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
-
On Sale
KIBBLEWHITE Intake/Exhaust Valve Guide 30-4069
KIBBLEWHITE
MSRP: $26.89Now: $24.20Was: $26.89Valve guide wear is one of the most common causes of oil consumption, poor ring sealing, and valve seat degradation in high-performance engines. The KIBBLEWHITE 30-4069 Intake/Exhaust Valve Guide...KW304069- SKU:
- KW304069
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
- INSIDE DIAMETER IMPERIAL:
- 0.2155'
- RIDING STYLE:
- OFF-ROAD
- APPLICATION:
- INTAKE
- MATERIAL:
- AMPCO-45
- PRODUCT NAME:
- VALVE GUIDE
- OUTSIDE DIAMETER IMPERIAL:
- 0.4372'
- APPLICATION:
- EXHAUST
- SIZE IMPERIAL:
- STANDARD
- UNITS:
- EACH
MSRP: $26.89Now: $24.20Was: $26.89 -
On Sale
KIBBLEWHITE Valve Seat 10-SB250
KIBBLEWHITE
MSRP: $30.30Now: $27.27Was: $30.30If you're running titanium valves in a high-performance engine, your valve seats need to match that precision. KIBBLEWHITE's copper-based seats deliver the thermal conductivity and wear resistance...09261619- SKU:
- 09261619
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- UNITS:
- EACH
- APPLICATION:
- INTAKE
- MATERIAL:
- TITANIUM
- PRODUCT NAME:
- VALVE SEAT
- VALVE SEAT HEIGHT METRIC:
- 9.00 MM
- INSIDE DIAMETER METRIC:
- 17.00 MM
- OUTSIDE DIAMETER METRIC:
- 25.00 MM
- RIDING STYLE:
- OFF-ROAD
MSRP: $30.30Now: $27.27Was: $30.30 -
On Sale
KIBBLEWHITE Valve Seat 10-SB280
KIBBLEWHITE
MSRP: $30.30Now: $27.27Was: $30.30If you're running titanium valves in a high-performance engine, valve seat material directly impacts your engine's thermal stability, durability, and longevity under sustained boost or high RPM...09261620- SKU:
- 09261620
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- PRODUCT NAME:
- VALVE SEAT
- APPLICATION:
- EXHAUST
- VALVE SEAT HEIGHT METRIC:
- 9.50 MM
- OUTSIDE DIAMETER METRIC:
- 28.00 MM
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
- INSIDE DIAMETER METRIC:
- 20.00 MM
- MATERIAL:
- TITANIUM
MSRP: $30.30Now: $27.27Was: $30.30 -
On Sale
KIBBLEWHITE Valve Seat 10-SB350
KIBBLEWHITE
MSRP: $34.71Now: $31.24Was: $34.71If you're running titanium valves in a high-performance application, valve seat material matters—a lot. KIBBLEWHITE's copper-based seats deliver superior thermal conductivity and wear resistance,...09261626- SKU:
- 09261626
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- MATERIAL:
- TITANIUM
- INSIDE DIAMETER METRIC:
- 26.00 MM
- RIDING STYLE:
- OFF-ROAD
- APPLICATION:
- EXHAUST
- OUTSIDE DIAMETER METRIC:
- 35.00 MM
- PRODUCT NAME:
- VALVE SEAT
- UNITS:
- EACH
- VALVE SEAT HEIGHT METRIC:
- 11.00 MM
MSRP: $34.71Now: $31.24Was: $34.71 -
On Sale
KIBBLEWHITE Valve Seat 10-SB385
KIBBLEWHITE
MSRP: $40.81Now: $36.73Was: $40.81If you're running titanium valves in a high-performance engine, your valve seats need to match that precision. The KIBBLEWHITE 10-SB385 is purpose-built to handle the thermal demands and wear...09261627- SKU:
- 09261627
- Availability:
- Ships Same Business Day
- Weight:
- 0.08 LBS
- INSIDE DIAMETER METRIC:
- 29.00 MM
- MATERIAL:
- TITANIUM
- VALVE SEAT HEIGHT METRIC:
- 11.00 MM
- OUTSIDE DIAMETER METRIC:
- 38.50 MM
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
- APPLICATION:
- INTAKE
- PRODUCT NAME:
- VALVE SEAT
MSRP: $40.81Now: $36.73Was: $40.81 -
On Sale
KIBBLEWHITE Valve Seat 10-SB390
KIBBLEWHITE
