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, throwing off critical valve lash tolerances and robbing...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 that deliver superior sealing performance and...09262826- SKU:
- 09262826
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
$15.95 -
KIBBLEWHITE Spring Kit 30-33600
KIBBLEWHITE
$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 to maintain precise valve timing and lift at high RPMs,...09263377- SKU:
- 09263377
- Availability:
- Ships Same Business Day
- Weight:
- 0.75 LBS
$213.03 -
KIBBLEWHITE Valve Kit - Intake 30-34000
KIBBLEWHITE
$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 drivetrain. The KIBBLEWHITE Valve Kit delivers Black...09263378- SKU:
- 09263378
- Availability:
- Ships Same Business Day
- Weight:
- 0.70 LBS
$184.09 -
KIBBLEWHITE Valve - Intake - Black Diamond* 30-33612
KIBBLEWHITE
$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 use proprietary multi-stage processing to reduce...09263379- SKU:
- 09263379
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
$37.55 -
KIBBLEWHITE Valve - Exhaust - Black Diamond* 30-33616
KIBBLEWHITE
$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 precision engineering and material science needed to handle...09263380- SKU:
- 09263380
- Availability:
- Ships Same Business Day
- Weight:
- 0.21 LBS
$37.55 -
KIBBLEWHITE Valve Guide - Intake - Standard 30-33620
KIBBLEWHITE
$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 dissipation and wear resistance, keeping your intake valves...09263381- SKU:
- 09263381
- Availability:
- Ships Same Business Day
- Weight:
- 0.26 LBS
$24.89 -
KIBBLEWHITE Valve Guide - Intake - +0.010" 30-33629
KIBBLEWHITE
$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 from Ampco-45 to restore proper valve sealing and heat...09263382- SKU:
- 09263382
- Availability:
- Ships Same Business Day
- Weight:
- 0.26 LBS
$24.89 -
KIBBLEWHITE Valve Guide - Exhaust - Standard 30-33630
KIBBLEWHITE
$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 bronze, a copper-nickel alloy specifically engineered...09263383- SKU:
- 09263383
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
$24.89 -
On Sale
KIBBLEWHITE Valve Guide - Exhaust - +0.010" 30-33639
KIBBLEWHITE
MSRP: $22.95Now: $16.00Was: $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 guides are precision-engineered to restore proper valve...09263384- SKU:
- 09263384
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
MSRP: $22.95Now: $16.00Was: $22.95 -
KIBBLEWHITE Spring Kit 40-41600
KIBBLEWHITE
$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 needed to safely maximize RPM without float or valve...09263385- SKU:
- 09263385
- Availability:
- Ships Same Business Day
- Weight:
- 0.53 LBS
$213.03 -
KIBBLEWHITE Valve Kit - Intake 40-41650
KIBBLEWHITE
$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 on your entire valve train. The KIBBLEWHITE Black...09263386- SKU:
- 09263386
- Availability:
- Ships Same Business Day
- Weight:
- 0.45 LBS
$168.62 -
KIBBLEWHITE Valve - Intake - White Diamond 40-41612H
KIBBLEWHITE
$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 finished with hard chrome electroplating, these valves...09263387- SKU:
- 09263387
- Availability:
- Ships Same Business Day
- Weight:
- 0.07 LBS
$31.01 -
KIBBLEWHITE Valve - Exhaust - White Diamond 40-41616H
KIBBLEWHITE
$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 precision-engineered to withstand extreme heat cycles and...09263388- SKU:
- 09263388
- Availability:
- Ships Same Business Day
- Weight:
- 0.02 LBS
$31.01 -
KIBBLEWHITE Valve - Exhaust - Tensilite 40-41616T
KIBBLEWHITE
$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 exhaust valves are engineered for precision and durability,...09263390- SKU:
- 09263390
- Availability:
- Ships Same Business Day
- Weight:
- 0.21 LBS
$92.51 -
KIBBLEWHITE Valve Guide - Intake - Standard 40-41620
KIBBLEWHITE
$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. KIBBLEWHITE's Ampco-45 construction delivers superior heat...09263391- SKU:
- 09263391
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
$24.89 -
On Sale
KIBBLEWHITE Valve Guide - Intake - +0.010" 40-41629
KIBBLEWHITE
MSRP: $22.95Now: $16.00Was: $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 compression, leaning out the fuel mixture, and allowing oil...09263392- SKU:
- 09263392
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
MSRP: $22.95Now: $16.00Was: $22.95 -
KIBBLEWHITE Valve Guide - Exhaust - Standard 40-41630
KIBBLEWHITE
$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 Guide – Exhaust delivers superior heat dissipation and...09263393- SKU:
- 09263393
- Availability:
- Ships Same Business Day
- Weight:
- 0.26 LBS
$24.89Qty in Cart: 0Quantity:Price:$24.89Subtotal: -
On Sale
KIBBLEWHITE Valve Guide - Exhaust - +0.010" 40-41639
KIBBLEWHITE
MSRP: $22.95Now: $16.00Was: $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 that fails prematurely. This KIBBLEWHITE exhaust valve...09263394- SKU:
- 09263394
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
MSRP: $22.95Now: $16.00Was: $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 M40-41650 addresses this with precision engineering that...09263371- SKU:
- 09263371
- Availability:
- Ships Same Business Day
- Weight:
- 0.46 LBS
$196.95
