MRP 1x V3 E-MTB Chainguide - 34-38T, Bosch CXThe MRP 1x V3 Alloy E MTB Chainguide is perfect for E MTB cross country riders and racers wishing for more security out of their "narrow wide" setups. Lightweight chain retention Mounting hardware included and install possible with just a single 4mm HEX wrench. Tracked and grooved upper guide and backplate increases stiffness Co molded "HD2" upper guide with softer durometer interior for silent guidance Product Specifics Chainguide Mount Type: Bosch