MSRP: $40.81Now: $36.73Was: $40.81If you're running titanium valves in a high-performance engine, your valve seats are the critical interface between extreme heat and precision engineering. KIBBLEWHITE's copper-based seat design...09261628- SKU:
- 09261628
- Availability:
- Ships Same Business Day
- Weight:
- 0.09 LBS
- INSIDE DIAMETER METRIC:
- 30.00 MM
- MATERIAL:
- TITANIUM
- OUTSIDE DIAMETER METRIC:
- 39.00 MM
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
- VALVE SEAT HEIGHT METRIC:
- 11.00 MM
- APPLICATION:
- INTAKE
- PRODUCT NAME:
- VALVE SEAT
MSRP: $40.81Now: $36.73Was: $40.81 -
On Sale
KIBBLEWHITE Cast Iron Valve Seat 10-SC290
KIBBLEWHITE
MSRP: $8.24Now: $7.42Was: $8.24If you're running high-RPM applications or alternative fuels—whether it's nitrous, forced induction, or methanol—your valve seats need to withstand extreme thermal stress and microwelding without...09261631- SKU:
- 09261631
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- INSIDE DIAMETER METRIC:
- 21.00 MM
- RIDING STYLE:
- ATV
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
- VALVE SEAT HEIGHT METRIC:
- 9.50 MM
- APPLICATION:
- INTAKE
- HEAD DIAMETER METRIC:
- 29.00 MM
- MATERIAL:
- STEEL
- OUTSIDE DIAMETER METRIC:
- 29.00 MM
- PRODUCT NAME:
- VALVE SEAT
MSRP: $8.24Now: $7.42Was: $8.24 -
On Sale
KIBBLEWHITE Cast Iron Valve Seat 10-SC310
KIBBLEWHITE
MSRP: $8.49Now: $7.64Was: $8.49Valve seat recession is one of the most insidious problems in high-performance engines—it silently erodes compression, destroys your power curve, and forces expensive rebuilds. The KIBBLEWHITE Cast...09261632- SKU:
- 09261632
- Availability:
- Ships Same Business Day
- Weight:
- 0.06 LBS
- INSIDE DIAMETER METRIC:
- 23.00 MM
- VALVE SEAT HEIGHT METRIC:
- 9.50 MM
- HEAD DIAMETER METRIC:
- 31.00 MM
- MATERIAL:
- STEEL
- OUTSIDE DIAMETER METRIC:
- 31.00 MM
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
- APPLICATION:
- EXHAUST
- PRODUCT NAME:
- VALVE SEAT
- RIDING STYLE:
- ATV
MSRP: $8.49Now: $7.64Was: $8.49 -
On Sale
KIBBLEWHITE Cast Iron Valve Seat 10-SC390
KIBBLEWHITE
MSRP: $9.57Now: $8.61Was: $9.57Valve seat recession and microwelding are silent killers in high-performance engines—they compromise combustion efficiency, increase blow-by, and shorten engine life. The KIBBLEWHITE Cast Iron Valve...09261638- SKU:
- 09261638
- Availability:
- Ships Same Business Day
- Weight:
- 0.08 LBS
- PRODUCT NAME:
- VALVE SEAT
- UNITS:
- EACH
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
- APPLICATION:
- INTAKE
- INSIDE DIAMETER METRIC:
- 30.00 MM
- OUTSIDE DIAMETER METRIC:
- 39.00 MM
- HEAD DIAMETER METRIC:
- 39.00 MM
- VALVE SEAT HEIGHT METRIC:
- 10.00 MM
MSRP: $9.57Now: $8.61Was: $9.57 -
On Sale
KIBBLEWHITE Spring Kit - .440" 30-31250
KIBBLEWHITE
MSRP: $207.83Now: $187.05Was: $207.83Valve spring performance directly impacts your engine's ability to maintain precise valve timing under high RPM conditions. The KIBBLEWHITE Spring Kit delivers consistent lift and closure across the...09261640- SKU:
- 09261640
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- APPLICATION:
- INTAKE
- PRODUCT NAME:
- SPRING KIT
- SPRING LIFT IMPERIAL:
- 0.440'
- SPRING OPEN PRESSURE:
- INTAKE 147 LB, EXHAUST 203 LB
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- APPLICATION:
- EXHAUST
- TYPE:
- VALVE
- MATERIAL:
- TITANIUM
MSRP: $207.83Now: $187.05Was: $207.83Qty in Cart: 0Quantity:Price:MSRP: $207.83Now: $187.05Was: $207.83Subtotal: -
