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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DEL WEST Intake Valve DW-RMZ450-IV08
DEL WEST
$155.95If you're pushing your RMZ450 to its limits in competition, valve reliability directly impacts your power delivery and engine longevity. DEL WEST's intake valves have earned their reputation through real-world off-road racing, where failure isn't an...09261066- SKU:
- 09261066
- Availability:
- Ships Same Business Day
- Weight:
- 0.06 LBS
- APPLICATION:
- INTAKE
- RIDING STYLE:
- OFF-ROAD
- PRODUCT NAME:
- VALVE
- MATERIAL:
- TITANIUM
- UNITS:
- EACH
$155.95 -
DEL WEST Intake Valve DW-KX250F-IV09
DEL WEST
$155.95If you're pushing your KX250F to its limits in competitive off-road conditions, valve reliability becomes non-negotiable. DEL WEST intake valves are engineered to withstand the extreme thermal and mechanical stresses of high-RPM racing, giving you the...09261053- SKU:
- 09261053
- Availability:
- Ships Same Business Day
- Weight:
- 0.07 LBS
- PRODUCT NAME:
- VALVE
- UNITS:
- EACH
- APPLICATION:
- INTAKE
- RIDING STYLE:
- OFF-ROAD
- MATERIAL:
- TITANIUM
$155.95 -
DEL WEST Exhaust Valve DW-CRF250R-EV04
DEL WEST
$155.95If you're running a CRF250R in competition, valve reliability under sustained high RPM is non-negotiable. DEL WEST's track-proven exhaust valve delivers the durability and precision tolerances that separate consistent podium finishes from catastrophic...09261041- SKU:
- 09261041
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- APPLICATION:
- EXHAUST
- PRODUCT NAME:
- VALVE
- MATERIAL:
- TITANIUM
- UNITS:
- EACH
- RIDING STYLE:
- OFF-ROAD
$155.95Qty in Cart: 0Quantity:Price:$155.95Subtotal: -
Wiseco Intake Valve Honda CRF150R 2007-2021 VIS016
WISECO
$28.95The stock intake valve on your CRF150R won't cut it if you're running harder and hotter than the factory intended. Wiseco's VIS016 intake valve uses advanced CVD/CNI surface treatments to drastically reduce wear and friction—meaning your engine breathes...09260694- SKU:
- 09260694
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- APPLICATION:
- INTAKE
- MATERIAL:
- STAINLESS STEEL
- PRODUCT NAME:
- VALVE
- UNITS:
- EACH
- RIDING STYLE:
- OFF-ROAD
$28.95 -
Wiseco Exhaust Valve Honda CRF150R 2007-2021 VES016
WISECO
$38.95Exhaust valves are among the most thermally stressed components in your engine, and factory units often struggle under sustained high RPM operation. The Wiseco VES016 is purpose-built to handle the extreme temperatures and repeated stress cycles that...09260692- SKU:
- 09260692
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- MATERIAL:
- STAINLESS STEEL
- PRODUCT NAME:
- VALVE
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
- APPLICATION:
- EXHAUST
$38.95 -
Hot Cams Valve Shim 9.48mm x 2.55mm for Honda CRF450R 2002-2009 5PK948255
HOT CAMS
$10.95Valve clearance directly impacts engine efficiency, combustion timing, and overall reliability—even small deviations can reduce power output or cause premature wear. The HOT CAMS Valve Shim 5-pack gives you precision adjustments to dial in optimal...09261399- SKU:
- 09261399
- Availability:
- Ships Same Business Day
- Weight:
- 0.02 LBS
- OUTSIDE DIAMETER METRIC:
- 9.48 MM
- PRODUCT NAME:
- SHIM
- RIDING STYLE:
- SNOW
- RIDING STYLE:
- UTV
- RIDING STYLE:
- WATERCRAFT
- TYPE:
- VALVE
- UNITS:
- 5 PACK
- VALVE SHIM THICKNESS METRIC:
- 2.55 MM
- RIDING STYLE:
- ATV
- RIDING STYLE:
- STREET
- MATERIAL:
- STEEL
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- OFF-ROAD
$10.95 -
Hot Cams Valve Shim 9.48mm x 2.85mm 5PK948285
HOT CAMS
$10.95Valve clearance directly impacts combustion efficiency, engine longevity, and overall performance—and these Hot Cams shims let you dial in exact specifications without guesswork. Whether you're rebuilding a top end, fine-tuning a race engine, or...09261405- SKU:
- 09261405
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- RIDING STYLE:
- ATV
- TYPE:
- VALVE
- MATERIAL:
- STEEL
- OUTSIDE DIAMETER METRIC:
- 9.48 MM
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- OFF-ROAD
- RIDING STYLE:
- SNOW
- PRODUCT NAME:
- SHIM
- RIDING STYLE:
- STREET
- RIDING STYLE:
- UTV
- RIDING STYLE:
- WATERCRAFT
- UNITS:
- 5 PACK
