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 Spring Kit 40-40100
KIBBLEWHITE
MSRP: $235.67Now: $198.23Was: $235.67A valve spring kit is fundamental to any serious engine build—weak or worn springs compromise valve timing, reduce horsepower, and accelerate component wear. The KIBBLEWHITE Spring Kit 40-40100...09260167- SKU:
- 09260167
- Availability:
- Ships Same Business Day
- Weight:
- 0.34 LBS
- APPLICATION:
- INTAKE
- RIDING STYLE:
- OFF-ROAD
- SPRING OPEN PRESSURE:
- 155 LB
- TYPE:
- VALVE
- MATERIAL:
- TITANIUM
- PRODUCT NAME:
- SPRING KIT
- UNITS:
- KIT
- APPLICATION:
- EXHAUST
- SPRING LIFT IMPERIAL:
- 0.445'
MSRP: $235.67Now: $198.23Was: $235.67 -
On Sale
KIBBLEWHITE Intake Valve - KX/RMZ - Standard 40-40140H
KIBBLEWHITE
MSRP: $37.55Now: $33.80Was: $37.55Intake valve performance directly impacts combustion efficiency and engine responsiveness—particularly critical on KX/RMZ platforms where precision tolerances demand uncompromising quality...09260170- SKU:
- 09260170
- Availability:
- Ships Same Business Day
- Weight:
- 0.07 LBS
- MODEL:
- BLACK DIAMOND™
- STEM DIAMETER IMPERIAL:
- 0.1765'
- APPLICATION:
- INTAKE
- LENGTH IMPERIAL:
- 3.120'
- UNITS:
- EACH
- HEAD DIAMETER METRIC:
- 31.00 MM
- MATERIAL:
- STAINLESS STEEL
- PRODUCT NAME:
- VALVE
- TULIP ANGLE:
- 20°
- RIDING STYLE:
- OFF-ROAD
MSRP: $37.55Now: $33.80Was: $37.55 -
On Sale
KIBBLEWHITE Exhaust Valve - KX/RMZ - Standard 40-40143H
KIBBLEWHITE
MSRP: $37.55Now: $33.80Was: $37.55Exhaust valves are engineered for extreme abuse—constant thermal cycling, combustion pressures, and high RPMs demand materials that won't degrade. The Kibblewhite Black Diamond™ valve gives you...09260172- SKU:
- 09260172
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- TULIP ANGLE:
- 25°
- STEM DIAMETER IMPERIAL:
- 0.1756'
- APPLICATION:
- EXHAUST
- LENGTH IMPERIAL:
- 3.125'
- MODEL:
- BLACK DIAMOND™
- HEAD DIAMETER METRIC:
- 25.00 MM
- MATERIAL:
- STAINLESS STEEL
- PRODUCT NAME:
- VALVE
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
MSRP: $37.55Now: $33.80Was: $37.55 -
On Sale
KIBBLEWHITE Intake Valve 80-80214H
KIBBLEWHITE
MSRP: $37.55Now: $33.80Was: $37.55Intake valve performance directly impacts your engine's breathing efficiency, combustion timing, and overall power output. KIBBLEWHITE's White Diamond™ valves eliminate the weak link in your cylinder...09260107- SKU:
- 09260107
- Availability:
- Ships Same Business Day
- Weight:
- 0.06 LBS
- HEAD DIAMETER METRIC:
- 28.00 MM
- MATERIAL:
- STAINLESS STEEL
- PRODUCT NAME:
- VALVE
- APPLICATION:
- INTAKE
- RIDING STYLE:
- ATV
- TULIP ANGLE:
- 15°
- UNITS:
- EACH
- MODEL:
- WHITE DIAMOND™
- RIDING STYLE:
- OFF-ROAD
- STEM DIAMETER IMPERIAL:
- 0.1765'
- LENGTH IMPERIAL:
- 3.030'
- SIZE METRIC:
- OVERSIZE
