Looks like a small section at the BB for tyre/crank clearance and then the flat mount brake section built into the NDS dropout
@snottyotter started
London Fixed Gear and Single-Speed is a community of predominantly fixed gear and single-speed cyclists in and around London, UK.
This site is supported almost exclusively by donations. Please consider donating a small amount regularly.
Looks like a small section at the BB for tyre/crank clearance and then the flat mount brake section built into the NDS dropout