Derailleurs

These easily transform bar-end (aka barcon or TT) shifters into thumb shifters.The Microshift shifters are not included, but are readily available in 8 through 12-speed, Shimano and SRAM versions, and many have an option for friction-shifting. These mounts are also compatible with the Microshift Alfine/Nexus 8-speed shifter (part #BS-N08). Be sure you are using the MTB Microshift (or Gevenalle) model, as the Road version is smaller and will not fit properly.

The clamp is raised up to give clearance for hydraulic brake levers. They have a shifter mounting boss that fits MICROSHIFT and Gevenalle mountain shifters.

These easily transform bar-end (aka barcon or TT) shifters into thumb shifters. The shifters are not included, but are readily available in 8 through 11-speed versions, and many have an option for friction-shifting. These will work on any indexed Shimano bar-end shifter going all the way back to 6 speed!

They have a shifter mounting boss that fits Shimano bar end shifters and most Shimano downtube shifters, so long as they mount to a flat, not curved, shifter boss.