Shimano Ultegra BR-RS811-R Road Caliper Brake - Rear Under Bottom Bracket Direct Mount BLK Model=Boyd Sprocket A truly all terrain tire

A truly all terrain tire designed for grip on snow hard pack loose dirt or grass via its well spaced large square knobs

Thanks to the use of special steel and processes with minimum tolerances these cassettes have been designed to be durable and resistant

Model Ratchet Hybrid Description MS 12sp Steel FH Body w/12x142/148/157mm End Cap

5/3/4/5/6/8/10mm keys and holder

ultimate suppleness and comfort

Shimano Ultegra BR-RS811-R Road Caliper Brake - Rear Under Bottom Bracket Direct Mount BLK Model=Boyd Sprocket A truly all terrain tireThe Shimano BR RS811 R under bottom bracket mount road brake caliper provides an exceptional balance of rigidity weight and stopping power. Features a sleek and integrated low profile design that is compatible with 20. 8 28mm wide rims and up to 28C sized tires. Exceptional balance of rigidity weight and stopping power Sleek and integrated low profile caliper design Compatible with 20. 8 28mm wide rims and up to 28C sized tires Includes R55C4