Upgrade your mountain biking or hybrid bicycle with the microSHIFT Acolyte RD-M5185M-B SpringLock Rear Derailleur - the perfect blend of innovative technology, reliable performance, and sleek design. Engineered for 8-speed drivetrains, this medium cage derailleur is built to deliver smooth, precise shifting and exceptional chain retention on challenging terrain and everyday riding. Materials & Construction Constructed from , durable materials, the microSHIFT Acolyte rear derailleur features a robust black finish that resists corrosion and wear. Its upgraded cage design enhances chain wrap and retention, ensuring your chain stays securely in place even over rough trails or bumpy city streets. The medium cage length accommodates 12-42t and 12-46t cassette range, making it versatile for various riding styles. Performance & Engineering At the core of this derailleur is the patented SpringLock system, which combines a customized linear rate high tension spring with a dual-stage activation mechanism. This innovative approach provides excellent chain security, preventing chain drops during aggressive ascents or descents. The SpringLock clutch can be easily engaged by turning the engagement bolt clockwise until it clicks, and disengaged by flipping the switch - allowing quick, tool-free wheel removal and maintenance. Components & Technology Featuring direct path cable routing, the microSHIFT Acolyte RD-M5185M-B ensures smooth, responsive shifting with minimal effort. Compatibility is streamlined with the dedicated Acolyte shifters, forming a perfect match for reliable 8-speed performance. The derailleur's design supports a chain wrap capacity of up to 37 teeth and fits on a standard 10x1 mount, making it compatible across various bikes. Style & Use Case Designed with a sleek black finish, the derailleur complements any bike aesthetic-from rugged mountain bikes to versatile hybrid bicycles. Its durable construction and advanced chain retention system make it ide