Box Two Brake Post Extenders are the perfect solution for those riders in need of extra brake pad adjustment without switching frame sizes. CNC-machined from 6061-T6 aluminum Box Two Brake Post Extenders easily mount to any frames existing cantilever brake bosses and provide an additional 16 mm of brake arm positioning. Depending on your application they can be mounted in either one of two positions — above the frame`s v-brake mounts or below

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