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
-
KIBBLEWHITE Exhaust Valve 80-81316
KIBBLEWHITE
$37.55Exhaust valves endure extreme temperatures and constant cycling—factory originals wear quickly under high-performance demands. The KIBBLEWHITE Black Diamond™ valve delivers the durability and reliability serious racers and engine builders need, with a...09263030- SKU:
- 09263030
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- MATERIAL:
- STAINLESS STEEL
- PRODUCT NAME:
- VALVE
- RIDING STYLE:
- ATV
- UNITS:
- EACH
- MODEL:
- BLACK DIAMOND™
- STEM DIAMETER IMPERIAL:
- 0.1760'
- TULIP ANGLE:
- 25°
- HEAD DIAMETER METRIC:
- 26.00 MM
- LENGTH IMPERIAL:
- 3.470'
- APPLICATION:
- EXHAUST
$37.55Qty in Cart: 0Quantity:Price:$37.55Subtotal: -
KIBBLEWHITE Intake Valve Kit 40-41450
KIBBLEWHITE
$185.23If you're running high-RPM applications or endurance racing, valve degradation is one of the quickest paths to catastrophic engine failure. The KIBBLEWHITE 40-41450 Intake Valve Kit replaces stock titanium valves with purpose-built stainless steel...09263154- SKU:
- 09263154
- Availability:
- Ships Same Business Day
- Weight:
- 0.51 LBS
- SPRING LIFT:
- 0,415'
- TYPE:
- CONVERSION
- PRODUCT NAME:
- VALVE KIT
- RIDING STYLE:
- OFF-ROAD
- SPRING OPEN PRESSURE:
- 181 LB
- SPRING SEAT PRESSURE:
- 65 LB
- UNITS:
- KIT
- APPLICATION:
- INTAKE
- MATERIAL:
- STEEL
- SPRING LIFT IMPERIAL:
- 0.415'
$185.23Qty in Cart: 0Quantity:Price:$185.23Subtotal: -
KIBBLEWHITE Valve Guide 96-96521
KIBBLEWHITE
$24.89Valve guide wear is one of the quickest ways to lose compression, increase oil consumption, and compromise engine reliability. The KIBBLEWHITE 96-96521 valve guide delivers the thermal management and durability required for sustained high-RPM operation,...09263157- SKU:
- 09263157
- Availability:
- Ships Same Business Day
- Weight:
- 0.01 LBS
- APPLICATION:
- INTAKE
- RIDING STYLE:
- OFF-ROAD
- SIZE IMPERIAL:
- OVERSIZE (+0.001')
- UNITS:
- EACH
- INSIDE DIAMETER IMPERIAL:
- 0.2353'
- MATERIAL:
- C630 BRONZE
- OUTSIDE DIAMETER IMPERIAL:
- 0.4362'
- PRODUCT NAME:
- VALVE GUIDE
$24.89Qty in Cart: 0Quantity:Price:$24.89Subtotal: -
KIBBLEWHITE Valve Conversion Kit 80-82350
KIBBLEWHITE
$172.15If you're running your engine hard, OEM titanium intake valves will only take you so far before thermal fatigue and wear force a costly rebuild. The KIBBLEWHITE Valve Conversion Kit replaces them with forged stainless steel Black Diamond intake valves...09263177- SKU:
- 09263177
- Availability:
- Ships Same Business Day
- Weight:
- 0.46 LBS
- SPRING LIFT:
- 0,420'
- SPRING SEAT PRESSURE:
- 69 LB
- APPLICATION:
- INTAKE
- MATERIAL:
- STEEL
- PRODUCT NAME:
- VALVE KIT
- RIDING STYLE:
- OFF-ROAD
- SPRING LIFT IMPERIAL:
- 0.420'
- SPRING OPEN PRESSURE:
- 187 LB
- TYPE:
- CONVERSION
- UNITS:
- KIT
$172.15Qty in Cart: 0Quantity:Price:$172.15Subtotal: -
KIBBLEWHITE Intake Valve 80-82312
KIBBLEWHITE
$31.01If you're building or rebuilding an engine that demands reliability under sustained high RPM operation, intake valve quality directly impacts combustion efficiency and longevity. The KIBBLEWHITE Black Diamond™ Intake Valve is engineered to withstand...09263178- SKU:
- 09263178
- Availability:
- Ships Same Business Day
- Weight:
- 0.06 LBS
- STEM DIAMETER IMPERIAL:
- 0.1962'
- HEAD DIAMETER METRIC:
- 31.00 MM
- LENGTH IMPERIAL:
- 3.245'
- MATERIAL:
- STEEL
- PRODUCT NAME:
- VALVE
- RIDING STYLE:
- OFF-ROAD
- TULIP ANGLE:
- 18°
- APPLICATION:
- INTAKE
- MODEL:
- BLACK DIAMOND™
- UNITS:
- EACH
$31.01 -
On Sale
