King B-Series/K-Series Performance Main Bearings (STDX) suspension 5mm Viton valve stem seal

5mm Viton valve stem seal set delivers OEM-quality sealing for Honda K-series exhaust valves

Essential maintenance component for any B18C1 GSR build or restoration project

advanced crown architecture

This SpeedFactory billet battery tie down delivers OEM-quality retention for Honda and Acura applications

and racing applications where reliability matters

King B-Series/K-Series Performance Main Bearings (STDX) suspension 5mm Viton valve stem sealKing B Series K Series Performance Main Bearings deliver precision engineering for high performance Honda engines. These STDX standard size bearings feature advanced metallurgy and tight tolerances to withstand extreme combustion pressures and sustained RPM loads. Engineered for forced induction and naturally aspirated builds, they provide superior load capacity and reduced friction for maximum horsepower transfer. Essential for serious engine