Shimano Rapidfire Plus shifters move an Altus front derailleur and Shadow rear derailleur around a 9-speed cassette with 11-36T from SunRace. The whole system is tuned to work on a 2x9 setup.

Long before UDH became a well-known acronym and widely-adopted standard, our first Patent Patrol sneak peek at SRAM’s direct mount T-type derailleurs illustrated a clearly mechanical Transmission. Now ...