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Shimano Integrates Hydraulic Disc Brakes with Mechanical Dura Ace

Sales & Trends

NUNSPEET, the Netherlands – Following the introduction of the hydraulic disc brakes with Di2 last years, Shimano recently unveiled a hydraulic disc brake lever which is compatible with Shimano’s mechanical Dura-Ace, Ultegra and 105.

Shimano Integrates Hydraulic Disc Brakes with Mechanical Dura Ace
Shimano recently unveiled a hydraulic disc brake lever which is compatible with Shimano’s mechanical Dura-Ace, Ultegra and 105. – Photo Shimano

Just like the Di2 levers, the new mechanical ST-RS685 has a compact design. Shimano’s engineers managed to include a mineral oil reservoir and brake system all in the ergonomic lever. Hydraulic disc brakes maintain high consistent braking performance in all conditions through heat management and brake power that can be tuned to riding conditions, terrain, riders’ size and abilities.

Reach adjustment

Shimano claims more stopping power with less effort. The lever features a 10 millimetre reach adjustment to customize the control for people with smaller or larger hands. The brake calliper that Shimano introduced last year (BR-R785) has been updated and replaced by a new brake calliper (BR-RS785). This brake calliper has an improved cable routing. Instead from the lever to the outside of the calliper, the cable runs now to the inside of the calliper.

Shimano equipped its hydraulic disc brakes with Ice technology, a cooling technology for consistent performance. The clad rotor blade, which has a 3 layer-sandwich structure of stainless steel and aluminium, provides a better radiation performance that reduces the temperature approximately 100 degrees. The FREEZA SM-RT99 rotor comes in two sizes: 140mm as a standard and 160mm as an option for people who require more brake power.

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