MANLEY 11111-8 Exhaust Valve Kit Race Series for NISSAN SR20DE Engine

MANLEY 11111-8 Race Series Exhaust Valve Kit for Nissan SR20DE Engine

The MANLEY 11111-8 Exhaust Valve Kit is engineered specifically for high-performance applications in the Nissan SR20DE engine. Part of Manley’s acclaimed Race Series, this valve set is designed to withstand the extreme demands of drag, bracket, and oval racing environments operating under 8000 RPM. Manufactured from XH-426 stainless steel, the valves offer exceptional thermal stability, wear resistance, and airflow efficiency—ideal for alcohol-fueled engines in competitive motorsport settings.

• Precision-manufactured from high-strength XH-426 stainless steel
• Chrome-plated stems and hardened tips for extended wear resistance
• Swirl-polished underhead and fully machined combustion faces
• Race Master (straight stem) and Race Flo options available
• Recommended for use in alcohol-fueled performance engines

Specifications:

• Product Market: Sport Compact
• Head Diameter: 31.15 mm
• Stem Diameter: 0.2362 in / 6.00 mm
• Overall Length: 102.40 mm
• Tip Length: 3.50 mm
• Margin Width: 0.065 in
• Seat Width: 0.080 in
• Top of Head: 20° Dish
• Underhead Angle: 25.00°
• Underhead Radius: 11/32 in
• Valve Series: Race Series
• Valve Type: Exhaust
• Product Type: Engine Exhaust Valve Kit
• Valve Quantity: 8
• Engine Detail: DOHC 16 Valve (Nissan SR20DE)