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: $136.54Now: $122.89Was: $136.54High-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 applications and high-output builds, eliminating...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: $136.54Now: $122.89Was: $136.54 -
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 Ampco-45 copper-nickel alloy that outperforms cast iron in...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: $34.40 -
On Sale
KIBBLEWHITE Valve Spring Kit 30-3111
KIBBLEWHITE
MSRP: $99.26Now: $89.33Was: $99.26Valve 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 components with race-proven durability, ensuring...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: $99.26Now: $89.33Was: $99.26 -
On Sale
KIBBLEWHITE Intake Kit 40-40350
KIBBLEWHITE
MSRP: $185.23Now: $166.71Was: $185.23OEM 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 stainless steel alternatives that extend valvetrain life by...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: $185.23Now: $166.71Was: $185.23 -
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 to deliver superior heat transfer and exceptional...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 KIBBLEWHITE 30-3120 intake/exhaust valve guide delivers...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: $76.99Now: $69.29Was: $76.99Valve spring degradation directly impacts engine efficiency, compression consistency, and overall reliability—especially under sustained high-RPM loads. The KIBBLEWHITE 30-4021 Kit delivers OEM-quality valve control with premium materials engineered to...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: $76.99Now: $69.29Was: $76.99 -
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 copper-based valve seats deliver superior thermal conductivity...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 delivers the thermal conductivity and durability that...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 seats are engineered to handle the demands of racing...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 patterns of serious racing applications, delivering the...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 Iron Valve Seat 10-SC250 uses advanced powdered metal...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 Guide is engineered with Ampco-45, a copper-nickel...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 compound to deliver superior heat dissipation and wear...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 delivers superior corrosion resistance and reduced friction...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 uniform hardness and exceptional thermal stability...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 engineered to withstand extreme temperatures and...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 premium copper-nickel alloy—to deliver superior heat...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: $181.00Now: $162.90Was: $181.00High-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 to deliver the reliability and durability you need in...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: $181.00Now: $162.90Was: $181.00 -
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 engineered to outlast OEM components while maintaining precise...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
