These sliding dropout plates are compatible with all Boost spaced Big Bro models. The dropouts convert the spacing of the frame from Boost 148mm to 135mm. This allows a Rohloff Speedhub with 10mm axle and OEM axle plate to be fitted (these dropouts may also provide compatibly with other internally geared hubs).
Version 1: This is for 2024 Big Bros and earlier
Version 2: This is for the new version ‘rail’ dropout on 2025 and newer Big Bros
Please note: neither of these will work with the older non-Boost Big Bro framesets (pre-2021).
- Includes mounting bolts and washers
- ISO Disc brake mount
