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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On Sale
KIBBLEWHITE Intake Valve 40-4372H
KIBBLEWHITE
MSRP: $54.10Now: $48.69Was: $54.10If you're serious about engine reliability and peak performance, valve quality isn't an area to compromise. The KIBBLEWHITE Intake Valve 40-4372H delivers the durability and precision needed for both...KW404372H- SKU:
- KW404372H
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- APPLICATION:
- INTAKE
- HEAD DIAMETER METRIC:
- 29.00 MM
- MATERIAL:
- STEEL
- PRODUCT NAME:
- VALVE
- SIZE METRIC:
- STANDARD
- TULIP ANGLE:
- 20°
- MODEL:
- WHITE DIAMOND™
- RIDING STYLE:
- OFF-ROAD
- STEM DIAMETER IMPERIAL:
- 0.1765'
- UNITS:
- EACH
- LENGTH IMPERIAL:
- 3.360'
MSRP: $54.10Now: $48.69Was: $54.10Qty in Cart: 0Quantity:Price:MSRP: $54.10Now: $48.69Was: $54.10Subtotal: -
On Sale
KIBBLEWHITE Exhaust Valve 40-4373H
KIBBLEWHITE
MSRP: $54.10Now: $48.69Was: $54.10A precision exhaust valve is fundamental to engine reliability and performance—especially under high RPM and elevated combustion temperatures. The KIBBLEWHITE White Diamond™ valve delivers the...KW404373H- SKU:
- KW404373H
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- HEAD DIAMETER METRIC:
- 25.00 MM
- MATERIAL:
- STEEL
- PRODUCT NAME:
- VALVE
- RIDING STYLE:
- OFF-ROAD
- SIZE METRIC:
- STANDARD
- TULIP ANGLE:
- 20°
- APPLICATION:
- EXHAUST
- MODEL:
- WHITE DIAMOND™
- UNITS:
- EACH
- LENGTH IMPERIAL:
- 3.375'
- STEM DIAMETER IMPERIAL:
- 0.1760'
MSRP: $54.10Now: $48.69Was: $54.10 -
On Sale
KIBBLEWHITE Exhaust Valve 80-80014
KIBBLEWHITE
MSRP: $54.10Now: $48.69Was: $54.10Exhaust valves experience extreme thermal and mechanical stress, and factory units often succumb to wear, carbon buildup, and corrosion—compromising engine efficiency and reliability. The KIBBLEWHITE...KW8080014- SKU:
- KW8080014
- Availability:
- Ships Same Business Day
- Weight:
- 0.13 LBS
- STEM DIAMETER IMPERIAL:
- 0.2745'
- APPLICATION:
- EXHAUST
- MATERIAL:
- STAINLESS STEEL
- MODEL:
- BLACK DIAMOND™
- PRODUCT NAME:
- VALVE
- TULIP ANGLE:
- 29°
- HEAD DIAMETER METRIC:
- 34.00 MM
- LENGTH IMPERIAL:
- 2.945'
- RIDING STYLE:
- ATV
- UNITS:
- EACH
MSRP: $54.10Now: $48.69Was: $54.10 -
On Sale
KIBBLEWHITE Valve Spring Kit 80-80030
KIBBLEWHITE
MSRP: $178.31Now: $160.48Was: $178.31Valve spring performance directly impacts your engine's ability to maintain valve control at high RPM, preventing float and ensuring reliable power delivery across your entire rev range. The...KW8080030- SKU:
- KW8080030
- Availability:
- Ships Same Business Day
- Weight:
- 0.45 LBS
- SPRING LIFT:
- 0,345'
- SPRING LIFT IMPERIAL:
- 0.345'
- SPRING OPEN PRESSURE:
- 145 LB
- TYPE:
- VALVE
- APPLICATION:
- EXHAUST
- RIDING STYLE:
- UTV
- APPLICATION:
- INTAKE
- MATERIAL:
- TITANIUM
