@CXRAndy
decided to take the plunge and get a different back disc brake on a cannondale synapse and maybe using that as the tourer
i am going for TRP spyre but they do 2 different sorts
a flat mount and a post mount - it looks like i want the flat mount but just wondered if you would know
sorry it sound like a stupid question
Hi Lee
Rears are usually flat mount but not always. Take a photo. The best mechanical are the Hydro-combo brakes. The link has a pictures and the first one is post mount. You can use flat mount on post with an adaptor plate https://road.cc/content/review/85499-trp-hyrd-mechanical-interface-hydraulic-disc-brakes