cable actuated hydraulic disc brakes
Brakes: IS mount disc
https://velo-orange.com/pages/disc-brakes-101
https://www.cyclabo.com/topics/oml2vlgtz9/
https://www.rodbikes.com/blog/brake-talk-flat-mount-vs-post-mount-disc-brakes/
GRX brake calipers: 11 and 12 speed
It’s a similar story with the hydraulic disc brake calipers, which appear to be the same BR-RX820 model that Shimano debuted with the GRX Limited groupset, just in a dark anodized finish instead of the bright silver polish. It’s functionally equivalent to earlier models in terms of braking performance, but is supposedly easier to bleed and with a bit more pad clearance to boot.
TRP RRL SR brake levers: https://trpcycling.com/product/rrl-sr/
TRP Hylex: https://trpcycling.com/product/hylex-rs-silver/
TRP Hylex Di2 adapter: https://trpcycling.com/product/hylex-di2-adapter-kit/