Premium C630 Racing and Manganese Racing Bronze Valve Guide - Guide Exhaust Std

Guide Exhaust Std

• California Prop 65 Warning: Cancer and Reproductive Harm - https://www.p65warnings.ca.gov/
• Type: Valve Guide

The Kibblewhite Exhaust Valve Guide is designed for high-performance applications, offering durability and optimized airflow. Made from C630 Racing Bronze, it contains 80% copper for superior heat conductivity, along with 5% nickel and 10% aluminum for enhanced wear and corrosion resistance. The high copper content improves thermal transfer, while the nickel and aluminum increase strength, making it ideal for demanding engine conditions. The guide profile is engineered to minimize airflow obstruction while maintaining critical thickness in high-temperature areas, improving both performance and longevity. In many cases, simply installing the guide enhances airflow without additional modifications. A built-in flange ensures proper protrusion for optimal seal-to-retainer clearance, streamlining installation by eliminating the need for repeated measurements. Where a flange is not feasible, a diameter reduction marks the correct protrusion. Manufactured to precise tolerances, these guides maintain ideal geometry between the valve seat and guide, reducing material removal during valve jobs and ensuring consistent chamber volumes. The material's resistance to galling allows for tighter clearances, improving valve-to-seat sealing and oil control. The kit includes two valve guides unless otherwise noted.