DIY alignment tool for Simplex Derailleur Hanger - Bike Forums
Make A Derailleur Hanger Alignment Tool - MtnBikeRiders.com
Julien Morand on X: "DIY rear derailleur hanger alignment tool. Cost only $2.17. instructional video available here: https://t.co/Wg1bAZPQls. #gcnhack https://t.co/SnH3MIG354" / X