Supertech Performance GDE-BMW-N55-E-12 Manganese Bronze Exhaust Valve Guides for BMW N55/S55

Engineered for maximum durability and precision, these valve guides reduce wear and improve valve train stability, making them ideal for racing and high-performance applications.

Key Features:

• Precision-machined from high-quality manganese bronze material for sport compact applications
• Designed to be used in combination with Supertech low friction black nitrided valves for optimal performance and durability
• 6mm stem diameter for exhaust valve compatibility
• Engineered with superior thermal transfer coefficient for high-powered engines

Perfect for engine rebuilds, high-mileage valvetrain refreshes, or performance upgrades on N55 and S55 engines. Supertech valve guides are crafted to withstand extreme conditions, making them an excellent choice for street performance, track day, and racing applications. Professional installation by an experienced engine builder is recommended for proper fitment and optimal results.