KIBBLEWHITE Valve Spring Kit 82-83400
KIBBLEWHITE
MSRP: $355.95Now: $228.00Was: $355.95Valve spring performance directly impacts your engine's RPM ceiling, valve sealing integrity, and overall reliability under sustained load. KIBBLEWHITE's complete spring kits eliminate the guesswork of sourcing individual components, giving you a proven...09263295- SKU:
- 09263295
- Availability:
- Ships Same Business Day
- Weight:
- 1.25 LBS
- APPLICATION:
- INTAKE
- PRODUCT NAME:
- SPRING KIT
- RIDING STYLE:
- ATV
- SPRING LIFT IMPERIAL:
- 0.450'
- MATERIAL:
- TITANIUM
- MATERIAL:
- VITON
- SPRING SEAT PRESSURE:
- 64 LB
- APPLICATION:
- EXHAUST
- SPRING OPEN PRESSURE:
- 181 LB
- TYPE:
- VALVE
- MATERIAL:
- HIGH TENSILE STEEL
- SPRING LIFT:
- 0,450'
- UNITS:
- KIT
MSRP: $355.95Now: $228.00Was: $355.95Qty in Cart: 0Quantity:Price:MSRP: $355.95Now: $228.00Was: $355.95Subtotal: -
KIBBLEWHITE Cylinder Head Service Kit 30-33460
KIBBLEWHITE
$403.24A complete top-end refresh requires precision components engineered to withstand the demands of high-RPM racing. The KIBBLEWHITE Cylinder Head Service Kit 30-33460 consolidates every critical component needed to restore flow, durability, and performance...09263225- SKU:
- 09263225
- Availability:
- Ships Same Business Day
- Weight:
- 2.71 LBS
- APPLICATION:
- EXHAUST
- MATERIAL:
- TITANIUM
- SPRING LIFT:
- 0,300'
- MATERIAL:
- C630 BRONZE
- SPRING OPEN PRESSURE:
- 157 LB
- UNITS:
- KIT
- APPLICATION:
- INTAKE
- MODEL:
- BLACK DIAMOND™
- PRODUCT NAME:
- CYLINDER HEAD SERVICE KIT
- RIDING STYLE:
- ATV
- SPRING LIFT IMPERIAL:
- 0.300'
- SPRING SEAT PRESSURE:
- 70 LB
$403.24Qty in Cart: 0Quantity:Price:$403.24Subtotal: -
KIBBLEWHITE Intake Valve - CRF150R - Standard 30-30910
KIBBLEWHITE
$37.55OEM valves wear down with hard use, causing compression loss and throttle response lag that compounds over time. The Kibblewhite Black Diamond™ intake valve restores full flow efficiency while delivering the durability needed for sustained high-RPM...09260298- SKU:
- 09260298
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- MODEL:
- BLACK DIAMOND™
- STEM DIAMETER IMPERIAL:
- 0.1765'
- MATERIAL:
- STAINLESS STEEL
- PRODUCT NAME:
- VALVE
- APPLICATION:
- INTAKE
- TULIP ANGLE:
- 19°
- UNITS:
- EACH
- HEAD DIAMETER METRIC:
- 26.00 MM
- LENGTH IMPERIAL:
- 3.065'
- RIDING STYLE:
- OFF-ROAD
$37.55Qty in Cart: 0Quantity:Price:$37.55Subtotal: -
KIBBLEWHITE Intake Valve 40-40412
KIBBLEWHITE
$31.01Kibblewhite's Black Diamond™ intake valves are engineered for engines that demand precision and longevity. Built from EV8 stainless steel forgings, these valves deliver reduced friction and exceptional wear resistance—critical for high-RPM applications...09261649- SKU:
- 09261649
- Availability:
- Ships Same Business Day
- Weight:
- 0.08 LBS
- RIDING STYLE:
- UTV
- APPLICATION:
- INTAKE
- HEAD DIAMETER METRIC:
- 30.00 MM
- MATERIAL:
- STAINLESS STEEL
- MODEL:
- BLACK DIAMOND™
- PRODUCT NAME:
- VALVE
- LENGTH IMPERIAL:
- 3.600'
- RIDING STYLE:
- ATV
- STEM DIAMETER IMPERIAL:
- 0.1960'
- TULIP ANGLE:
- 10°
- UNITS:
- EACH
$31.01 -
KIBBLEWHITE Exhaust Valve Guide 96-96280
KIBBLEWHITE
$24.89Valve guide wear is one of the most common culprits behind oil consumption, loss of compression, and erratic idle in high-performance engines. The KIBBLEWHITE Exhaust Valve Guide 96-96280 replaces worn guides with precision-engineered components that...09261716- SKU:
- 09261716
- Availability:
- Ships Same Business Day
- Weight:
- 0.02 LBS
- INSIDE DIAMETER IMPERIAL:
- 0.1960'
- MATERIAL:
- C630 BRONZE
