microSHIFT Acolyte RD-M5185M-B SpringLock Rear Derailleur – 8 Speed Medium Cage Black SpringLock Chain Retention. The heart of this microSHIFT Acolyte derailleur is the innovative SpringLock system. By pairing a customized linear rate high tension spring and a dual stage activation mechanism weve developed a system that can provide substantial chain security when you need it and can be turned off when you dont. To engage the clutch turn the engagement bolt clockwise until it clicks. Theres no way to overtighten the bolt. To disengage the clutch for wheel removal flip the switch. Its that simple.

Innovative SpringLock chain retention keeps chain in place over rough terrain

Direct path cable routing for smooth and responsive shifting

Compatible with 12-42t and 12-46t 8-speed cassettes

Compatible with Acolyte shifters only

• TECH SPECS

Largest Cog 46Rear Der/Shifter Compatibility microSHIFT AcolyteRear Derailleur Mount Type 10×1 StandardDrivetrain Speeds 8Chain Wrap Capacity (teeth) 37Cage Length MediumColor Black