On Sale
KIBBLEWHITE Exhaust Valve 30-31266
KIBBLEWHITE
MSRP: $31.01Now: $27.91Was: $31.01Exhaust valves are critical to engine reliability and performance—they endure extreme heat cycling and high-velocity gas flow that demands superior material integrity. KIBBLEWHITE's Black Diamond™...09261643- SKU:
- 09261643
- Availability:
- Ships Same Business Day
- Weight:
- 0.11 LBS
- APPLICATION:
- EXHAUST
- HEAD DIAMETER METRIC:
- 30.00 MM
- LENGTH IMPERIAL:
- 3.175'
- TULIP ANGLE:
- 20°
- MATERIAL:
- STAINLESS STEEL
- PRODUCT NAME:
- VALVE
- STEM DIAMETER IMPERIAL:
- 0.1955'
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
- MODEL:
- BLACK DIAMOND™
MSRP: $31.01Now: $27.91Was: $31.01 -
On Sale
KIBBLEWHITE Exhaust Valve 40-40416
KIBBLEWHITE
MSRP: $35.22Now: $27.91Was: $35.22Exhaust valves endure extreme thermal cycling and chemical exposure—factory components often succumb to carbon buildup, corrosion, and premature wear. The Kibblewhite Black Diamond™ Exhaust Valve...09261651- SKU:
- 09261651
- Availability:
- Ships Same Business Day
- Weight:
- 0.06 LBS
- RIDING STYLE:
- UTV
- MATERIAL:
- STAINLESS STEEL
- MODEL:
- BLACK DIAMOND™
- PRODUCT NAME:
- VALVE
- STEM DIAMETER IMPERIAL:
- 0.1955'
- HEAD DIAMETER METRIC:
- 26.00 MM
- LENGTH IMPERIAL:
- 3.655'
- APPLICATION:
- EXHAUST
- RIDING STYLE:
- ATV
- TULIP ANGLE:
- 10°
- UNITS:
- EACH
MSRP: $35.22Now: $27.91Was: $35.22 -
On Sale
KIBBLEWHITE Valve Guide 40-40420
KIBBLEWHITE
MSRP: $19.83Now: $17.85Was: $19.83Valve guide wear is one of the most overlooked causes of oil consumption and compression loss in high-performance engines. The KIBBLEWHITE Valve Guide 40-40420 uses premium Ampco-45 composition to...09261653- SKU:
- 09261653
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- INSIDE DIAMETER IMPERIAL:
- 0.1955'
- RIDING STYLE:
- UTV
- APPLICATION:
- INTAKE
- OUTSIDE DIAMETER IMPERIAL:
- 0.4160'
- PRODUCT NAME:
- VALVE GUIDE
- MATERIAL:
- C630 BRONZE
- APPLICATION:
- EXHAUST
- RIDING STYLE:
- ATV
- SIZE IMPERIAL:
- STANDARD
- UNITS:
- EACH
MSRP: $19.83Now: $17.85Was: $19.83 -
On Sale
KIBBLEWHITE Exhaust Valve 60-60210H
KIBBLEWHITE
MSRP: $37.55Now: $33.80Was: $37.55Exhaust valves experience extreme thermal and mechanical stress, and OEM units often succumb to wear, carbon buildup, and corrosion—compromising engine efficiency and reliability. The KIBBLEWHITE...09261656- SKU:
- 09261656
- Availability:
- Ships Same Business Day
- Weight:
- 0.11 LBS
- APPLICATION:
- INTAKE
- RIDING STYLE:
- OFF-ROAD
- TULIP ANGLE:
- 20°
- MATERIAL:
- STAINLESS STEEL
- PRODUCT NAME:
- VALVE
- LENGTH IMPERIAL:
- 3.120'
- UNITS:
- EACH
- HEAD DIAMETER METRIC:
- 31.00 MM
- MODEL:
- BLACK DIAMOND™
- STEM DIAMETER IMPERIAL:
- 0.1765'
MSRP: $37.55Now: $33.80Was: $37.55 -
On Sale
KIBBLEWHITE Exhaust Valve 60-60213H
KIBBLEWHITE
MSRP: $37.55Now: $33.80Was: $37.55If you're building a high-revving engine that demands reliability under extreme conditions, valve quality directly impacts combustion efficiency, longevity, and peak horsepower. KIBBLEWHITE's Black...09261658- SKU:
- 09261658
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- HEAD DIAMETER METRIC:
- 25.00 MM
- STEM DIAMETER IMPERIAL:
- 0.1756'
- APPLICATION:
- EXHAUST
- MATERIAL:
- STAINLESS STEEL
- PRODUCT NAME:
- VALVE
- TULIP ANGLE:
- 25°
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
