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 Valve Spring Kit 30-3041
KIBBLEWHITE
MSRP: $146.10Now: $122.89Was: $146.10High-revving engines demand valve springs engineered for sustained performance under extreme conditions. KIBBLEWHITE's complete spring kit delivers the durability and consistency required for race...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
MSRP: $146.10Now: $122.89Was: $146.10 -
On Sale
KIBBLEWHITE Intake/Exhaust Valve Guide 30-3100
KIBBLEWHITE
MSRP: $34.40Now: $30.96Was: $34.40Valve guides are critical to engine longevity—they control oil consumption, maintain precise valve seating, and prevent catastrophic wear. The KIBBLEWHITE 30-3100 valve guide uses a proprietary...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
MSRP: $34.40Now: $30.96Was: $34.40Qty in Cart: 0Quantity:Price:MSRP: $34.40Now: $30.96Was: $34.40Subtotal: -
On Sale
KIBBLEWHITE Valve Spring Kit 30-3111
KIBBLEWHITE
MSRP: $106.20Now: $89.33Was: $106.20Valve spring degradation is one of the leading causes of performance loss and catastrophic engine failure in high-revving applications. The KIBBLEWHITE Valve Spring Kit 30-3111 delivers OEM-quality...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
MSRP: $106.20Now: $89.33Was: $106.20 -
On Sale
KIBBLEWHITE Intake Kit 40-40350
KIBBLEWHITE
MSRP: $198.20Now: $166.71Was: $198.20OEM titanium intake valves wear out faster than you'd like, especially under sustained high-RPM conditions. The KIBBLEWHITE Black Diamond intake valve kit replaces those factory components with...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'
MSRP: $198.20Now: $166.71Was: $198.20 -
On Sale
KIBBLEWHITE Intake Valve Guide 82-82220
KIBBLEWHITE
MSRP: $26.43Now: $23.79Was: $26.43Valve guide wear is one of the most common causes of oil consumption and compression loss in high-performance engines. The KIBBLEWHITE Intake Valve Guide 82-82220 is engineered with Ampco-45 compound...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
MSRP: $26.43Now: $23.79Was: $26.43 -
On Sale
KIBBLEWHITE Intake/Exhaust Valve Guide 30-3120
KIBBLEWHITE
MSRP: $34.40Now: $30.96Was: $34.40Valve guide wear is one of the most overlooked failure points in high-performance engines, leading to oil consumption, compression loss, and catastrophic valve seat damage if left unchecked. The...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
MSRP: $34.40Now: $30.96Was: $34.40 -
On Sale
KIBBLEWHITE Valve Spring Kit 30-4021
KIBBLEWHITE
MSRP: $82.38Now: $69.29Was: $82.38Valve spring degradation directly impacts engine efficiency, compression consistency, and overall reliability—especially under sustained high-RPM loads. The KIBBLEWHITE 30-4021 Kit delivers...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
MSRP: $82.38Now: $69.29Was: $82.38 -
On Sale
KIBBLEWHITE Valve Seat 10-SB290
KIBBLEWHITE
MSRP: $30.30Now: $27.27Was: $30.30If you're running titanium valves in a high-performance engine, seat material matters—it directly impacts durability, heat dissipation, and longevity under extreme conditions. KIBBLEWHITE's...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
MSRP: $30.30Now: $27.27Was: $30.30Qty in Cart: 0Quantity:Price:MSRP: $30.30Now: $27.27Was: $30.30Subtotal: -
On Sale
KIBBLEWHITE Valve Seat 10-SB320
KIBBLEWHITE
MSRP: $30.30Now: $27.27Was: $30.30If you're running titanium valves in a high-performance engine, you need a valve seat that can handle the thermal stress and keep up with the wear demands of racing. KIBBLEWHITE's copper-based design...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
MSRP: $30.30Now: $27.27Was: $30.30 -
On Sale
KIBBLEWHITE Valve Seat 10-SB330
KIBBLEWHITE
MSRP: $30.30Now: $27.27Was: $30.30If you're running titanium valves in a high-performance engine, valve seat material directly impacts reliability, thermal stability, and longevity under extreme conditions. KIBBLEWHITE's copper-based...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
MSRP: $30.30Now: $27.27Was: $30.30 -
On Sale
KIBBLEWHITE Valve Seat 10-SB340
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. The KIBBLEWHITE 10-SB340 is purpose-built to handle the thermal demands and wear...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
MSRP: $30.30Now: $27.27Was: $30.30 -
On Sale
KIBBLEWHITE Cast Iron Valve Seat 10-SC250
KIBBLEWHITE