- SIZE IMPERIAL:
- STANDARD
- UNITS:
- EACH
- APPLICATION:
- EXHAUST
- OUTSIDE DIAMETER IMPERIAL:
- 0.3958'
- PRODUCT NAME:
- VALVE GUIDE
- RIDING STYLE:
- OFF-ROAD
$24.89 -
Hot Cams Valve Shim 10.0 x 2.80 for 2008-2010 KTM 530 EXC-R 5PK1000280
HOT CAMS
$10.95Valve clearance directly impacts your 530 EXC-R's power delivery, fuel efficiency, and engine longevity—and shim wear is inevitable with high-mileage performance riding. This 5-pack of precision-engineered Hot Cams shims lets you maintain tight...09261293- SKU:
- 09261293
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
- PRODUCT NAME:
- SHIM
- TYPE:
- VALVE
- UNITS:
- 5 PACK
- VALVE SHIM THICKNESS METRIC:
- 2.80 MM
- OUTSIDE DIAMETER METRIC:
- 10.00 MM
$10.95Qty in Cart: 0Quantity:Price:$10.95Subtotal: -
Hot Cams Exhaust Valve Steel Honda CRF450R 2013-2020 8400027-5
HOT CAMS
$54.95The exhaust valve is critical to your CRF450R's combustion efficiency—a worn or inferior valve directly impacts power delivery, fuel economy, and engine longevity. The HOT CAMS 8400027-5 is a forged, precision-engineered replacement that restores OEM...09262913- SKU:
- 09262913
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- COLOR/FINISH:
- BLACK
- STEM DIAMETER METRIC:
- 4.980 MM
- APPLICATION:
- EXHAUST
- BASE COLOR:
- BLACK
- PRODUCT NAME:
- VALVE
- UNITS:
- EACH
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
$54.95 -
Hot Cams Valve Shim 10.00mm x 2.20mm for 2008-2010 KTM 530 EXC-R 5PK1000220
HOT CAMS
$10.95Valve clearance directly affects your 530 EXC-R's combustion efficiency, fuel economy, and engine longevity. Over time, thermal cycling causes shims to wear, requiring periodic replacement to maintain precise tolerances. This 5-pack of HOT CAMS shims...09261281- SKU:
- 09261281
- Availability:
- Ships Same Business Day
- Weight:
- 0.01 LBS
- OUTSIDE DIAMETER METRIC:
- 10.00 MM
- TYPE:
- VALVE
- MATERIAL:
- STEEL
- PRODUCT NAME:
- SHIM
- UNITS:
- 5 PACK
- RIDING STYLE:
- OFF-ROAD
- VALVE SHIM THICKNESS METRIC:
- 2.20 MM
$10.95Qty in Cart: 0Quantity:Price:$10.95Subtotal: -
Hot Cams Valve Shim 7.48mm x 1.95mm for Honda CRF 250R 2004-2017 5PK748195
HOT CAMS
$10.95Valve clearance drift is inevitable in high-mileage engines—even small deviations reduce combustion efficiency and accelerate wear. Hot Cams valve shims deliver the precision adjustment your CRF 250R needs to maintain peak performance and extend engine...09261317- SKU:
- 09261317
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- VALVE
- VALVE SHIM THICKNESS METRIC:
- 1.95 MM
- OUTSIDE DIAMETER METRIC:
- 7.48 MM
- PRODUCT NAME:
- SHIM
- RIDING STYLE:
- STREET
- UNITS:
- 5 PACK
$10.95 -
Hot Cams Valve Shim 7.48mm x 2.10mm for Honda CRF150R 2007-2016 5PK748210
HOT CAMS
$10.95Valve clearance directly impacts your CRF150R's horsepower delivery, fuel efficiency, and engine longevity. Hot Cams valve shims are precision-engineered to maintain exact tolerances, preventing costly valve train wear and ensuring consistent performance...09261320- SKU:
- 09261320
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
- OUTSIDE DIAMETER METRIC:
- 7.48 MM
- RIDING STYLE:
- STREET
- VALVE SHIM THICKNESS METRIC:
- 2.10 MM
- PRODUCT NAME:
- SHIM
- TYPE:
- VALVE
- UNITS:
- 5 PACK
$10.95 -
Hot Cams Valve Shim 7.48mm x 2.15mm for Honda CRF 150R 2007-2018 5PK748215
HOT CAMS
$10.95Valve shim clearance directly impacts cam timing accuracy and engine responsiveness—neglect it, and you'll lose horsepower and risk valve damage. The Hot Cams 7.48mm x 2.15mm Valve Shim pack gives you five precision-manufactured shims to maintain optimal...09261321- SKU:
