Kibblewhite Precision Guide In/Exh +0.002

• Type: Valve Guide

The Kibblewhite Precision Valve Guide is designed for optimal airflow and durability in high-temperature conditions. Its streamlined profile enhances airflow, and the flange or transition design ensures proper guide protrusion for precision installation. Manufactured with tight concentricity tolerances, these guides improve valve-to-seat sealing and oil control while reducing material removal during valve jobs. Constructed from C630 Racing Bronze or Manganese Bronze, these guides offer excellent thermal conductivity and wear resistance. The C630 Racing Bronze contains 80% copper, 5% nickel, and 10% aluminum, providing superior durability and corrosion resistance, especially for use with modern fuels. The Manganese Bronze variant, with 60% copper, balances affordability with high-speed anti-galling properties. Both materials are designed for compatibility with aluminum cylinder heads. Each kit includes two valve guides unless otherwise noted.