SKF KIT-OSB-49S Fork Oil Seal is a single-leg replacement kit for 49 mm Showa motorcycle forks, pairing an oil seal with a dust wiper to seal the fork leg and resist dust ingress. The OSB-49S kit targets 49 mm bore forks and provides a 49×60×10 mm oil seal size (49 mm inner, 60 mm outer, 10 mm lip). Sold as one leg per kit, this SKF kit is designed to restore fork-fluid sealing performance on compatible Showa forks and is commonly used in front-end overhaul projects.
