- BASE COLOR:
- SILVER
- COLOR/FINISH:
- TITANIUM
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
$86.95 -
Hot Cams Titanium Intake Valve for Honda CRF450R 2009-2016 8400027-2
HOT CAMS
$107.95Factory intake valves wear under high RPM and aggressive riding, compromising combustion efficiency and power delivery. The Hot Cams Titanium Intake Valve restores OEM fitment with superior materials and precision engineering, ensuring consistent valve...09262623- SKU:
- 09262623
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- MATERIAL:
- TITANIUM
- APPLICATION:
- INTAKE
- PRODUCT NAME:
- VALVE
- COLOR/FINISH:
- TITANIUM
- MATERIAL:
- NITRIDE COATED
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
- BASE COLOR:
- SILVER
$107.95
