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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KIBBLEWHITE Intake Valve - CRF450X - 2005-2007 - Standard 30-31062
KIBBLEWHITE
$31.01Black Diamond™ valves are CNC machined from one-piece forgings of EV8 Stainless Steel, Black Diamond™ proprietary multi-stage process reduces friction, and provides superior resistance to corrosion and wear, Made in the U.S.A.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™
$31.01 -
KIBBLEWHITE Intake Valve - CRF250R - 2008 - Standard 30-31162
KIBBLEWHITE
$37.55Black Diamond™ valves are CNC machined from one-piece forgings of EV8 Stainless Steel, Black Diamond™ proprietary multi-stage process reduces friction, and provides superior resistance to corrosion and wear, Made in the U.S.A.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'
$37.55 -
KIBBLEWHITE Exhaust Valve - CRF250R - 2008 - Standard 30-31166
KIBBLEWHITE
$37.55Black Diamond™ valves are CNC machined from one-piece forgings of EV8 Stainless Steel, Black Diamond™ proprietary multi-stage process reduces friction, and provides superior resistance to corrosion and wear, Made in the U.S.A.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
$37.55 -
KIBBLEWHITE Valve Spring Kit 30-3041
KIBBLEWHITE
$136.54Black Diamond™ valves feature one-piece stainless steel construction with stellite tips and special impregnation to improve wear properties and reduce friction; White Diamond® valves feature one-piece construction and hard chrome stems, Spring sets...KW303041- SKU:
- KW303041
- Availability:
- Ships Same Business Day
- Weight:
- 0.50 LBS
- SPRING LIFT IMPERIAL:
- 0.400'
- APPLICATION:
- INTAKE
- MATERIAL:
- CHROME-SILICON
- SPRING OPEN PRESSURE:
- 192 LB
- SPRING SEAT PRESSURE:
- 76 LB
- UNITS:
- KIT
- APPLICATION:
- EXHAUST
- PRODUCT NAME:
- SPRING KIT
- RIDING STYLE:
- ATV
- SPRING LIFT:
- 0,400'
- TYPE:
- VALVE
$136.54 -
KIBBLEWHITE Intake/Exhaust Valve Guide 30-3100
KIBBLEWHITE
$34.40All valve guides are made of Ampco-45, a high-performance compound with 80% copper content to provide great heat conductivity and 5% nickel content for wear resistance, Made in the U.S.A.KW303100- SKU:
- KW303100
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- APPLICATION:
- EXHAUST
- MATERIAL:
- AMPCO-45
- MATERIAL:
- NICKEL
- SIZE IMPERIAL:
- STANDARD
- UNITS:
- EACH
- APPLICATION:
- INTAKE
- OUTSIDE DIAMETER IMPERIAL:
- 0.4355'
- PRODUCT NAME:
- VALVE GUIDE
- INSIDE DIAMETER IMPERIAL:
- 0.2155'
- MATERIAL:
- BRONZE
- RIDING STYLE:
- OFF-ROAD
$34.40 -
KIBBLEWHITE Valve Spring Kit 30-3111
KIBBLEWHITE
$99.26Black Diamond™ valves feature one-piece stainless steel construction with stellite tips and special impregnation to improve wear properties and reduce friction; White Diamond® valves feature one-piece construction and hard chrome stems, Spring sets...KW303111- SKU:
- KW303111
- Availability:
- Ships Same Business Day
- Weight:
- 0.44 LBS
- MATERIAL:
- TITANIUM
- SPRING LIFT:
- 0,300'
- SPRING SEAT PRESSURE:
- 70 LB
- UNITS:
- KIT
