4S1M VALVE SEAL 4.5MM 2PCS

The 4S1M Valve Seal 4.5MM is engineered to provide superior sealing performance in high-RPM and daily-use engines. It features a dual-spring design that enhances stability and prevents oil leakage into the combustion chamber, reducing smoke and improving overall engine health. This valve seal is ideal for riders upgrading their engine internals or replacing worn-out OEM seals for better compression and cleaner combustion.Features:Dual-Spring Design: Ensures tight sealing under high RPM and thermal stressOil Control: Prevents oil from entering the combustion chamber, reducing smoke and carbon buildupDurability: Built to withstand heat and pressure in performance or daily-use enginesUniversal Fit: Compatible with models like Yamaha Sniper 135, Mio Sporty, and Suzuki Raider 150 (with 4.5 mm stems)