- PRODUCT NAME:
- SPRING KIT
- MATERIAL:
- STEEL
- RIDING STYLE:
- ATV
- RIDING STYLE:
- OFF-ROAD
- SPRING SEAT PRESSURE:
- 55 LB
- UNITS:
- KIT
MSRP: $178.31Now: $160.48Was: $178.31Qty in Cart: 0Quantity:Price:MSRP: $178.31Now: $160.48Was: $178.31Subtotal: -
On Sale
KIBBLEWHITE Intake Valve Guide 80-80040
KIBBLEWHITE
MSRP: $19.83Now: $17.85Was: $19.83Valve guides are critical to engine longevity and performance—they control oil consumption, maintain proper valve sealing, and prevent catastrophic wear under high RPM and sustained heat cycles. The...KW8080040- SKU:
- KW8080040
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- MATERIAL:
- AMPCO-45
- APPLICATION:
- INTAKE
- RIDING STYLE:
- ATV
- SIZE IMPERIAL:
- STANDARD
- UNITS:
- EACH
- OUTSIDE DIAMETER IMPERIAL:
- 0.4550'
- RIDING STYLE:
- UTV
- INSIDE DIAMETER IMPERIAL:
- 0.2345'
- PRODUCT NAME:
- VALVE GUIDE
MSRP: $19.83Now: $17.85Was: $19.83 -
On Sale
KIBBLEWHITE Exhaust Valve Guide 80-80050
KIBBLEWHITE
MSRP: $19.83Now: $17.85Was: $19.83Valve guide wear is one of the most common causes of compression loss and oil burning in high-performance engines. The KIBBLEWHITE 80-80050 exhaust valve guide uses Ampco-45 bronze—a specialized...KW8080050- SKU:
- KW8080050
- Availability:
- Ships Same Business Day
- Weight:
- 0.06 LBS
- APPLICATION:
- EXHAUST
- MATERIAL:
- AMPCO-45
- RIDING STYLE:
- ATV
- SIZE IMPERIAL:
- STANDARD
- UNITS:
- EACH
- INSIDE DIAMETER IMPERIAL:
- 0.2348'
- OUTSIDE DIAMETER IMPERIAL:
- 0.4550'
- RIDING STYLE:
- UTV
- PRODUCT NAME:
- VALVE GUIDE
MSRP: $19.83Now: $17.85Was: $19.83 -
On Sale
KIBBLEWHITE Intake Valve 30-31462
KIBBLEWHITE
MSRP: $37.55Now: $33.80Was: $37.55Intake valve performance directly impacts combustion efficiency, cylinder fill rate, and overall engine responsiveness—making quality valve selection critical for both street and race applications...09261136- SKU:
- 09261136
- Availability:
- Ships Same Business Day
- Weight:
- 0.07 LBS
- HEAD DIAMETER METRIC:
- 30.50 MM
- LENGTH IMPERIAL:
- 3.500'
- MATERIAL:
- STAINLESS STEEL
- MODEL:
- BLACK DIAMOND™
- PRODUCT NAME:
- VALVE
- STEM DIAMETER IMPERIAL:
- 0.1960'
- UNITS:
- EACH
- TULIP ANGLE:
- 20°
- APPLICATION:
- INTAKE
- RIDING STYLE:
- OFF-ROAD
MSRP: $37.55Now: $33.80Was: $37.55 -
On Sale
KIBBLEWHITE Exhaust Valve 30-31466
KIBBLEWHITE
MSRP: $37.55Now: $33.80Was: $37.55Exhaust valves endure extreme temperatures and combustion pressures cycle after cycle—material quality directly impacts engine reliability and performance longevity. The Kibblewhite Black Diamond™...09261138- SKU:
- 09261138
- Availability:
- Ships Same Business Day
- Weight:
- 0.06 LBS
- HEAD DIAMETER METRIC:
- 25.00 MM
- TULIP ANGLE:
- 20°
- APPLICATION:
- EXHAUST
- MATERIAL:
- STAINLESS STEEL
- PRODUCT NAME:
- VALVE
- LENGTH IMPERIAL:
- 3.310'
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