- 09261321
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- VALVE SHIM THICKNESS METRIC:
- 2.15 MM
- OUTSIDE DIAMETER METRIC:
- 7.48 MM
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- SHIM
- TYPE:
- VALVE
- UNITS:
- 5 PACK
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
$10.95 -
Hot Cams Valve Shim 7.48mm x 3.30mm for Honda CRF 150R 2007-2018 5PK748330
HOT CAMS
$10.95Valve clearance directly impacts combustion efficiency, valve train longevity, and overall engine performance—even small deviations can cause valves to float or create excessive wear. Hot Cams valve shims give you precision control over clearance...09261344- SKU:
- 09261344
- Availability:
- Ships Same Business Day
- Weight:
- 0.06 LBS
- OUTSIDE DIAMETER METRIC:
- 7.48 MM
- PRODUCT NAME:
- SHIM
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- UTV
- RIDING STYLE:
- WATERCRAFT
- VALVE SHIM THICKNESS METRIC:
- 3.30 MM
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
- RIDING STYLE:
- SNOW
- UNITS:
- 5 PACK
- RIDING STYLE:
- STREET
- RIDING STYLE:
- ATV
- TYPE:
- VALVE
$10.95Qty in Cart: 0Quantity:Price:$10.95Subtotal: -
Hot Cams Valve Shim 9.48mm x 3.05mm for Honda CRF450R 2002-2018 5PK948305
HOT CAMS
$10.95Valve shim wear directly impacts engine efficiency and responsiveness. Hot Cams Valve Shims maintain precise valve clearance, which is critical for proper combustion timing and consistent performance across your CRF450R's rev range. This 5-pack ensures...09261409- SKU:
- 09261409
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- MATERIAL:
- STEEL
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- OFF-ROAD
- RIDING STYLE:
- UTV
- RIDING STYLE:
- WATERCRAFT
- VALVE SHIM THICKNESS METRIC:
- 3.05 MM
- RIDING STYLE:
- ATV
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- SHIM
- RIDING STYLE:
- SNOW
- UNITS:
- 5 PACK
- OUTSIDE DIAMETER METRIC:
- 9.48 MM
- TYPE:
- VALVE
$10.95 -
Hot Cams Valve Shim Kit 9.48mm x 3.50mm for Honda CRF450R 2002-2014 HCSHIM02
HOT CAMS
$9.95Valve clearance directly impacts combustion efficiency, fuel economy, and engine longevity—and improper clearance accelerates wear on cam lobes and rocker arms. This Hot Cams valve shim kit gives you precise control over clearance tolerances on your...09261418- SKU:
- 09261418
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- OUTSIDE DIAMETER METRIC:
- 9.48 MM
- RIDING STYLE:
- ATV
- TYPE:
- VALVE
- PRODUCT NAME:
- SHIM
- RIDING STYLE:
- SNOW
- UNITS:
- 5 PACK
- RIDING STYLE:
- STREET
- VALVE SHIM THICKNESS METRIC:
- 3.50 MM
- MATERIAL:
- STEEL
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- OFF-ROAD
- RIDING STYLE:
- UTV
- RIDING STYLE:
- WATERCRAFT
$9.95Qty in Cart: 0Quantity:Price:$9.95Subtotal: -
Hot Cams Valve Shim 7.48mm x 2.50mm for Honda CRF 150R 2007-2018 5PK748250
HOT CAMS
$10.95Valve shim clearance directly impacts combustion efficiency, valve timing accuracy, and overall engine longevity. The HOT CAMS 7.48 x 2.50mm shim pack gives you five precision-ground replacements to maintain tight tolerances on your Honda CRF 150R,...09261328- SKU:
- 09261328
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- RIDING STYLE:
- ATV
- TYPE:
- VALVE
- MATERIAL:
- STEEL
- PRODUCT NAME:
- SHIM
- RIDING STYLE:
- SNOW
- UNITS:
- 5 PACK
- VALVE SHIM THICKNESS METRIC:
- 2.50 MM
- OUTSIDE DIAMETER METRIC:
- 7.48 MM
- RIDING STYLE:
- STREET
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- OFF-ROAD
- RIDING STYLE:
- UTV
- RIDING STYLE:
- WATERCRAFT
$10.95