- VALVE SHIM THICKNESS METRIC:
- 2.85 MM
$10.95 -
XCELDYNE Intake Valve Springs PSIMX2006
XCELDYNE
$75.57If you're serious about extracting maximum horsepower from your engine, valve spring selection is non-negotiable. The XCELDYNE Intake Valve Springs PSIMX2006 deliver measurable performance gains through a precision low-drag design that reduces parasitic...09261269- SKU:
- 09261269
- Availability:
- Ships Same Business Day
- Weight:
- 0.19 LBS
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- VALVE
- APPLICATION:
- INTAKE
- PRODUCT NAME:
- SPRING
- UNITS:
- PAIR
$75.57 -
On Sale
XCELDYNE Exhaust Valve Springs PSIMX2008
XCELDYNE
MSRP: $75.57Now: $48.00Was: $75.57Exhaust valve springs are critical to maintaining consistent valve sealing and preventing float at high RPMs—especially in offroad applications where engine stress and thermal cycling push standard components to their limits. The XCELDYNE PSIMX2008 is...09261271- SKU:
- 09261271
- Availability:
- Ships Same Business Day
- Weight:
- 0.24 LBS
- MATERIAL:
- TITANIUM
- APPLICATION:
- EXHAUST
- PRODUCT NAME:
- SPRING
- TYPE:
- VALVE
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- PAIR
MSRP: $75.57Now: $48.00Was: $75.57Qty in Cart: 0Quantity:Price:MSRP: $75.57Now: $48.00Was: $75.57Subtotal: -
XCELDYNE X2 Titanium Valve - Intake X2TIVM42004
XCELDYNE
$110.19Off-road performance demands valves engineered for both maximum flow and maximum durability—the XCELDYNE X2 Titanium Valve delivers both without compromise. Built with a high-flow design and full CrN coating, this intake valve resists wear and thermal...09262887- SKU:
- 09262887
- Availability:
- Ships Same Business Day
- Weight:
- 0.08 LBS
- MATERIAL:
- TITANIUM
- APPLICATION:
- INTAKE
- RIDING STYLE:
- OFF-ROAD
- PRODUCT NAME:
- VALVE TRAIN KIT
- UNITS:
- KIT
$110.19 -
XCELDYNE X2 Titanium Valve - Intake X2TIVM43008
XCELDYNE
$110.19Off-road performance demands valve integrity that won't compromise under extreme conditions. The XCELDYNE X2 Titanium Valve delivers the flow characteristics and material durability required to extract maximum power while maintaining reliability across...09262898- SKU:
- 09262898
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- PRODUCT NAME:
- VALVE
- MATERIAL:
- TITANIUM
- APPLICATION:
- INTAKE
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
$110.19Qty in Cart: 0Quantity:Price:$110.19Subtotal: -
Wiseco Valve Kit YZ250F 2001-2013 SVKB2402
WISECO
$445.95Worn or degraded valves compromise combustion efficiency and can lead to costly engine damage. The Wiseco Valve Kit SVKB2402 restores your YZ250F's intake and exhaust flow with precision-engineered components that handle the demands of high-RPM racing...09263065- SKU:
- 09263065
- Availability:
- Ships Same Business Day
- Weight:
- 1.00 LBS
- MATERIAL:
- STEEL
- PRODUCT NAME:
- VALVE KIT
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- APPLICATION:
- EXHAUST
- APPLICATION:
- INTAKE
$445.95Qty in Cart: 0Quantity:Price:$445.95Subtotal: -
Wiseco Valve Kit for Suzuki RM-Z250 2007-2020 SVKB3338
WISECO
$365.95Stock valve assemblies on your RM-Z250 wear down quickly under aggressive riding, causing loss of compression and compromised engine response. The Wiseco SVKB3338 Valve Kit delivers a complete solution with matched steel valves and precision springs that...09263070- SKU:
- 09263070
- Availability:
- Ships Same Business Day
- Weight:
- 0.95 LBS
- PRODUCT NAME:
- VALVE KIT
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- APPLICATION:
- EXHAUST
- MATERIAL:
- STEEL
- APPLICATION:
- INTAKE
$365.95 -
On Sale
PROX Valveshim - 10.00 x 2.60 - 5 pack 29.100260
PROX
MSRP: $9.95Now: $8.00Was: $9.95Valve shims are critical wear items in high-lift, high-RPM engines where precision clearance directly impacts valve timing and engine longevity. The PROX Valveshim 10.00 x 2.60 delivers OEM-equivalent performance at a fraction of the cost, making it an...09261005- SKU:
- 09261005
- Availability:
- Ships Same Business Day
- Weight:
- 0.02 LBS
- RIDING STYLE:
- OFF-ROAD
- PRODUCT NAME:
- SHIM KIT
- TYPE:
- VALVE
- UNITS:
- 5 PACK
- OUTSIDE DIAMETER METRIC:
- 10.00 MM
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- STREET
- VALVE SHIM THICKNESS METRIC:
- 2.60 MM