- MODEL:
- BLACK DIAMOND™
- STEM DIAMETER IMPERIAL:
- 0.1760'
MSRP: $37.55Now: $33.80Was: $37.55 -
On Sale
KIBBLEWHITE Center Intake Valve 80-8056H
KIBBLEWHITE
MSRP: $54.10Now: $48.69Was: $54.10If you're running a high-performance engine, valve quality directly impacts reliability and power delivery under extreme conditions. KIBBLEWHITE's White Diamond™ center intake valves are...KW808056H- SKU:
- KW808056H
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- APPLICATION:
- CENTER INTAKE
- LENGTH IMPERIAL:
- 3.280'
- TULIP ANGLE:
- 15°
- UNITS:
- EACH
- MATERIAL:
- STEEL
- MODEL:
- WHITE DIAMOND™
- RIDING STYLE:
- OFF-ROAD
- SIZE METRIC:
- STANDARD
- STEM DIAMETER IMPERIAL:
- 0.1765'
- HEAD DIAMETER METRIC:
- 27.00 MM
- PRODUCT NAME:
- VALVE
MSRP: $54.10Now: $48.69Was: $54.10 -
On Sale
KIBBLEWHITE Exhaust Valve 80-8057H
KIBBLEWHITE
MSRP: $54.10Now: $48.69Was: $54.10High-revving engines demand valves engineered to withstand extreme temperatures and repeated shock loads without compromise. The KIBBLEWHITE White Diamond™ exhaust valve delivers the precision and...KW808057H- SKU:
- KW808057H
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- APPLICATION:
- EXHAUST
- HEAD DIAMETER METRIC:
- 28.00 MM
- PRODUCT NAME:
- VALVE
- STEM DIAMETER IMPERIAL:
- 0.1955'
- UNITS:
- EACH
- MATERIAL:
- STEEL
- MODEL:
- WHITE DIAMOND™
- RIDING STYLE:
- OFF-ROAD
- SIZE METRIC:
- STANDARD
- TULIP ANGLE:
- 25°
- LENGTH IMPERIAL:
- 3.220'
MSRP: $54.10Now: $48.69Was: $54.10 -
On Sale
KIBBLEWHITE Exhaust Valve 30-30075
KIBBLEWHITE
MSRP: $54.10Now: $48.69Was: $54.10Valve durability directly impacts engine reliability and performance consistency—especially under high-RPM conditions where thermal stress and friction accelerate wear. The KIBBLEWHITE Black Diamond™...KW3030075- SKU:
- KW3030075
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
- HEAD DIAMETER METRIC:
- 23.50 MM
- UNITS:
- EACH
- APPLICATION:
- EXHAUST
- PRODUCT NAME:
- VALVE
- LENGTH IMPERIAL:
- 3.765'
- MODEL:
- BLACK DIAMOND™
- STEM DIAMETER IMPERIAL:
- 0.1955'
- TULIP ANGLE:
- 29°
MSRP: $54.10Now: $48.69Was: $54.10Qty in Cart: 0Quantity:Price:MSRP: $54.10Now: $48.69Was: $54.10Subtotal: -
On Sale
KIBBLEWHITE Intake Valve 30-30081
KIBBLEWHITE
MSRP: $54.10Now: $48.69Was: $54.10High-revving engines demand intake valves that can handle extreme temperatures and constant stress without sacrificing flow. The KIBBLEWHITE Black Diamond™ Intake Valve delivers the durability and...KW3030081- SKU:
- KW3030081
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- APPLICATION:
- INTAKE
- MATERIAL:
- STEEL
- PRODUCT NAME:
- VALVE
- STEM DIAMETER IMPERIAL:
- 0.2160'
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
- HEAD DIAMETER METRIC:
- 28.50 MM
- LENGTH IMPERIAL:
- 3.805'
- MODEL:
- BLACK DIAMOND™
