Supertech Performance GDE-HS255-E Magnesium Bronze Valve Guide

The Supertech Performance GDE-HS255-E is a precision-machined valve guide crafted from high-quality Magnesium Bronze alloy — a material prized in performance and racing applications for its superior thermal conductivity, corrosion resistance, and ability to withstand extreme heat cycles. Designed to provide precise valve stem alignment and optimal heat transfer away from the valve head, these guides are a critical component in maintaining combustion efficiency and engine longevity.

When paired with Supertech's low-friction nitrated valves, the GDE-HS255-E delivers an industry-leading combination of reduced wear, tighter tolerances, and extended service life — making them an ideal upgrade for high-performance street, track, and competition engines.

Key Features:

• Material: High-quality Magnesium Bronze for superior heat dissipation and wear resistance
• Precision machined to exacting tolerances for consistent valve stem clearance
• Excellent compatibility with Supertech nitrated performance valves for reduced friction
• Ideal for high-revving, high-temperature performance and racing applications
• Drop-in replacement or performance upgrade for OEM valve guides

Important: Valve guides are sold individually (per valve guide). Please order the exact quantity required for your application. For example, a 16-valve engine requires a quantity of 16.