Manley’s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM

• Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.
• Chrome Stems and Hard Tips: Chrome stems and hard tips are incorporated for enhanced longevity and wear resistance.
• Swirl Polished and Fully Machined: The valves feature swirl polished under head areas and fully machined combustion faces to optimize airflow and combustion efficiency.
• Variety of Shapes: Choose between Race Master (Straight Stem) and Race Flo shapes to suit your racing engine’s specific requirements.
• Recommended for Alcohol Engines: These valves are the recommended choice for exhaust valves in alcohol engines, ensuring reliable performance even in demanding conditions.

The valves are finished off with a fully machined, swirl polished finish, and come with a 32mm (Standard) or 33mm head diameter (+1mm).

Specifications: 
Notes: Race Series Valves; Exhaust; Set of 8
Stem Diameter: 6.0mm/.2362"
Tip Length: 3.5mm
Top of Head: 20° Dish
Installed Height: Stock
Margin: 0.06
Head Diameter: 32mm
O/A Length: 104.75mm
Underhead Angle/Radius: 25° x 11/32"
Seat Width: .080"

*Photos for marketing purposes only. Actual product may vary in appearance / style.