- TULIP ANGLE:
- 23°
MSRP: $54.10Now: $48.69Was: $54.10 -
On Sale
KIBBLEWHITE Intake Valve - TRX450R - Standard 30-30950
KIBBLEWHITE
MSRP: $31.01Now: $27.91Was: $31.01Your TRX450R's intake valve is exposed to extreme combustion temperatures and constant mechanical stress—factory valves wear quickly under high-performance demands. The KIBBLEWHITE Black Diamond™...09260416- SKU:
- 09260416
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- STEM DIAMETER IMPERIAL:
- 0.2158'
- HEAD DIAMETER METRIC:
- 36.00 MM
- MODEL:
- BLACK DIAMOND™
- APPLICATION:
- INTAKE
- LENGTH IMPERIAL:
- 3.315'
- MATERIAL:
- STAINLESS STEEL
- PRODUCT NAME:
- VALVE
- RIDING STYLE:
- ATV
- TULIP ANGLE:
- 20°
- UNITS:
- EACH
MSRP: $31.01Now: $27.91Was: $31.01 -
On Sale
KIBBLEWHITE Spring Kit 30-30085
KIBBLEWHITE
MSRP: $108.01Now: $97.21Was: $108.01A high-quality valve spring kit is fundamental to any engine build or rebuild—it directly impacts valve timing accuracy, durability under high RPM, and overall engine reliability. The KIBBLEWHITE...KW3030085- SKU:
- KW3030085
- Availability:
- Ships Same Business Day
- Weight:
- 0.44 LBS
- RIDING STYLE:
- OFF-ROAD
- SPRING LIFT IMPERIAL:
- 0.430'
- UNITS:
- KIT
- APPLICATION:
- INTAKE
- MATERIAL:
- TITANIUM
- PRODUCT NAME:
- SPRING KIT
- SPRING OPEN PRESSURE:
- 201 LB
- APPLICATION:
- EXHAUST
- TYPE:
- VALVE
MSRP: $108.01Now: $97.21Was: $108.01Qty in Cart: 0Quantity:Price:MSRP: $108.01Now: $97.21Was: $108.01Subtotal: -
On Sale
KIBBLEWHITE Exhaust Valve - TRX450R - Standard 30-30953
KIBBLEWHITE
MSRP: $31.01Now: $27.91Was: $31.01Stock exhaust valves are a common wear point that can compromise engine efficiency and reliability, especially in high-RPM applications like the TRX450R. The KIBBLEWHITE Black Diamond™ Exhaust Valve...09260418- SKU:
- 09260418
- Availability:
- Ships Same Business Day
- Weight:
- 0.06 LBS
- STEM DIAMETER IMPERIAL:
- 0.1957'
- APPLICATION:
- EXHAUST
- MATERIAL:
- STAINLESS STEEL
- MODEL:
- BLACK DIAMOND™
- PRODUCT NAME:
- VALVE
- TULIP ANGLE:
- 20°
- HEAD DIAMETER METRIC:
- 30.00 MM
- UNITS:
- EACH
- LENGTH IMPERIAL:
- 3.310'
- RIDING STYLE:
- ATV
MSRP: $31.01Now: $27.91Was: $31.01 -
On Sale
KIBBLEWHITE Exhaust Valve 30-30090
KIBBLEWHITE
MSRP: $54.10Now: $48.69Was: $54.10Exhaust valves are critical to engine reliability and performance—a worn or marginal valve compromises combustion efficiency, increases heat stress, and accelerates internal wear. The KIBBLEWHITE...KW3030090- SKU:
- KW3030090
- Availability:
- Ships Same Business Day
- Weight:
- 0.06 LBS
- UNITS:
- EACH
- APPLICATION:
- EXHAUST
- HEAD DIAMETER METRIC:
- 22.50 MM
- LENGTH IMPERIAL:
- 3.650'
- PRODUCT NAME:
- VALVE
- MODEL:
- BLACK DIAMOND™
- STEM DIAMETER IMPERIAL:
- 0.2150'
- TULIP ANGLE:
- 29°
- MATERIAL:
- STEEL
- RIDING STYLE:
- ATV
MSRP: $54.10Now: $48.69Was: $54.10 -
