BOX Two Brake Extenders
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Box Two™ Brake Post Extenders
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 frame’s existing cantilever brake bosses and provide an additional 16 mm of brake arm positioning.
Typically, they are most useful when a rider transitions from one wheel size to the next (i.e. 451 to 406).
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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