Comp Cams Upper Seal Retainer O-Ring

Upper Seal Retainer O-ring

• Extreme application belt for high rpm and high compression durability
• Infinitely adjustable Vernier sprocket for absolute timing accuracy
• Unique belt idler system reduces flap throughout rpm range
• Designed to absorb crankshaft harmonics to guard against performance robbing valve train instability
• Utilizes a unique camshaft thrust adjustment system without shims
• Includes double lip seals for long life and maximum crankcase vacuum
• Ideal for serious street performance and race applications