Shimano 105 ST-R7120 Hydraulic STI Lever Set With BR-R7170 Flat Mount Caliper

Slim ergonomically designed 105 Dual Control Levers for hydraulic disc brakes offer powerful braking and effortless 12-speed shifting.

The Shimano 105 R7120 Dual Control Levers feature a revised lever position and bracket shape developed using data from a broad study of different hand shapes. That’s combined with the all-condition confidence of hydraulic disc brakes and the quick and intuitive shifting cyclists expect from Shimano 105.

Technology

Dual Control Lever

DCL stands for Dual Control Lever. It has brake and shifting functions in the system and enables easy operation.

Ergonomic innovation is probably more critical to the higher standard performance than the added gearing. The shift internals borrow the robustness from our MTB technology and are so smooth and effortless that one finger shifts front and rear are possible. Indeed, shifting is the ultimate act of Shimano Total Integration, and simply has to be experienced to be understood.

The Dura-Ace / Ultegra / 105 Dual Control Lever have an optimised structure with features that include the lighter weight pivot section in the near side of the shifting unit and the integral shifting cable for lighter steering. Its many component parts are made so compact and precise to achieve unprecedented high-speed performance.

Reach Adjust

Brake lever is equipped with a reach adjust mechanism. The distance from handlebar grip to lever can be adjusted to suit any hand size, type of riding and individual rider preferences.

Ice Technologies

The fade, which can occur to disc brake rotor and pad when braking on a long downhill ride for instance, has a negative impact on the braking performance. Shimano has adopted Ice Technologies disc brake rotor and Ice Technologies pad to realize the cooling technology for consistent performance. The clad disc brake rotor blade, which has a 3 layer-sandwich structure of stainless steel, aluminum and stainless steel, provides better radiation performance. Also, the radiation fin has been adopted for the pad. Moreover, the clad disc brake rotor blade and the radiator fin provide long pad life, less noise, less fade and lightweight.

Ice Technologies piston in order to achieve optimized lightweight, high rigidity and heat dissipation. Oversized pistons transfer hydraulic power directly to the brake pad, and ceramic material is used to avoid heat transfer for constant stable braking, providing efficient stopping power transfer without loss.

One Way Bleeding

“One Way Bleeding” was developed for quick and easy prevention of air in our hydraulic system. We have streamlined the oil route throughout the system to prevent air bubbles from being captured in the system.

One way oil routing plus a funnel tool with mineral oil provides an easy and clean bleeding system.

Features

• Ergonomic short shift arc follows natural hand movement with inward shift stroke distance reduced for rapid and precise gear changes
• Hydraulic brake lever provides powerful, controllable and consistent stopping power with less effort especially from the hood position
• Hydraulic reservoir tank provides pad to rotor clearance auto-adjust maintaining braking performance during pad wear
• Kit includes ST-R7120 STI, BR-R7170 flat mount brake callipers with pads, hoses, and mineral oil (without rotors or adapters)
• Tuneable reach adjusters enable custom fitment for hands
• Comes complete with Optislick coated cables and silicon greased outer casing to further reduce shift friction and increase service life
• Easy bleed and clean hydraulic system, for use with Shimano mineral oil only