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 - Titanium - KTM 96-96412T
KIBBLEWHITE
MSRP: $109.33Now: $98.40Was: $109.33Titanium intake valves are essential for high-RPM engines where thermal expansion and weight savings directly impact performance and reliability. The Kibblewhite Tensilite® design reduces inertial losses, allowing faster valve actuation and more precise...09262706- SKU:
- 09262706
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- MATERIAL:
- TITANIUM
- MODEL:
- TENSILITE®
- APPLICATION:
- INTAKE
- HEAD DIAMETER METRIC:
- 32.51 MM
- PRODUCT NAME:
- VALVE
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
- STEM DIAMETER IMPERIAL:
- 0.1960'
- TULIP ANGLE:
- 15°
MSRP: $109.33Now: $98.40Was: $109.33 -
On Sale
KIBBLEWHITE Intake Valve 80-8055H
KIBBLEWHITE
MSRP: $54.10Now: $48.69Was: $54.10Intake valves are critical to engine reliability and performance—they're the gateway to your combustion chamber, and any weakness here translates to lost horsepower and potential catastrophic failure. The KIBBLEWHITE White Diamond™ valve delivers...KW808055H- SKU:
- KW808055H
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- STEM DIAMETER IMPERIAL:
- 0.1765'
- HEAD DIAMETER METRIC:
- 27.00 MM
- LENGTH IMPERIAL:
- 3.320'
- MATERIAL:
- STEEL
- PRODUCT NAME:
- VALVE
- SIZE METRIC:
- STANDARD
- APPLICATION:
- INTAKE
- UNITS:
- EACH
- MODEL:
- WHITE DIAMOND™
- RIDING STYLE:
- OFF-ROAD
- TULIP ANGLE:
- 15°
MSRP: $54.10Now: $48.69Was: $54.10 -
On Sale
KIBBLEWHITE Intake Valve Guide 30-30930
KIBBLEWHITE
MSRP: $15.92Now: $14.33Was: $15.92Valve guides are critical to controlling oil consumption and maintaining precise valve seat alignment under extreme combustion pressures. A worn or damaged guide compromises engine sealing, increases blow-by, and accelerates cylinder head wear. The...09260412- SKU:
- 09260412
- Availability:
- Ships Same Business Day
- Weight:
- 0.11 LBS
- INSIDE DIAMETER IMPERIAL:
- 0.2155'
- APPLICATION:
- INTAKE
- PRODUCT NAME:
- VALVE GUIDE
- RIDING STYLE:
- ATV
- UNITS:
- EACH
- MATERIAL:
- C630 BRONZE
- OUTSIDE DIAMETER IMPERIAL:
- 0.4360'
- SIZE IMPERIAL:
- STANDARD
MSRP: $15.92Now: $14.33Was: $15.92 -
On Sale
KIBBLEWHITE Intake Valve Guide 30-31170
KIBBLEWHITE
MSRP: $15.92Now: $14.33Was: $15.92Valve guide wear is one of the most common causes of oil consumption and reduced engine efficiency in high-performance applications. The KIBBLEWHITE Intake Valve Guide 30-31170 delivers superior heat dissipation and wear resistance, keeping your intake...09260438- SKU:
- 09260438
- Availability:
- Ships Same Business Day
- Weight:
- 0.01 LBS
- INSIDE DIAMETER IMPERIAL:
- 0.1960'
- MATERIAL:
- C630 BRONZE
- RIDING STYLE:
- OFF-ROAD
- APPLICATION:
- INTAKE
- OUTSIDE DIAMETER IMPERIAL:
- 0.3965'
- SIZE IMPERIAL:
- STANDARD
- UNITS:
- EACH
- PRODUCT NAME:
- VALVE GUIDE