MSRP: $37.55Now: $33.80Was: $37.55 -
On Sale
KIBBLEWHITE Intake Valve 80-80215H
KIBBLEWHITE
MSRP: $37.55Now: $33.80Was: $37.55When you're pushing peak RPMs on track, valve integrity becomes non-negotiable. KIBBLEWHITE's White Diamond™ intake valves are precision-forged from premium EV8 stainless steel or Inconel-751, then...09260108- SKU:
- 09260108
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- STEM DIAMETER IMPERIAL:
- 0.1765'
- HEAD DIAMETER METRIC:
- 27.00 MM
- MATERIAL:
- STAINLESS STEEL
- PRODUCT NAME:
- VALVE
- RIDING STYLE:
- OFF-ROAD
- SIZE METRIC:
- STANDARD
- APPLICATION:
- CENTER INTAKE
- LENGTH IMPERIAL:
- 3.000'
- RIDING STYLE:
- ATV
- UNITS:
- EACH
- MODEL:
- WHITE DIAMOND™
- TULIP ANGLE:
- 15°
MSRP: $37.55Now: $33.80Was: $37.55 -
On Sale
KIBBLEWHITE Intake Valve 80-80216H
KIBBLEWHITE
MSRP: $37.55Now: $33.80Was: $37.55If you're serious about top-end reliability and consistent performance, valve quality directly impacts your engine's ability to sustain high RPMs and maintain precise combustion timing. KIBBLEWHITE's...09260109- SKU:
- 09260109
- Availability:
- Ships Same Business Day
- Weight:
- 0.11 LBS
- STEM DIAMETER IMPERIAL:
- 0.1765'
- APPLICATION:
- CENTER INTAKE
- LENGTH IMPERIAL:
- 2.990'
- RIDING STYLE:
- ATV
- UNITS:
- EACH
- HEAD DIAMETER METRIC:
- 28.00 MM
- MATERIAL:
- STAINLESS STEEL
- PRODUCT NAME:
- VALVE
- MODEL:
- WHITE DIAMOND™
- RIDING STYLE:
- OFF-ROAD
- SIZE METRIC:
- OVERSIZE
- TULIP ANGLE:
- 15°
MSRP: $37.55Now: $33.80Was: $37.55 -
On Sale
KIBBLEWHITE Exhaust Valve 80-80218H
KIBBLEWHITE
MSRP: $37.55Now: $33.80Was: $37.55High-revving engines demand valve integrity that won't compromise under extreme heat and pressure. KIBBLEWHITE's White Diamond™ exhaust valves deliver the durability and precision tolerances that...09260111- SKU:
- 09260111
- Availability:
- Ships Same Business Day
- Weight:
- 0.11 LBS
- LENGTH IMPERIAL:
- 2.945'
- MODEL:
- WHITE DIAMOND™
- RIDING STYLE:
- ATV
- RIDING STYLE:
- OFF-ROAD
- STEM DIAMETER IMPERIAL:
- 0.1956'
- UNITS:
- EACH
- HEAD DIAMETER METRIC:
- 29.00 MM
- APPLICATION:
- EXHAUST
- MATERIAL:
- STAINLESS STEEL
- PRODUCT NAME:
- VALVE
- SIZE METRIC:
- OVERSIZE
- TULIP ANGLE:
- 20°
MSRP: $37.55Now: $33.80Was: $37.55 -
On Sale
KIBBLEWHITE Spring Kit 80-80066
KIBBLEWHITE
MSRP: $317.71Now: $285.94Was: $317.71A quality valve spring kit is fundamental to reliable engine performance, especially if you're pushing higher RPMs or running forced induction. The KIBBLEWHITE Spring Kit 80-80066 delivers the...09260112- SKU:
- 09260112
- Availability:
- Ships Same Business Day
- Weight:
- 0.31 LBS
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- APPLICATION:
- EXHAUST
- TYPE:
- VALVE
- APPLICATION:
- INTAKE
- MATERIAL:
- TITANIUM
- PRODUCT NAME:
- SPRING KIT
- SPRING LIFT IMPERIAL:
- 0.380'
- SPRING OPEN PRESSURE:
- 86 LB
MSRP: $317.71Now: $285.94Was: $317.71 -
On Sale
KIBBLEWHITE Intake Valve Guide 80-80080
KIBBLEWHITE
MSRP: $15.92Now: $14.33Was: $15.92Valve guide wear is one of the primary culprits behind oil consumption, rough idle, and lost compression in high-performance engines. The KIBBLEWHITE Intake Valve Guide 80-80080 replaces worn guides...09260113- SKU:
- 09260113
- Availability:
- Ships Same Business Day
- Weight:
- 0.06 LBS
- RIDING STYLE:
- OFF-ROAD
- APPLICATION:
- INTAKE
- PRODUCT NAME:
- VALVE GUIDE
- UNITS:
- EACH
- MATERIAL:
- C630 BRONZE
- INSIDE DIAMETER IMPERIAL:
- 0.1570'
- OUTSIDE DIAMETER IMPERIAL:
- 0.3563'
- SIZE IMPERIAL:
- STANDARD
MSRP: $15.92Now: $14.33Was: $15.92 -
On Sale
KIBBLEWHITE Exhaust Valve Guide 80-80090
KIBBLEWHITE
MSRP: $15.92Now: $14.33Was: $15.92Valve guides are critical to engine longevity—they control oil consumption, maintain precise valve timing, and prevent catastrophic engine wear. The KIBBLEWHITE 80-80090 exhaust valve guide delivers...09260118- SKU:
- 09260118
- Availability:
- Ships Same Business Day
- Weight:
- 0.06 LBS
- PRODUCT NAME:
- VALVE GUIDE
- MATERIAL:
- C630 BRONZE
- RIDING STYLE:
- OFF-ROAD
- INSIDE DIAMETER IMPERIAL:
- 0.1760'
- OUTSIDE DIAMETER IMPERIAL:
- 0.3958'
- SIZE IMPERIAL:
- STANDARD
- APPLICATION:
- EXHAUST
- UNITS:
- EACH
MSRP: $15.92Now: $14.33Was: $15.92 -
On Sale
KIBBLEWHITE Intake Valve - YZ250F - Standard 80-80073
KIBBLEWHITE
MSRP: $37.55Now: $33.80Was: $37.55The YZ250F demands intake valves that can handle sustained high RPM cycles without sacrificing precision or durability. KIBBLEWHITE's Black Diamond™ valves are purpose-built from premium EV8...09260123- SKU:
- 09260123
- Availability:
- Ships Same Business Day
- Weight:
- 0.06 LBS
- APPLICATION:
- INTAKE
- HEAD DIAMETER METRIC:
- 23.00 MM
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
- MATERIAL:
- STAINLESS STEEL
- MODEL:
- BLACK DIAMOND™
- PRODUCT NAME:
- VALVE
- STEM DIAMETER IMPERIAL:
- 0.1568'
- LENGTH IMPERIAL:
- 3.150'
- TULIP ANGLE:
- 25°
MSRP: $37.55Now: $33.80Was: $37.55 -
On Sale
KIBBLEWHITE Center Intake Valve - YZ250F - Standard 80-80075
KIBBLEWHITE
MSRP: $37.55Now: $33.80Was: $37.55Valve durability directly impacts engine reliability and performance consistency, especially under high-RPM conditions where stock valves often show premature wear. The KIBBLEWHITE Center Intake...09260124- SKU:
- 09260124
- Availability:
- Ships Same Business Day
- Weight:
- 0.06 LBS
- APPLICATION:
- CENTER INTAKE
- LENGTH IMPERIAL:
- 3.095'
- MODEL:
- BLACK DIAMOND™
- TULIP ANGLE:
- 25°
- MATERIAL:
- STAINLESS STEEL
- PRODUCT NAME:
- VALVE
- STEM DIAMETER IMPERIAL:
- 0.1568'
- UNITS:
- EACH
- HEAD DIAMETER METRIC:
- 23.00 MM
- RIDING STYLE:
- OFF-ROAD
