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!
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Hot Cams Valve Shim 8.90mm x 2.52mm for KTM 250 SX-F 2005-2011 5PK890252
HOT CAMS
$11.95Valve shim clearance directly impacts combustion efficiency, valve timing accuracy, and engine longevity on high-revving 4-stroke engines like the KTM 250 SX-F. Over time, shims wear and compress,...09261369- SKU:
- 09261369
- Availability:
- Ships Same Business Day
- Weight:
- 0.02 LBS
$11.95Qty in Cart: 0Quantity:Price:$11.95Subtotal: -
MOOSE OFFROAD Valve Seal Kit M60-60490
MOOSE OFFROAD
$15.95OEM valve seals wear out and leak, causing blow-by, oil consumption, and performance loss. The MOOSE OFFROAD Valve Seal Kit M60-60490 replaces your factory seals with precision-engineered components...09262826- SKU:
- 09262826
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
$15.95 -
On Sale
KIBBLEWHITE Spring Kit 30-33600
KIBBLEWHITE
MSRP: $213.03Now: $191.73Was: $213.03If you're running boost or pushing your engine to its limits, valvetrain control becomes non-negotiable. The KIBBLEWHITE Spring Kit 30-33600 delivers the spring rates and component durability needed...09263377- SKU:
- 09263377
- Availability:
- Ships Same Business Day
- Weight:
- 0.75 LBS
MSRP: $213.03Now: $191.73Was: $213.03 -
On Sale
KIBBLEWHITE Valve Kit - Intake 30-34000
KIBBLEWHITE
MSRP: $184.09Now: $165.68Was: $184.09A properly functioning intake valve system is fundamental to engine reliability and performance—worn or substandard valves compromise compression, increase blowby, and accelerate wear on your entire...09263378- SKU:
- 09263378
- Availability:
- Ships Same Business Day
- Weight:
- 0.70 LBS
MSRP: $184.09Now: $165.68Was: $184.09 -
On Sale
KIBBLEWHITE Valve - Intake - Black Diamond* 30-33612
KIBBLEWHITE
MSRP: $37.55Now: $33.80Was: $37.55Intake valve performance directly impacts combustion efficiency and engine reliability—particularly under high-RPM racing conditions where standard valves falter. Kibblewhite's Black Diamond valves...09263379- SKU:
- 09263379
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
MSRP: $37.55Now: $33.80Was: $37.55 -
On Sale
KIBBLEWHITE Valve - Exhaust - Black Diamond* 30-33616
KIBBLEWHITE
MSRP: $37.55Now: $33.80Was: $37.55If you're running high-RPM applications or pushing your engine to its limits, valve quality directly impacts reliability and longevity. The Kibblewhite Black Diamond Exhaust Valve delivers the...09263380- SKU:
- 09263380
- Availability:
- Ships Same Business Day
- Weight:
- 0.21 LBS
MSRP: $37.55Now: $33.80Was: $37.55 -
On Sale
KIBBLEWHITE Valve Guide - Intake - Standard 30-33620
KIBBLEWHITE
MSRP: $24.89Now: $22.40Was: $24.89Valve guides are critical to maintaining proper valve seat geometry and preventing blow-by that kills performance and reliability. KIBBLEWHITE's Ampco-45 construction ensures superior heat...09263381- SKU:
- 09263381
- Availability:
- Ships Same Business Day
- Weight:
- 0.26 LBS
MSRP: $24.89Now: $22.40Was: $24.89 -
On Sale
KIBBLEWHITE Valve Guide - Intake - +0.010" 30-33629
KIBBLEWHITE
MSRP: $24.89Now: $22.40Was: $24.89Worn valve guides compromise cylinder head integrity and allow oil to seep into the combustion chamber, killing performance and reliability. KIBBLEWHITE intake valve guides are precision-engineered...09263382- SKU:
- 09263382
- Availability:
- Ships Same Business Day
- Weight:
- 0.26 LBS
MSRP: $24.89Now: $22.40Was: $24.89 -
On Sale
KIBBLEWHITE Valve Guide - Exhaust - Standard 30-33630
KIBBLEWHITE
MSRP: $24.89Now: $22.40Was: $24.89Exhaust valve guides experience extreme thermal cycling and abrasive wear—they're critical to maintaining valve sealing integrity and engine longevity. The KIBBLEWHITE Standard 30-33630 uses Ampco-45...09263383- SKU:
- 09263383
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
MSRP: $24.89Now: $22.40Was: $24.89 -
On Sale
KIBBLEWHITE Valve Guide - Exhaust - +0.010" 30-33639
KIBBLEWHITE
MSRP: $22.95Now: $20.66Was: $22.95Worn or damaged valve guides compromise cylinder head integrity and allow oil to seep into combustion chambers, reducing performance and increasing emissions. KIBBLEWHITE's +0.010" exhaust valve...09263384- SKU:
- 09263384
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
