AFR® – 10° Titanium Valve Spring Retainer Published in Replacement Engine Parts Designed to meet the needs of racers or street enthusiasts Made using the latest in modern technology and advanced processes Strict quality control and thorough testing Manufactured in the USA Related posts: Brodix® – Track 1™ Series Aluminum Cylinder Heads Del West® – Titanium Valve AFR® – Engine Valve AFR® – Valve Locks