Shimano Ultegra Di2 ST-R8170/BR-R8170 HR Schalt-/Bremshebel

The ULTEGRA group is equipped with the ST-R8170/BR-R8170 model, which is suitable for road use. The group includes a brake lever (ST-R8170), a brake caliper (BR-R8170) and a brake line (SM-BH90-JK-SSR). The recommended rotor is RT-MT800. The system is equipped with a SERVO-WAVE function, which allows adjustable empty travel and grip width adjustment with tool integration. The system does not include an open clamp. The materials for the lever, bracket and caliper are aluminum and carbon fiber reinforced plastic. The brake system has two pistons.