MSRP: $37.55Now: $33.80Was: $37.55 -
On Sale
KIBBLEWHITE Exhaust Valve - YZ250F - Standard 80-80077
KIBBLEWHITE
MSRP: $37.55Now: $33.80Was: $37.55Valve degradation is one of the fastest ways to lose compression and power in your YZ250F. The KIBBLEWHITE Exhaust Valve delivers the precision engineering and material science needed to withstand...09260125- SKU:
- 09260125
- Availability:
- Ships Same Business Day
- Weight:
- 0.06 LBS
- HEAD DIAMETER METRIC:
- 24.50 MM
- TULIP ANGLE:
- 25°
- LENGTH IMPERIAL:
- 3.070'
- APPLICATION:
- EXHAUST
- MATERIAL:
- STAINLESS STEEL
- MODEL:
- BLACK DIAMOND™
- PRODUCT NAME:
- VALVE
- STEM DIAMETER IMPERIAL:
- 0.1758'
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
MSRP: $37.55Now: $33.80Was: $37.55 -
On Sale
KIBBLEWHITE Spring Kit 30-30590
KIBBLEWHITE
MSRP: $246.03Now: $206.94Was: $246.03A properly functioning valve train is critical to engine reliability and performance, and worn or damaged springs compromise both. The KIBBLEWHITE Spring Kit 30-30590 delivers the precision...09260210- SKU:
- 09260210
- Availability:
- Ships Same Business Day
- Weight:
- 0.38 LBS
- APPLICATION:
- INTAKE
- PRODUCT NAME:
- SPRING KIT
- TYPE:
- VALVE
- RIDING STYLE:
- OFF-ROAD
- SPRING LIFT IMPERIAL:
- 0.350'
- SPRING OPEN PRESSURE:
- 145 LB
- UNITS:
- KIT
- APPLICATION:
- EXHAUST
- MATERIAL:
- TITANIUM
MSRP: $246.03Now: $206.94Was: $246.03 -
On Sale
KIBBLEWHITE Intake Valve - CRF250R - Standard 30-30630
KIBBLEWHITE
MSRP: $37.55Now: $33.80Was: $37.55Factory intake valves are prone to wear and carbon buildup, which directly impacts combustion efficiency and throttle response on your CRF250R. The Kibblewhite Black Diamond™ intake valve restores...09260211- SKU:
- 09260211
- Availability:
- Ships Same Business Day
- Weight:
- 0.08 LBS
- APPLICATION:
- INTAKE
- MATERIAL:
- STAINLESS STEEL
- PRODUCT NAME:
- VALVE
- TULIP ANGLE:
- 20°
- UNITS:
- EACH
- MODEL:
- BLACK DIAMOND™
- HEAD DIAMETER METRIC:
- 31.00 MM
- RIDING STYLE:
- OFF-ROAD
- STEM DIAMETER IMPERIAL:
- 0.1961'
- LENGTH IMPERIAL:
- 3.280'
MSRP: $37.55Now: $33.80Was: $37.55 -
On Sale
KIBBLEWHITE Exhaust Valve - CRF250R - Standard 30-30633
KIBBLEWHITE
MSRP: $37.55Now: $33.80Was: $37.55Factory valve tolerances degrade quickly under high heat and combustion stress, robbing your CRF250R of reliability and peak performance. Kibblewhite's Black Diamond™ exhaust valves restore precision...09260213- SKU:
- 09260213
- Availability:
- Ships Same Business Day
- Weight:
- 0.19 LBS
- LENGTH IMPERIAL:
- 3.235'
- MATERIAL:
- STAINLESS STEEL
- PRODUCT NAME:
- VALVE
- RIDING STYLE:
- ATV
- TULIP ANGLE:
- 20°
- UNITS:
- EACH
- APPLICATION:
- EXHAUST
- MODEL:
- BLACK DIAMOND™
- HEAD DIAMETER METRIC:
- 26.00 MM
- RIDING STYLE:
- OFF-ROAD
- STEM DIAMETER IMPERIAL:
- 0.1956'
MSRP: $37.55Now: $33.80Was: $37.55 -