MSRP: $15.92Now: $14.33Was: $15.92Qty in Cart: 0Quantity:Price:MSRP: $15.92Now: $14.33Was: $15.92Subtotal: -
On Sale
KIBBLEWHITE Exhaust Valve 30-3117
KIBBLEWHITE
MSRP: $37.55Now: $33.80Was: $37.55Exhaust valves endure extreme heat cycles and aggressive combustion pressures—factory originals often become the weak link in high-performance builds. The KIBBLEWHITE Black Diamond™ Exhaust Valve (30-3117) is engineered to handle sustained RPMs and...KW303117- SKU:
- KW303117
- Availability:
- Ships Same Business Day
- Weight:
- 0.13 LBS
- MODEL:
- BLACK DIAMOND™
- TULIP ANGLE:
- 29°
- LENGTH IMPERIAL:
- 3.980'
- MATERIAL:
- STAINLESS STEEL
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
- APPLICATION:
- EXHAUST
- HEAD DIAMETER METRIC:
- 29.00 MM
- PRODUCT NAME:
- VALVE
- RIDING STYLE:
- ATV
- STEM DIAMETER IMPERIAL:
- 0.2150'
MSRP: $37.55Now: $33.80Was: $37.55 -
On Sale
KIBBLEWHITE Cast Iron Valve Seat 10-SC280
KIBBLEWHITE
MSRP: $8.12Now: $7.31Was: $8.12Valve seat recession is one of the fastest ways to lose compression and combustion efficiency in high-performance engines—especially when running aggressive fuel blends or boost. KIBBLEWHITE's Cast Iron Valve Seats use proprietary powdered metal...09261630- SKU:
- 09261630
- Availability:
- Ships Same Business Day
- Weight:
- 0.07 LBS
- VALVE SEAT HEIGHT METRIC:
- 9.50 MM
- HEAD DIAMETER METRIC:
- 28.00 MM
- INSIDE DIAMETER METRIC:
- 20.00 MM
- MATERIAL:
- STEEL
- OUTSIDE DIAMETER METRIC:
- 28.00 MM
- RIDING STYLE:
- OFF-ROAD
- APPLICATION:
- EXHAUST
- PRODUCT NAME:
- VALVE SEAT
- UNITS:
- EACH
MSRP: $8.12Now: $7.31Was: $8.12 -
On Sale
KIBBLEWHITE Cast Iron Valve Seat 10-SC350
KIBBLEWHITE
MSRP: $9.02Now: $8.12Was: $9.02Valve seat recession and microwelding failure can cost you a race—or worse, leave you stranded on the street. KIBBLEWHITE's cast iron valve seats are engineered with powdered metal technology to deliver uniform hardness, exceptional heat dissipation, and...09261636- SKU:
- 09261636
- Availability:
- Ships Same Business Day
- Weight:
- 0.07 LBS
- INSIDE DIAMETER METRIC:
- 26.00 MM
- UNITS:
- EACH
- APPLICATION:
- EXHAUST
- OUTSIDE DIAMETER METRIC:
- 35.00 MM
- HEAD DIAMETER METRIC:
- 35.00 MM
- PRODUCT NAME:
- VALVE SEAT
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
- VALVE SEAT HEIGHT METRIC:
- 10.00 MM
MSRP: $9.02Now: $8.12Was: $9.02Qty in Cart: 0Quantity:Price:MSRP: $9.02Now: $8.12Was: $9.02Subtotal: -
On Sale
KIBBLEWHITE Valve Guide - Intake 96-96520-I
KIBBLEWHITE
MSRP: $22.95Now: $20.66Was: $22.95Valve guides are critical to maintaining proper valve stem clearance and preventing oil seepage into your combustion chamber—a worn guide will compromise both performance and engine longevity. The KIBBLEWHITE Intake Valve Guide delivers...09263045- SKU:
- 09263045
- Availability:
- Ships Same Business Day
- Weight:
- 0.06 LBS
- MATERIAL:
- CAST IRON
- OUTSIDE DIAMETER IMPERIAL:
- 0.4352'
- APPLICATION:
- INTAKE
