As low as $9.33/mo with or . (Pay in 4 interest-free payments)
COMETIC Evo Big Twin / Twin Cam Valve Stem Seal Premium valve stem seals engineered for modern V-Twin performance. The COMETIC Evo seals deliver reliable sealing, reduced oil consumption, and long-lasting durability for Evo Big Twin and Twin Cam engines. Features & Benefits Advanced materials — formulated to resist heat, oil breakdown, and wear for extended service life. Precision manufacturing — tight tolerances ensure a consistent seal around the valve stem to prevent leaks and improve combustion stability. Performance-focused design — optimized for the higher power and RPM ranges of modern V-Twin engines. Direct fit — made to match OEM dimensions for hassle-free installation on Evo Big Twin and Twin Cam applications. Reduced emissions & oil use — helps minimize oil passing into the combustion chamber, improving efficiency and lowering smoke. At COMETIC, we continuously refine materials, manufacturing processes, and designs to meet the demands of today's powerful V-Twin engines. Choose Evo valve stem seals for a dependable, high-performance sealing solution you can trust.
At Cometic Gasket, our goal is to offer the latest in gasket technology
Materials, manufacturing processes and gasket designs are constantly improving to match the higher level of performance for today's powerful V-Twin engines
You can rest assured that every component will be the best solution for your application
or 
. (Pay in 4 interest-free payments)