MSRP: $9.95Now: $8.00Was: $9.95 -
On Sale
PROX Valveshim - 10.00 x 2.65 - 5 pack 29.100265
PROX
MSRP: $9.95Now: $8.00Was: $9.95Valve shim wear is one of the most common causes of valvetrain noise and loss of performance in high-revving engines. The PROX Valveshim delivers OEM-equivalent precision at a fraction of the cost, allowing you to maintain exact valve clearances without...09261006- SKU:
- 09261006
- Availability:
- Ships Same Business Day
- Weight:
- 0.02 LBS
- TYPE:
- VALVE
- PRODUCT NAME:
- SHIM KIT
- UNITS:
- 5 PACK
- OUTSIDE DIAMETER METRIC:
- 10.00 MM
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- STREET
- VALVE SHIM THICKNESS METRIC:
- 2.65 MM
- RIDING STYLE:
- OFF-ROAD
MSRP: $9.95Now: $8.00Was: $9.95Qty in Cart: 0Quantity:Price:MSRP: $9.95Now: $8.00Was: $9.95Subtotal: -
On Sale
PROX Valveshim - 10.00 x 2.70 - 5 pack 29.100270
PROX
MSRP: $9.95Now: $8.00Was: $9.95Valve shims are critical wear items that directly impact your engine's valve clearance, compression ratio, and overall performance consistency. PROX Valveshims deliver precision-engineered replacements at a fraction of OEM costs, making them the smart...09261007- SKU:
- 09261007
- Availability:
- Ships Same Business Day
- Weight:
- 0.02 LBS
- OUTSIDE DIAMETER METRIC:
- 10.00 MM
- TYPE:
- VALVE
- VALVE SHIM THICKNESS METRIC:
- 2.70 MM
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- SHIM KIT
- UNITS:
- 5 PACK
- RIDING STYLE:
- OFF-ROAD
MSRP: $9.95Now: $8.00Was: $9.95 -
On Sale
PROX Valveshim - 10.00 x 2.75 - 5 pack 29.100275
PROX
MSRP: $9.95Now: $8.00Was: $9.95Valve shim maintenance is critical to engine performance and longevity, yet OEM replacements come with premium pricing that adds up quickly across multiple shims. The PROX Valveshim 10.00 x 2.75 delivers precision-engineered durability at a fraction of...09261008- SKU:
- 09261008
- Availability:
- Ships Same Business Day
- Weight:
- 0.02 LBS
- TYPE:
- VALVE
- RIDING STYLE:
- OFF-ROAD
- OUTSIDE DIAMETER METRIC:
- 10.00 MM
- VALVE SHIM THICKNESS METRIC:
- 2.75 MM
- PRODUCT NAME:
- SHIM KIT
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- STREET
- UNITS:
- 5 PACK
MSRP: $9.95Now: $8.00Was: $9.95 -
On Sale
PROX Valveshim - 10.00 x 2.80 - 5 pack 29.100280
PROX
MSRP: $9.95Now: $8.00Was: $9.95Valve shim wear directly impacts engine timing precision and performance—especially critical in high-revving builds where tolerance stacking compounds over time. PROX Valveshims deliver OEM-equivalent durability at a fraction of the cost, making them the...09261009- SKU:
- 09261009
- Availability:
- Ships Same Business Day
- Weight:
- 0.02 LBS
- TYPE:
- VALVE
- VALVE SHIM THICKNESS METRIC:
- 2.80 MM
- OUTSIDE DIAMETER METRIC:
- 10.00 MM
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- OFF-ROAD
- PRODUCT NAME:
- SHIM KIT
- RIDING STYLE:
- STREET
- UNITS:
- 5 PACK
MSRP: $9.95Now: $8.00Was: $9.95 -
On Sale
PROX Valveshim - 10.00 x 2.85 - 5 pack 29.100285
PROX
MSRP: $9.95Now: $8.00Was: $9.95Valve shim replacement is one of the most routine maintenance tasks in performance engine building, and using quality OEM-equivalent parts directly impacts your engine's longevity and reliability. The PROX Valveshim 10.00 x 2.85 delivers...09261010- SKU:
- 09261010
- Availability:
- Ships Same Business Day
- Weight:
- 0.02 LBS
- OUTSIDE DIAMETER METRIC:
- 10.00 MM
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- STREET
- VALVE SHIM THICKNESS METRIC:
- 2.85 MM
- PRODUCT NAME:
- SHIM KIT
- TYPE:
- VALVE
- UNITS:
- 5 PACK
- RIDING STYLE:
- OFF-ROAD
MSRP: $9.95Now: $8.00Was: $9.95 -
On Sale
PROX Valveshim - 10.00 x 2.90 - 5 pack 29.100290
PROX
MSRP: $9.95Now: $8.00Was: $9.95Valve shim replacement is a critical maintenance task that directly impacts engine performance, valve timing accuracy, and overall reliability. The PROX Valveshim offers a cost-effective alternative to OEM shims without compromising the precision and...09261011- SKU:
- 09261011
- Availability:
- Ships Same Business Day
- Weight:
- 0.02 LBS
- OUTSIDE DIAMETER METRIC:
- 10.00 MM
- PRODUCT NAME:
- SHIM KIT
- TYPE:
- VALVE
- UNITS:
- 5 PACK
- VALVE SHIM THICKNESS METRIC:
- 2.90 MM
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- STREET
- RIDING STYLE:
- OFF-ROAD
MSRP: $9.95Now: $8.00Was: $9.95
