this could perhaps work: https://www.candncycles.co.uk/product/2856/trek-trek-hidden-fender-mount-kit/option/
I recommend that style in steel over something like these.
The alloy ones have a tendency to snap. Had mine go on km 48 of a 2000km audax...
a 2000km audax
A what now?
@motoko 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.
this could perhaps work: https://www.candncycles.co.uk/product/2856/trek-trek-hidden-fender-mount-kit/option/