On Sale
KIBBLEWHITE Valve Spring Kit 60-60045
KIBBLEWHITE
MSRP: $159.05Now: $133.79Was: $159.05Valve springs are the unsung foundation of reliable engine performance—they control valve timing precision and prevent float at high RPMs, which directly impacts power delivery and engine longevity...09260215- SKU:
- 09260215
- Availability:
- Ships Same Business Day
- Weight:
- 0.56 LBS
- APPLICATION:
- INTAKE
- MATERIAL:
- TITANIUM
- PRODUCT NAME:
- SPRING KIT
- APPLICATION:
- EXHAUST
- SPRING OPEN PRESSURE:
- 171 LB
- SPRING SEAT PRESSURE:
- 57 LB
- MATERIAL:
- STEEL
- RIDING STYLE:
- ATV
- RIDING STYLE:
- OFF-ROAD
- SPRING LIFT:
- 0,440'
- SPRING LIFT IMPERIAL:
- 0.440'
- TYPE:
- VALVE
- UNITS:
- KIT
MSRP: $159.05Now: $133.79Was: $159.05 -
On Sale
KIBBLEWHITE Valve Spring Kit 30-30640
KIBBLEWHITE
MSRP: $222.36Now: $187.03Was: $222.36High-RPM valve train stability demands springs engineered to precise specifications—Kibblewhite's 30-30640 kit delivers consistent seat pressure and reliable valve control across your entire power...09260137- SKU:
- 09260137
- Availability:
- Ships Same Business Day
- Weight:
- 0.44 LBS
- MATERIAL:
- TITANIUM
- PRODUCT NAME:
- SPRING KIT
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- APPLICATION:
- EXHAUST
- SPRING LIFT IMPERIAL:
- 0.440'
- APPLICATION:
- INTAKE
- SPRING OPEN PRESSURE:
- INTAKE 147 LB, EXHAUST 203 LB
- TYPE:
- VALVE
MSRP: $222.36Now: $187.03Was: $222.36 -
On Sale
KIBBLEWHITE Valve Spring Kit 80-80100
KIBBLEWHITE
MSRP: $237.46Now: $199.73Was: $237.46Valve spring degradation is one of the most common causes of performance loss and catastrophic engine failure in high-revving applications. The KIBBLEWHITE Valve Spring Kit 80-80100 delivers the...09260249- SKU:
- 09260249
- Availability:
- Ships Same Business Day
- Weight:
- 0.11 LBS
- APPLICATION:
- EXHAUST
- PRODUCT NAME:
- SPRING KIT
- SPRING LIFT IMPERIAL:
- 0.375'
- SPRING OPEN PRESSURE:
- 85 LB
- APPLICATION:
- INTAKE
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- VALVE
- MATERIAL:
- TITANIUM
- UNITS:
- KIT
MSRP: $237.46Now: $199.73Was: $237.46 -
On Sale
KIBBLEWHITE Intake Valve 80-80872
KIBBLEWHITE
MSRP: $37.55Now: $33.80Was: $37.55Intake valve performance directly impacts combustion efficiency, throttle response, and overall engine reliability—especially under high-RPM conditions where inferior valves fail prematurely...09262918- SKU:
- 09262918
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- APPLICATION:
- INTAKE
- HEAD DIAMETER METRIC:
- 37.00 MM
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
- LENGTH IMPERIAL:
- 3.280'
- STEM DIAMETER IMPERIAL:
- 0.2158'
- MATERIAL:
- STAINLESS STEEL
- MODEL:
- BLACK DIAMOND™
- PRODUCT NAME:
- VALVE
- TULIP ANGLE:
- 20°
MSRP: $37.55Now: $33.80Was: $37.55