MSRP: $7.78Now: $7.00Was: $7.78Valve seat recession and microwelding are silent killers in high-performance engines—they compromise compression, reduce power output, and can lead to catastrophic valve failure. The KIBBLEWHITE Cast...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
MSRP: $7.78Now: $7.00Was: $7.78 -
On Sale
KIBBLEWHITE Intake Valve Guide 30-30200
KIBBLEWHITE
MSRP: $15.92Now: $14.33Was: $15.92Valve guide wear is one of the most common causes of compression loss, oil burning, and poor ring sealing—issues that compound quickly under high RPM and boost. The KIBBLEWHITE 30-30200 Intake Valve...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
MSRP: $15.92Now: $14.33Was: $15.92 -
On Sale
KIBBLEWHITE Exhaust Valve Guide 30-30210
KIBBLEWHITE
MSRP: $15.92Now: $14.33Was: $15.92Valve guide wear is one of the most overlooked sources of performance loss and oil consumption in high-revving engines. The KIBBLEWHITE Exhaust Valve Guide 30-30210 is engineered with Ampco-45...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
MSRP: $15.92Now: $14.33Was: $15.92 -
On Sale
KIBBLEWHITE Intake Valve 30-30220
KIBBLEWHITE
MSRP: $31.01Now: $27.91Was: $31.01Intake valve performance directly impacts combustion efficiency, cylinder head sealing, and overall engine reliability—especially under high RPM conditions. The KIBBLEWHITE Black Diamond™ valve...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'
MSRP: $31.01Now: $27.91Was: $31.01 -
On Sale
KIBBLEWHITE Cast Iron Valve Seat 10-SC380
KIBBLEWHITE
MSRP: $9.44Now: $8.50Was: $9.44Valve seat recession and microwelding failures cost racers races and street enthusiasts reliability. The KIBBLEWHITE Cast Iron Valve Seat 10-SC380 uses advanced powdered metal technology to deliver...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
MSRP: $9.44Now: $8.50Was: $9.44 -
On Sale
KIBBLEWHITE Exhaust Valve 30-30224
KIBBLEWHITE
MSRP: $75.37Now: $67.83Was: $75.37Valve reliability directly impacts engine performance and longevity, especially in high-rpm applications where standard components fail prematurely. The KIBBLEWHITE Black Diamond™ exhaust valve is...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
MSRP: $75.37Now: $67.83Was: $75.37Qty in Cart: 0Quantity:Price:MSRP: $75.37Now: $67.83Was: $75.37Subtotal: -
On Sale
KIBBLEWHITE Exhaust Valve Guide 96-96300
KIBBLEWHITE
MSRP: $29.60Now: $26.64Was: $29.60Valve guides are critical to maintaining proper valve sealing and controlling oil consumption in high-performance engines. The KIBBLEWHITE Exhaust Valve Guide 96-96300 uses Ampco-45 material—a...09262420- SKU:
- 09262420
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- APPLICATION:
- EXHAUST
- MATERIAL:
- AMPCO-45
- OUTSIDE DIAMETER IMPERIAL:
- 0.4352'
- UNITS:
- EACH
- INSIDE DIAMETER IMPERIAL:
- 0.1955'
- MATERIAL:
- BRONZE
- PRODUCT NAME:
- VALVE GUIDE
- RIDING STYLE:
- OFF-ROAD
- MATERIAL:
- NICKEL
- SIZE IMPERIAL:
- STANDARD
MSRP: $29.60Now: $26.64Was: $29.60 -
On Sale
KIBBLEWHITE Beehive Valve Spring Kit 96-96500
KIBBLEWHITE
MSRP: $193.68Now: $162.90Was: $193.68High-RPM performance demands valve springs engineered to handle extreme torsional stress without compromise. KIBBLEWHITE's Beehive design uses advanced ovate wire geometry and precision manufacturing...09263042- SKU:
- 09263042
- Availability:
- Ships Same Business Day
- Weight:
- 0.46 LBS
- APPLICATION:
- INTAKE
- MATERIAL:
- STEEL
- PRODUCT NAME:
- SPRING KIT
- SPRING LIFT IMPERIAL:
- 0.435'
- SPRING SEAT PRESSURE:
- 80 IB
- COLLAR MATERIAL:
- STEEL
- MATERIAL:
- TITANIUM
- SPRING LIFT:
- 0,435'
- APPLICATION:
- EXHAUST
- SPRING OPEN PRESSURE:
- 205 LB
- STYLE:
- OVATE WIRE BEEHIVE
- TYPE:
- VALVE
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
MSRP: $193.68Now: $162.90Was: $193.68 -
On Sale
KIBBLEWHITE Intake Valve 96-96512
KIBBLEWHITE
MSRP: $54.10Now: $48.69Was: $54.10Intake valve performance directly impacts combustion efficiency, cylinder sealing, and overall engine reliability—especially under high-RPM conditions. Kibblewhite's Black Diamond™ valves are...09263043- SKU:
- 09263043
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- MODEL:
- BLACK DIAMOND™
- APPLICATION:
- INTAKE
- HEAD DIAMETER METRIC:
- 39.93 MM
- MATERIAL:
- STAINLESS STEEL
- PRODUCT NAME:
- VALVE
- STEM DIAMETER IMPERIAL:
- 0.2358'
- UNITS:
- EACH
- TULIP ANGLE:
- 15°
- LENGTH IMPERIAL:
- 3.675'
- RIDING STYLE:
- OFF-ROAD
MSRP: $54.10Now: $48.69Was: $54.10