- PRODUCT NAME:
- VALVE GUIDE
- SIZE IMPERIAL:
- STANDARD
- UNITS:
- EACH
- INSIDE DIAMETER IMPERIAL:
- 0.2353'
- RIDING STYLE:
- OFF-ROAD
MSRP: $22.95Now: $20.66Was: $22.95 -
On Sale
KIBBLEWHITE Intake Valve Guide 80-80110
KIBBLEWHITE
MSRP: $22.29Now: $20.06Was: $22.29Valve guides are critical to engine longevity—they maintain precise valve alignment, prevent wear on valve stems, and directly impact combustion efficiency and port flow. The KIBBLEWHITE 80-80110 is precision-machined from C630 material with a tapered...09263097- SKU:
- 09263097
- Availability:
- Ships Same Business Day
- Weight:
- 0.06 LBS
- APPLICATION:
- INTAKE
- UNITS:
- EACH
- BASE COLOR:
- BROWN
- PRODUCT NAME:
- VALVE GUIDE
- MATERIAL:
- C630 BRONZE
- OUTSIDE DIAMETER IMPERIAL:
- 0.3957'
- RIDING STYLE:
- OFF-ROAD
- COLOR/FINISH:
- BRONZE
- INSIDE DIAMETER IMPERIAL:
- 0.1765'
- SIZE IMPERIAL:
- STANDARD
MSRP: $22.29Now: $20.06Was: $22.29 -
On Sale
KIBBLEWHITE Cylinder Head Service Kit 30-33310
KIBBLEWHITE
MSRP: $466.90Now: $420.21Was: $466.90A complete cylinder head refresh demands precision components that work in concert—and the KIBBLEWHITE 30-33310 Service Kit delivers exactly that. This comprehensive kit eliminates the guesswork of sourcing compatible valve springs, guides, and gaskets...09263117- SKU:
- 09263117
- Availability:
- Ships Same Business Day
- Weight:
- 1.05 LBS
- MATERIAL:
- TITANIUM
- SPRING SEAT PRESSURE:
- 50 LB
- UNITS:
- KIT
- APPLICATION:
- EXHAUST
- SPRING LIFT:
- 0,385'
- MATERIAL:
- C630 BRONZE
- RIDING STYLE:
- OFF-ROAD
- SPRING LIFT IMPERIAL:
- 0.385'
- SPRING OPEN PRESSURE:
- 160 LB
- APPLICATION:
- INTAKE
- MODEL:
- BLACK DIAMOND™
- PRODUCT NAME:
- CYLINDER HEAD SERVICE KIT
MSRP: $466.90Now: $420.21Was: $466.90Qty in Cart: 0Quantity:Price:MSRP: $466.90Now: $420.21Was: $466.90Subtotal: -
On Sale
KIBBLEWHITE Spring Kit 30-32400
KIBBLEWHITE
MSRP: $229.93Now: $206.94Was: $229.93A properly engineered valve spring kit is essential for maintaining consistent valve seating, preventing float at high RPMs, and ensuring reliable performance under sustained load. The KIBBLEWHITE Spring Kit 30-32400 delivers OEM-quality construction...09262980- SKU:
- 09262980
- Availability:
- Ships Same Business Day
- Weight:
- 0.50 LBS
- APPLICATION:
- INTAKE
- RIDING STYLE:
- OFF-ROAD
- SPRING OPEN PRESSURE:
- 160 LB
- TYPE:
- VALVE
- UNITS:
- KIT
- MATERIAL:
- TITANIUM
- PRODUCT NAME:
- SPRING KIT
- SPRING LIFT IMPERIAL:
- 0.380'
- APPLICATION:
- EXHAUST
MSRP: $229.93Now: $206.94Was: $229.93Qty in Cart: 0Quantity:Price:MSRP: $229.93Now: $206.94Was: $229.93Subtotal: -
On Sale
KIBBLEWHITE Exhaust Valve 30-32416
KIBBLEWHITE
MSRP: $37.55Now: $33.80Was: $37.55Exhaust valves are critical components that directly impact engine efficiency, reliability, and longevity. The KIBBLEWHITE Black Diamond™ 30-32416 is engineered to withstand extreme temperatures and combustion pressures while maintaining precise...09262983- SKU:
- 09262983
- Availability:
- Ships Same Business Day
- Weight:
- 0.01 LBS
- HEAD DIAMETER METRIC:
- 25.00 MM
- MATERIAL:
- STAINLESS STEEL
- PRODUCT NAME:
- VALVE
- TULIP ANGLE:
- 20°
- UNITS:
- EACH
- APPLICATION:
- EXHAUST
- MODEL:
- BLACK DIAMOND™
- LENGTH IMPERIAL:
- 3.310'
- RIDING STYLE:
- OFF-ROAD
- STEM DIAMETER IMPERIAL:
- 0.1956'
MSRP: $37.55Now: $33.80Was: $37.55 -
On Sale
KIBBLEWHITE Exhaust Valve - Stantard - Tensilite‚® - CRF250R 30-32416T
KIBBLEWHITE
MSRP: $109.33Now: $98.40Was: $109.33Exhaust valve performance directly impacts your CRF250R's scavenging efficiency and peak horsepower delivery. KIBBLEWHITE's Tensilite® valves are precision-forged from aerospace-grade titanium and finished with a CrN PVD coating—delivering superior heat...09262986- SKU:
- 09262986
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- APPLICATION:
- EXHAUST
- RIDING STYLE:
- OFF-ROAD
- STEM DIAMETER IMPERIAL:
- 0.1956'
- PRODUCT NAME:
- VALVE
- TULIP ANGLE:
- 20°
- HEAD DIAMETER METRIC:
- 25.00 MM
- MATERIAL:
- TITANIUM
- MODEL:
- TENSILITE®
- UNITS:
- EACH
MSRP: $109.33Now: $98.40Was: $109.33Qty in Cart: 0Quantity:Price:MSRP: $109.33Now: $98.40Was: $109.33Subtotal: -
On Sale
KIBBLEWHITE Exhaust Valve 80-81316
KIBBLEWHITE
MSRP: $37.55Now: $33.80Was: $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
MSRP: $37.55Now: $33.80Was: $37.55Qty in Cart: 0Quantity:Price:MSRP: $37.55Now: $33.80Was: $37.55Subtotal: -
On Sale
KIBBLEWHITE Intake Valve Kit 40-41450
KIBBLEWHITE
MSRP: $185.23Now: $166.71Was: $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'
MSRP: $185.23Now: $166.71Was: $185.23Qty in Cart: 0Quantity:Price:MSRP: $185.23Now: $166.71Was: $185.23Subtotal: -
On Sale
KIBBLEWHITE Valve Guide 96-96521
KIBBLEWHITE
MSRP: $24.89Now: $22.40Was: $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
MSRP: $24.89Now: $22.40Was: $24.89Qty in Cart: 0Quantity:Price:MSRP: $24.89Now: $22.40Was: $24.89Subtotal: -
On Sale
KIBBLEWHITE Valve Conversion Kit 80-82350
KIBBLEWHITE
MSRP: $172.15Now: $154.94Was: $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
MSRP: $172.15Now: $154.94Was: $172.15Qty in Cart: 0Quantity:Price:MSRP: $172.15Now: $154.94Was: $172.15Subtotal: -
On Sale
KIBBLEWHITE Intake Valve 80-82312
KIBBLEWHITE
MSRP: $31.01Now: $27.91Was: $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
MSRP: $31.01Now: $27.91Was: $31.01Qty in Cart: 0Quantity:Price:MSRP: $31.01Now: $27.91Was: $31.01Subtotal: -
On Sale
KIBBLEWHITE Cylinder Head Service Kit 30-33460
KIBBLEWHITE
MSRP: $403.24Now: $362.92Was: $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
MSRP: $403.24Now: $362.92Was: $403.24 -
On Sale
KIBBLEWHITE Intake Valve - CRF150R - Standard 30-30910
KIBBLEWHITE
MSRP: $37.55Now: $33.80Was: $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
MSRP: $37.55Now: $33.80Was: $37.55