On Sale
KIBBLEWHITE Spring Kit 30-31050
KIBBLEWHITE
MSRP: $207.81Now: $187.03Was: $207.81Valve spring performance directly impacts your engine's RPM ceiling, valve timing accuracy, and overall reliability under high-load conditions. The KIBBLEWHITE Spring Kit 30-31050 delivers...09260420- SKU:
- 09260420
- Availability:
- Ships Same Business Day
- Weight:
- 0.61 LBS
- MATERIAL:
- TITANIUM
- SPRING LIFT IMPERIAL:
- 0.440'
- UNITS:
- KIT
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- VALVE
- APPLICATION:
- INTAKE
- SPRING OPEN PRESSURE:
- INTAKE 147 LB, EXHAUST 203 LB
- APPLICATION:
- EXHAUST
- PRODUCT NAME:
- SPRING KIT
MSRP: $207.81Now: $187.03Was: $207.81 -
On Sale
KIBBLEWHITE Intake Valve - CRF450X - 2005-2007 - Standard 30-31062
KIBBLEWHITE
MSRP: $31.01Now: $27.91Was: $31.01Your CRF450X's intake valve is under constant thermal and mechanical stress—factory valves wear faster than you'd expect, especially if you're pushing RPMs or running extended seasons. Kibblewhite's...09260421- SKU:
- 09260421
- Availability:
- Ships Same Business Day
- Weight:
- 0.11 LBS
- RIDING STYLE:
- OFF-ROAD
- APPLICATION:
- INTAKE
- HEAD DIAMETER METRIC:
- 35.00 MM
- LENGTH IMPERIAL:
- 3.315'
- STEM DIAMETER IMPERIAL:
- 0.2158'
- UNITS:
- EACH
- MATERIAL:
- STAINLESS STEEL
- PRODUCT NAME:
- VALVE
- TULIP ANGLE:
- 20°
- MODEL:
- BLACK DIAMOND™
MSRP: $31.01Now: $27.91Was: $31.01 -
On Sale
KIBBLEWHITE Intake Valve - CRF250R - 2008 - Standard 30-31162
KIBBLEWHITE
MSRP: $37.55Now: $33.80Was: $37.55If you're running a CRF250R, intake valve longevity directly impacts engine reliability and peak performance. KIBBLEWHITE's Black Diamond™ valves eliminate the weak link in your cylinder head—factory...09260430- SKU:
- 09260430
- Availability:
- Ships Same Business Day
- Weight:
- 0.06 LBS
- APPLICATION:
- INTAKE
- LENGTH IMPERIAL:
- 3.280'
- UNITS:
- EACH
- HEAD DIAMETER METRIC:
- 31.00 MM
- MATERIAL:
- STAINLESS STEEL
- PRODUCT NAME:
- VALVE
- RIDING STYLE:
- OFF-ROAD
- TULIP ANGLE:
- 20°
- MODEL:
- BLACK DIAMOND™
- STEM DIAMETER IMPERIAL:
- 0.1957'
MSRP: $37.55Now: $33.80Was: $37.55 -
On Sale
KIBBLEWHITE Exhaust Valve - CRF250R - 2008 - Standard 30-31166
KIBBLEWHITE
MSRP: $37.55Now: $33.80Was: $37.55Stock exhaust valves wear under sustained high-RPM operation, leading to compression loss and reduced engine efficiency. The Kibblewhite Black Diamond™ valve is engineered to withstand the thermal...09260434- SKU:
- 09260434
- Availability:
- Ships Same Business Day
- Weight:
- 0.06 LBS
- STEM DIAMETER IMPERIAL:
- 0.1760'
- APPLICATION:
- EXHAUST
- MATERIAL:
- STAINLESS STEEL
- MODEL:
- BLACK DIAMOND™
- PRODUCT NAME:
- VALVE
- TULIP ANGLE:
- 20°
- LENGTH IMPERIAL:
- 3.235'
- HEAD DIAMETER METRIC:
- 26.00 MM
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
MSRP: $37.55Now: $33.80Was: $37.55