- APPLICATION:
- INTAKE
- MATERIAL:
- STEEL
- SPRING OPEN PRESSURE:
- 157 LB
- APPLICATION:
- EXHAUST
- PRODUCT NAME:
- SPRING KIT
- RIDING STYLE:
- ATV
- SPRING LIFT IMPERIAL:
- 0.300'
- TYPE:
- VALVE
$99.26 -
KIBBLEWHITE Intake Kit 40-40350
KIBBLEWHITE
$185.23Stainless steel conversion kit includes only what's needed to convert your head to the long-life stainless steel Black Diamond intake valves, Extends the life of the valvetrain and intake components by as much as 4x over the OEM titanium parts, Includes...09260452- SKU:
- 09260452
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- MATERIAL:
- STAINLESS STEEL
- SPRING LIFT:
- 0,445'
- SPRING OPEN PRESSURE:
- 155 LB
- APPLICATION:
- INTAKE
- PRODUCT NAME:
- VALVE KIT
- SPRING SEAT PRESSURE:
- 46 LB
- TYPE:
- CONVERSION
- SPRING LIFT IMPERIAL:
- 0.445'
$185.23 -
KIBBLEWHITE Intake Valve Guide 82-82220
KIBBLEWHITE
$26.43All valve guides are made of Ampco-45, a high-performance compound with 80% copper content to provide great heat conductivity and 5% nickel content for wear resistance, Made in the U.S.A.09261174- SKU:
- 09261174
- Availability:
- Ships Same Business Day
- Weight:
- 0.06 LBS
- PRODUCT NAME:
- VALVE GUIDE
- MATERIAL:
- C630 BRONZE
- APPLICATION:
- INTAKE
- INSIDE DIAMETER IMPERIAL:
- 0.2360'
- SIZE IMPERIAL:
- STANDARD
- OUTSIDE DIAMETER IMPERIAL:
- 0.4950'
- RIDING STYLE:
- ATV
- UNITS:
- EACH
$26.43 -
KIBBLEWHITE Intake/Exhaust Valve Guide 30-3120
KIBBLEWHITE
$34.40All valve guides are made of Ampco-45, a high-performance compound with 80% copper content to provide great heat conductivity and 5% nickel content for wear resistance, Made in the U.S.A.KW303120- SKU:
- KW303120
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- INSIDE DIAMETER IMPERIAL:
- 0.2150'
- OUTSIDE DIAMETER IMPERIAL:
- 0.4355'
- PRODUCT NAME:
- VALVE GUIDE
- SIZE IMPERIAL:
- STANDARD
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
- APPLICATION:
- EXHAUST
- MATERIAL:
- AMPCO-45
- RIDING STYLE:
- ATV
$34.40 -
KIBBLEWHITE Valve Spring Kit 30-4021
KIBBLEWHITE
$76.99Black Diamond™ valves feature one-piece stainless steel construction with stellite tips and special impregnation to improve wear properties and reduce friction; White Diamond® valves feature one-piece construction and hard chrome stems, Spring sets...KW304021- SKU:
- KW304021
- Availability:
- Ships Same Business Day
- Weight:
- 0.30 LBS
- SPRING LIFT:
- 0,450'
- SPRING OPEN PRESSURE:
- 202 LB
- TYPE:
- VALVE
- APPLICATION:
- INTAKE
- MATERIAL:
- TITANIUM
- PRODUCT NAME:
- SPRING KIT
- SPRING LIFT IMPERIAL:
- 0.450'
- SPRING SEAT PRESSURE:
- 66 LB
- APPLICATION:
- EXHAUST
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
$76.99 -
KIBBLEWHITE Valve Seat 10-SB290
KIBBLEWHITE
$30.30Copper-based material designed specifically for use with titanium valves in high performance applications, Give the seat excellent thermal characteristics as well as resistance to corrosion and wear, These seats are the result of a two year KPMI R&D...09261621- SKU:
- 09261621
- Availability:
- Ships Same Business Day
- Weight:
- 0.06 LBS
- APPLICATION:
- INTAKE
- INSIDE DIAMETER METRIC:
- 21.00 MM
- OUTSIDE DIAMETER METRIC:
- 29.00 MM
- RIDING STYLE:
- OFF-ROAD
- VALVE SEAT HEIGHT METRIC:
- 9.50 MM
- MATERIAL:
- TITANIUM
- PRODUCT NAME:
- VALVE SEAT
- UNITS:
- EACH
$30.30 -
KIBBLEWHITE Valve Seat 10-SB320
KIBBLEWHITE
$30.30Copper-based material designed specifically for use with titanium valves in high performance applications, Give the seat excellent thermal characteristics as well as resistance to corrosion and wear, These seats are the result of a two year KPMI R&D...09261623- SKU:
- 09261623
- Availability:
- Ships Same Business Day
- Weight:
- 0.06 LBS
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- OFF-ROAD
- VALVE SEAT HEIGHT METRIC:
- 9.50 MM
- APPLICATION:
- INTAKE
- MATERIAL:
- TITANIUM
- PRODUCT NAME:
- VALVE SEAT
- OUTSIDE DIAMETER METRIC:
- 32.00 MM
- INSIDE DIAMETER METRIC:
- 24.00 MM
- UNITS:
- EACH
$30.30 -
KIBBLEWHITE Valve Seat 10-SB330
KIBBLEWHITE
$30.30Copper-based material designed specifically for use with titanium valves in high performance applications, Give the seat excellent thermal characteristics as well as resistance to corrosion and wear, These seats are the result of a two year KPMI R&D...09261624- SKU:
- 09261624
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- RIDING STYLE:
- OFF-ROAD
- VALVE SEAT HEIGHT METRIC:
- 9.50 MM
- MATERIAL:
- TITANIUM
- PRODUCT NAME:
- VALVE SEAT
- APPLICATION:
- EXHAUST
- INSIDE DIAMETER METRIC:
- 24.00 MM
- OUTSIDE DIAMETER METRIC:
- 33.00 MM
- UNITS:
- EACH
$30.30 -
KIBBLEWHITE Valve Seat 10-SB340
KIBBLEWHITE
$30.30Copper-based material designed specifically for use with titanium valves in high performance applications, Give the seat excellent thermal characteristics as well as resistance to corrosion and wear, These seats are the result of a two year KPMI R&D...09261625- SKU:
- 09261625
- Availability:
- Ships Same Business Day
- Weight:
- 0.06 LBS
- APPLICATION:
- INTAKE
- MATERIAL:
- TITANIUM
- OUTSIDE DIAMETER METRIC:
- 34.00 MM
- VALVE SEAT HEIGHT METRIC:
- 9.50 MM
- INSIDE DIAMETER METRIC:
- 26.00 MM
- RIDING STYLE:
- OFF-ROAD
- PRODUCT NAME:
- VALVE SEAT
- UNITS:
- EACH
$30.30 -
KIBBLEWHITE Cast Iron Valve Seat 10-SC250
KIBBLEWHITE
$7.78Premium valve seats for applications using steel valves, A specific combination of alloys allowed a creation of a high density, iron-based valve seat with uniform hardness, exceptional thermal qualities and high resistance to wear and recession caused by...09261629- SKU:
- 09261629
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- INSIDE DIAMETER METRIC:
- 17.00 MM
- OUTSIDE DIAMETER METRIC:
- 25.00 MM
- RIDING STYLE:
- OFF-ROAD
- APPLICATION:
- INTAKE
- HEAD DIAMETER METRIC:
- 25.00 MM
- VALVE SEAT HEIGHT METRIC:
- 9.00 MM
- MATERIAL:
- STEEL
- PRODUCT NAME:
- VALVE SEAT
- UNITS:
- EACH
$7.78 -
KIBBLEWHITE Intake Valve Guide 30-30200
KIBBLEWHITE
$15.92All valve guides are made of Ampco-45, a high-performance compound with 80% copper content to provide great heat conductivity and 5% nickel content for wear resistance, Made in the U.S.A.20080200- SKU:
- 20080200
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- INSIDE DIAMETER IMPERIAL:
- 0.2155'
- MATERIAL:
- BRONZE
- APPLICATION:
- INTAKE
- MATERIAL:
- AMPCO-45
- PRODUCT NAME:
- VALVE GUIDE
- MATERIAL:
- NICKEL
- SIZE IMPERIAL:
- STANDARD
- UNITS:
- EACH
- OUTSIDE DIAMETER IMPERIAL:
- 0.4360'
- RIDING STYLE:
- OFF-ROAD
$15.92 -
KIBBLEWHITE Exhaust Valve Guide 30-30210
KIBBLEWHITE
$15.92All valve guides are made of Ampco-45, a high-performance compound with 80% copper content to provide great heat conductivity and 5% nickel content for wear resistance, Made in the U.S.A.20080210- SKU:
- 20080210
- Availability:
- Ships Same Business Day
- Weight:
- 0.30 LBS
- MATERIAL:
- BRONZE
- APPLICATION:
- EXHAUST
- MATERIAL:
- NICKEL
- OUTSIDE DIAMETER IMPERIAL:
- 0.4360'
- RIDING STYLE:
- OFF-ROAD
- PRODUCT NAME:
- VALVE GUIDE
- SIZE IMPERIAL:
- STANDARD
- INSIDE DIAMETER IMPERIAL:
- 0.1955'
- MATERIAL:
- AMPCO-45
- UNITS:
- EACH
$15.92 -
KIBBLEWHITE Intake Valve 30-30220
KIBBLEWHITE
$31.01Black Diamond™ valves are CNC machined from one-piece forgings of EV8 Stainless Steel, Black Diamond™ proprietary multi-stage process reduces friction, and provides superior resistance to corrosion and wear, Made in the U.S.A.20080220- SKU:
- 20080220
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- APPLICATION:
- INTAKE
- PRODUCT NAME:
- VALVE
- UNITS:
- EACH
- RIDING STYLE:
- OFF-ROAD
- TULIP ANGLE:
- 20°
- MATERIAL:
- STEEL
- HEAD DIAMETER METRIC:
- 36.00 MM
- LENGTH IMPERIAL:
- 3.315'
- MODEL:
- BLACK DIAMOND™
- STEM DIAMETER IMPERIAL:
- 0.2158'
$31.01 -
KIBBLEWHITE Cast Iron Valve Seat 10-SC380
KIBBLEWHITE
$9.44Premium valve seats for applications using steel valves, A specific combination of alloys allowed a creation of a high density, iron-based valve seat with uniform hardness, exceptional thermal qualities and high resistance to wear and recession caused by...09261637- SKU:
- 09261637
- Availability:
- Ships Same Business Day
- Weight:
- 0.07 LBS
- HEAD DIAMETER METRIC:
- 38.50 MM
- PRODUCT NAME:
- VALVE SEAT
- RIDING STYLE:
- ATV
- UNITS:
- EACH
- APPLICATION:
- INTAKE
- MATERIAL:
- STEEL
- OUTSIDE DIAMETER METRIC:
- 38.50 MM
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- OFF-ROAD
- INSIDE DIAMETER METRIC:
- 29.00 MM
- VALVE SEAT HEIGHT METRIC:
- 10.00 MM
$9.44 -
KIBBLEWHITE Exhaust Valve 30-30224
KIBBLEWHITE
$75.37Black Diamond™ valves are CNC machined from one-piece forgings of EV8 Stainless Steel, Black Diamond™ proprietary multi-stage process reduces friction, and provides superior resistance to corrosion and wear, Made in the U.S.A.20080224- SKU:
- 20080224
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- MODEL:
- BLACK DIAMOND™
- STEM DIAMETER IMPERIAL:
- 0.1957'
- LENGTH IMPERIAL:
- 3.320'
- PRODUCT NAME:
- VALVE
- APPLICATION:
- EXHAUST
- HEAD DIAMETER METRIC:
- 32.00 MM
- RIDING STYLE:
- OFF-ROAD
- TULIP ANGLE:
- 20°
- MATERIAL:
- STEEL
- UNITS:
- EACH
$75.37