- LENGTH IMPERIAL:
- 3.115'
- MODEL:
- BLACK DIAMOND™
MSRP: $37.55Now: $33.80Was: $37.55 -
On Sale
KIBBLEWHITE Spring Kit - .445" 60-60500
KIBBLEWHITE
MSRP: $220.26Now: $198.23Was: $220.26Valve spring integrity directly impacts engine reliability and performance across the entire RPM band. This KIBBLEWHITE Spring Kit delivers precisely engineered spring rates and damping...09261660- SKU:
- 09261660
- Availability:
- Ships Same Business Day
- Weight:
- 0.45 LBS
- SPRING LIFT IMPERIAL:
- 0.445'
- APPLICATION:
- EXHAUST
- TYPE:
- VALVE
- MATERIAL:
- TITANIUM
- PRODUCT NAME:
- SPRING KIT
- APPLICATION:
- INTAKE
- RIDING STYLE:
- OFF-ROAD
- SPRING OPEN PRESSURE:
- 160 LB
- UNITS:
- KIT
MSRP: $220.26Now: $198.23Was: $220.26 -
On Sale
KIBBLEWHITE Valve Guide 60-60520
KIBBLEWHITE
MSRP: $17.83Now: $16.05Was: $17.83Valve guide wear is one of the most common failure points in high-performance engines, leading to oil consumption, blow-by, and reduced ring sealing. The KIBBLEWHITE Valve Guide 60-60520 is...09261665- SKU:
- 09261665
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- PRODUCT NAME:
- VALVE GUIDE
- MATERIAL:
- C630 BRONZE
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
- INSIDE DIAMETER IMPERIAL:
- 0.1765'
- OUTSIDE DIAMETER IMPERIAL:
- 0.3778'
- SIZE IMPERIAL:
- STANDARD
- APPLICATION:
- INTAKE
MSRP: $17.83Now: $16.05Was: $17.83 -
On Sale
KIBBLEWHITE Intake Valve Guide 80-80770
KIBBLEWHITE
MSRP: $22.29Now: $20.06Was: $22.29Valve guide wear directly compromises compression, increases oil consumption, and degrades cylinder sealing—all of which kill power and reliability. The KIBBLEWHITE 80-80770 Intake Valve Guide uses...09261687- SKU:
- 09261687
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- MATERIAL:
- C630 BRONZE
- PRODUCT NAME:
- VALVE GUIDE
- SIZE IMPERIAL:
- STANDARD
- OUTSIDE DIAMETER IMPERIAL:
- 0.4352'
- UNITS:
- EACH
- APPLICATION:
- INTAKE
- INSIDE DIAMETER IMPERIAL:
- 0.2165'
- RIDING STYLE:
- OFF-ROAD
MSRP: $22.29Now: $20.06Was: $22.29 -
On Sale
KIBBLEWHITE Exhaust Valve Guide 80-80780
KIBBLEWHITE
MSRP: $22.29Now: $20.06Was: $22.29Valve guide wear directly compromises combustion chamber seal and engine performance—this KIBBLEWHITE exhaust valve guide maintains precise bore tolerances and thermal stability under sustained...09261688- SKU:
- 09261688
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- MATERIAL:
- NICKEL
- SIZE IMPERIAL:
- STANDARD
- MATERIAL:
- AMPCO-45
- OUTSIDE DIAMETER IMPERIAL:
- 0.4352'
- PRODUCT NAME:
- VALVE GUIDE
- UNITS:
- EACH
- APPLICATION:
- EXHAUST
- INSIDE DIAMETER IMPERIAL:
- 0.2160'
- MATERIAL:
- BRONZE
- RIDING STYLE:
- OFF-ROAD
MSRP: $22.29Now: $20.06Was: $22.29 -
On Sale
KIBBLEWHITE Intake Valve 82-82155
KIBBLEWHITE
MSRP: $37.55Now: $33.80Was: $37.55Factory intake valves wear down under sustained heat and combustion pressure, robbing your engine of efficiency and reliability. The KIBBLEWHITE Black Diamond™ Intake Valve delivers measurable gains...09261689- SKU:
- 09261689
- Availability:
- Ships Same Business Day
- Weight:
- 0.06 LBS
- MODEL:
- BLACK DIAMOND™
- MATERIAL:
- STAINLESS STEEL
- PRODUCT NAME:
- VALVE
- RIDING STYLE:
- UTV
- UNITS:
- EACH
- APPLICATION:
- INTAKE
- HEAD DIAMETER METRIC:
- 37.72 MM
- LENGTH IMPERIAL:
- 3.775'
- STEM DIAMETER IMPERIAL:
- 0.2160'
- TULIP ANGLE:
- 17°
MSRP: $37.55Now: $33.80Was: $37.55
