The heart of the Acolyte derailleur is our innovative SpringLock system. By pairing a customised linear rate high tension spring and a dual stage activation mechanism, weâve developed a system that can provide substantial chain security when you need it and can be turned off when you donât. To engage the clutch, turn the engagement bolt clockwise until it clicks. Thereâs no way to overtighten the bolt. To disengage the clutch for wheel removal, flip the switch. Itâs that simple.