Milwaukee Twins Fork Boots For Showa Forks For Harley FX XL The Milwaukee Twins Fork Boots are engineered for 35mm Showa forks, offering an exact fit.. These replacements for old or damaged rubber boots are constructed with high-quality, factory-style materials ensuring durability and a refreshed appearance. Formerly offered under the J&P Cycles brand. Features: Replace your worn-out or weather checked original rubber boots Stock replacement for 35mm Showa forks made from 1975-87 Replaces OEM 45404-75 T