Manley Ford Modular Coyote 5.0L Gen III Race Master Series Exhaust Valve Set - 1.260in Dia - 12629-8

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.

Features

• 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.

Specs

• Head Diameter: 1.260 in
• Stem Diameter: 0.2345 in
• O/A : 4.330 in. Backcut: 0.100" x 30?
• Set of 8
• Manley Valve
• Exhaust Valve
• Ti
• Briggs & Stratton Custom
• .2740 Stem
• Product Market: Domestic
• Head Diameter: 1.260
• Valve Head Diameter: 1.260
• Stem Diameter: 0.2345
• Valve Stem Diameter: 0.2345
• O/A Length: 4.330
• Valve Length: 4.330
• Valve Tip Length: 0.285
• Tip Length: 0.285
• Margin Width: 0.050
• Seat Width: 0.080
• Top of Head: 15 Degree Dish
• Valve Head Shape: 15 Degree Dish
• Underhead Angle: 20.00
• Underhead Radius: 5/16
• Valve Series: Race Series