MSRP: $22.95Now: $20.66Was: $22.95 -
On Sale
KIBBLEWHITE Spring Kit 40-41600
KIBBLEWHITE
MSRP: $213.03Now: $191.73Was: $213.03If you're running a forced induction setup or high-lift cam profile, stock valve springs will cost you reliability and peak power. The KIBBLEWHITE Spring Kit 40-41600 delivers the valvetrain control...09263385- SKU:
- 09263385
- Availability:
- Ships Same Business Day
- Weight:
- 0.53 LBS
MSRP: $213.03Now: $191.73Was: $213.03 -
On Sale
KIBBLEWHITE Valve Kit - Intake 40-41650
KIBBLEWHITE
MSRP: $168.62Now: $151.76Was: $168.62Your engine's intake valves are constantly under extreme thermal and mechanical stress—worn or substandard valves will compromise combustion efficiency, increase friction losses, and accelerate wear...09263386- SKU:
- 09263386
- Availability:
- Ships Same Business Day
- Weight:
- 0.45 LBS
MSRP: $168.62Now: $151.76Was: $168.62 -
On Sale
KIBBLEWHITE Valve - Intake - White Diamond 40-41612H
KIBBLEWHITE
MSRP: $31.01Now: $27.91Was: $31.01Kibblewhite's White Diamond intake valves are engineered for maximum durability and thermal stability in high-performance applications. Built from premium EV8 stainless steel or Inconel-751 and...09263387- SKU:
- 09263387
- Availability:
- Ships Same Business Day
- Weight:
- 0.07 LBS
MSRP: $31.01Now: $27.91Was: $31.01 -
On Sale
KIBBLEWHITE Valve - Exhaust - White Diamond 40-41616H
KIBBLEWHITE
MSRP: $31.01Now: $27.91Was: $31.01Exhaust valve performance directly impacts your engine's scavenging efficiency, combustion temperature stability, and overall power delivery. Kibblewhite's White Diamond exhaust valves are...09263388- SKU:
- 09263388
- Availability:
- Ships Same Business Day
- Weight:
- 0.02 LBS
MSRP: $31.01Now: $27.91Was: $31.01 -
On Sale
KIBBLEWHITE Valve - Exhaust - Tensilite 40-41616T
KIBBLEWHITE
MSRP: $92.51Now: $83.26Was: $92.51Exhaust valves are critical to your engine's efficiency and longevity—especially under high RPM conditions where standard steel valves struggle with heat stress and wear. Kibblewhite's Tensilite...09263390- SKU:
- 09263390
- Availability:
- Ships Same Business Day
- Weight:
- 0.21 LBS
MSRP: $92.51Now: $83.26Was: $92.51 -
On Sale
KIBBLEWHITE Valve Guide - Intake - Standard 40-41620
KIBBLEWHITE
MSRP: $24.89Now: $22.40Was: $24.89Valve guides are critical to your engine's longevity and performance—they maintain proper valve alignment, reduce oil consumption, and prevent wear that can lead to catastrophic engine failure...09263391- SKU:
- 09263391
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
MSRP: $24.89Now: $22.40Was: $24.89 -
On Sale
KIBBLEWHITE Valve Guide - Intake - +0.010" 40-41629
KIBBLEWHITE
MSRP: $22.95Now: $20.66Was: $22.95Valve guides wear faster than most engine components, especially under sustained high-RPM operation or boost pressure. A worn intake valve guide introduces excessive valve-to-seat play, killing...09263392- SKU:
- 09263392
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
MSRP: $22.95Now: $20.66Was: $22.95 -
On Sale
KIBBLEWHITE Valve Guide - Exhaust - Standard 40-41630
KIBBLEWHITE
MSRP: $24.89Now: $22.40Was: $24.89Exhaust valve guides are critical wear points in any high-performance engine, and inadequate materials lead to excessive clearance, oil consumption, and compromised sealing. The KIBBLEWHITE Valve...09263393- SKU:
- 09263393
- Availability:
- Ships Same Business Day
- Weight:
- 0.26 LBS
MSRP: $24.89Now: $22.40Was: $24.89 -
On Sale
KIBBLEWHITE Valve Guide - Exhaust - +0.010" 40-41639
KIBBLEWHITE
MSRP: $22.95Now: $20.66Was: $22.95Exhaust valve guides are critical wear components that endure extreme temperatures and constant thermal cycling—choosing the right material makes the difference between a guide that lasts and one...09263394- SKU:
- 09263394
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
MSRP: $22.95Now: $20.66Was: $22.95 -
MOOSE RACING Intake Valve M40-41650
MOOSE RACING
$196.95Stock intake valves are often the limiting factor in engine breathing efficiency—premature wear and suboptimal flow characteristics directly impact power output and reliability. The MOOSE RACING...09263371- SKU:
- 09263371
- Availability:
- Ships Same Business Day
- Weight:
- 0.46 LBS
$196.95
