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BOX Two Brake Post Extenders

BOX Two Brake Post Extenders
Color: Black
Please select options Unavailable


Box Two™ Brake Post Extenders are the perfect solution for those riders needing 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. They 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 (see Technical).

- Cantilever brake boss compatible
- 16 mm of brake arm positioning
- 6061-T6 aluminum
- Thread M10 x 1.25

- Material: 6061-T6 Aluminum
- Thread: M10 x 1.25
- Weight: 32 grams / 1.1 ounces

Part Numbers

Option UPC MPN
Black 616043827612 BX-BK17EXTEN-BK