Lightweight Schrader Presta Rim Kit

A two-piece rim-based valve conversion system designed specifically for UK cyclists needing reliable Schrader-to-Presta compatibility. Each adapter is 12 mm tall with an 18 mm outer diameter and weighs only 3.5 g — contributing negligible rotational mass. Made from reinforced engineering-grade plastic, it withstands repeated compression cycles without deformation. The open architecture supports seamless integration with Presta inner tubes and standard UK cycling accessories. Install by pressing firmly into the rim’s valve aperture; no adhesive, tools or rim modification required. Verified fit on rims with 8.5–9.0 mm valve hole diameters — typical of most post-2015 aluminium road and hybrid rims sold in Europe.