PF30 and BB30:

perfect for outdoor and sportive activities

and valuables

Built specifically to handle heavy e-bikes

chain rings

Microshift Acolyte 8 Speed Clutched Rear Derailleur - Short Cage - With Clutch - 8 Speed PDP|PLP|Brake Rotor Type PF30 and BB30:Acolyte 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