Supertech Performance GDE-MI66-STI Magnesium Bronze Valve Guides

The Supertech Performance GDE-MI66-STI Valve Guides are precision-machined from premium Magnesium Bronze, a material prized in high-performance engine applications for its excellent thermal conductivity, wear resistance, and dimensional stability under extreme heat. Engineered for demanding motorsport and performance street use, these guides are designed to deliver consistent valve alignment, extended service life, and superior heat dissipation compared to standard cast iron or sintered guides.

When paired with Supertech's low-friction nitrated valves, the GDE-MI66-STI guides form a highly optimized valve train assembly that reduces wear at the stem-to-guide interface, maintains tighter clearances over time, and supports higher RPM operation without sacrificing reliability.

Key Features:

• Precision-machined from high-quality Magnesium Bronze for superior wear resistance and thermal management
• Designed to complement Supertech low-friction nitrated valves for a complete, high-performance valve train solution
• Engineered to maintain precise valve alignment under high-load, high-heat racing conditions
• Manufactured to tight tolerances for a consistent, reliable press fit
• Ideal for performance builds, forced induction applications, and extended high-RPM use

Sold individually — per valve guide. Please order the quantity equal to the total number of valve guides required for your application. For example, a 16-valve engine requiring full replacement would need a quantity of 16.