Microshift Acolyte 8 Speed Clutched Rear Derailleur - Short Cage - With Clutch - 8 Speed PDP|PLP|Rail Material upper is the smaller

upper is the smaller

Maybe you're a seasoned bike mechanic replacing some worn out keys or just turning spanners for the first time

bitey brake that will control your speed down the rough stuff

loose over hard

FSA Mega EXO

Microshift Acolyte 8 Speed Clutched Rear Derailleur - Short Cage - With Clutch - 8 Speed PDP|PLP|Rail Material upper is the smallerAcolyte SpringLock Rear Derailleur for 18 Speed The heart of the Acolyte derailleur is Microshift's innovative SpringLock system. By pairing a customised linear rate high tension spring and a dual stage activation mechanism, they've developed a system that can provide substantial chain security when you need it and can be turned off when you don't. To engage the clutch, turn the engagement bolt clockwise until it clicks. There's no way to overtighten