GSC Super Alloy STD Exhaust Valves B58/S58 - 12pc

GSC Super Alloy Exhaust Valves – BMW B58 / S58

Built for extreme performance, GSC Power-Division Super Alloy Exhaust Valves are designed for high-horsepower builds running elevated exhaust temperatures. Engineered to withstand up to 2,000°F, these valves deliver exceptional durability, strength, and reliability for demanding street, track, and race applications.

Each valve features a chrome-polished stem for reduced friction and improved lubrication, especially when paired with GSC manganese bronze valve guides. A lightweight under-head design reduces mass, while the swirl-polished and back-cut valve head improves airflow without sacrificing durability.

Perfect for high-boost setups where strength and heat resistance are critical.

🔧 Key Features

• Designed for BMW B58 & S58 engines

• Withstands up to 2,000°F exhaust temperatures

• Chrome-polished stems for smoother operation

• Improved airflow with swirl-polished & back-cut valve heads

• Lightweight design for better performance

• Ideal for high-boost & high-horsepower builds

📏 Specifications

• Valve Size: 28.5mm (Standard)