Brompton BWR 6 speed / 1 speed / 2 speed rear wheel chain guide disc
(Note: The BWR sprockets / 1 and 2 speed wheels have a 16 spline Shimano style fitting - so will not fit the SRAM / Sachs 6 speed wheel - for that you need the SRAM 6 speed sprocket stack which uses an ISO 3 spline fitting)
Brompton Q part code: QCHGD-BB
Brompton part number: 9024904
We made this video on installing the Brompton 2 and 6 speed rear sprockets
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