shifter xx1 eagle single click trigger 12 speed rear w discrete clamp lunarCreated for the specific demands of E MTB, the XX1 Eagle Single Click shifter is for the dream E build. Designed to help eliminate premature chain wear and chain breaking by limiting the pull lever to a single engagement. With no detail spared, the carbon trigger and trigger cover save weight, while gliding on precise, near frictionless sealed cartridge bearings you simply cannot find a better shifter for E MTB. And with the XX1 Eagle master group