Shimano BR-RS305 Mechanical Disc Brake Caliper - Flat Mount - rear
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Product description
The Shimano BR‑RS305 mechanical disc brake caliper is a rear‑mounted, flat‑mount unit designed for road bikes. It features an aluminium body, organic/resin L02A brake pads with Ice‑Tech cooling fins, and a 160 mm rotor compatibility. Weighing 170 g, it pairs with Shimano brake levers and discs.
The Shimano BR‑RS305 rear mechanical disc brake caliper offers a flat‑mount design that integrates cleanly with road bike frames, eliminating external mounting bolts for a streamlined appearance. Constructed from aluminium, the caliper weighs 170 g and is compatible with 160 mm rotors. It uses organic/resin L02A brake pads, equipped with Ice‑Tech cooling fins to maintain consistent performance in both dry and wet conditions. The unit is intended for use with Shimano brake levers such as the ST‑3500 (lever not included) and works with Shimano disc models SM‑RT54 and SM‑RT81. The flat‑mount system supports frames with a 25 mm diameter, and the caliper includes the necessary steel mounting bolts. This 2026 model, identified by the code EBRRS305RDRF, is suited for road bike applications, providing reliable mechanical actuation and easy installation.
- Flat‑mount design for a sleek, aerodynamic profile
- Aluminium construction weighing 170 g
- Organic/resin L02A brake pads with Ice‑Tech cooling fins
- Compatible with 160 mm rotors
- Designed for road bike rear applications
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