SHIMANO ULTEGRA BR-R8170 FLAT MOUNT REAR DISC BRAKE CALIPER Finance the Shimano Di2 GRX 2x11-speed

the Shimano Di2 GRX 2x11-speed ST-RX815 STI for hydraulic disc brake is characterized by excellent deceleration performance to maintain control on steep

5 Bar (25-622)

It offers optimum power transmission and maximum speed for the new DEORE system

Specifically designed to remove crank arms from splined Shimano® Octalink® and ISIS Drive™ bottom bracket spindles that do not use a self-extracting system

Upper Tubes: Straight Wall Aluminium

SHIMANO ULTEGRA BR-R8170 FLAT MOUNT REAR DISC BRAKE CALIPER Finance the Shimano Di2 GRX 2x11-speedGreat speed means great responsibility. That's why, faced with the task of making the new ULTEGRA groupset even faster, Shimano decided to take a holistic and 100% performance focused approach. Shimano's new 12 speed road groupset delivers unparalleled control and comfort anytime, anywhere whether you're competing in an amateur race, chasing your personal best, or out for a social ride. That is "Science of Speed". And it's what sets SHIMANO apart from