Shimano 105 BR-R7170 + ST-R7120 Disc Brake

Shimano 105 road bike disc brake with BR-R7170 brake caliper and mechanical-hydraulic ST-R7120 shift/brake lever

The Shimano 105 disc brake combines the BR-R7170 hydraulic brake caliper with the ST-R7120 shift/brake lever for mechanical 2x or 12-speed shifting on road bikes. The flat-mount brake caliper has 10% more brake pad clearance than previous models, minimising the likelihood of grinding noise and resulting in quieter braking. The powerful, excellently controllable braking power ensures reliable deceleration and brings you to a safe stop in all conditions. You also benefit from the user-friendly bleeding process, also known as One-Way Bleeding. With its design, the two-piece aluminium brake caliper blends in perfectly with the overall appearance of your bike. By the way, it does not weigh more than the comparable Ultegra model.
The ST-R7120 shift/brake lever impresses with its smooth shifting and strong braking performance. Its revised ergonomic design provides excellent grip comfort and accommodates different hand sizes. The distance between the handlebars and the lever has been reduced, which increases brake control and makes shifting easier. The reach of the lever can also be adjusted with the help of a hex key. ST-R7120 combines a plastic lever body with a brake lever made of lightweight aluminium and therefore weighs only about 200 grams more per pair than its electronic counterpart. A corrosion-resistant cable with Optislick coating and sufficient cable housing are included. In addition, the disc brake comes with brake hoses and organic brake pads that contribute to improved heat dissipation thanks to their Ice-Tech cooling fins.

Specifications:

Series:

105 R7100

Application:

Road

Gearing:

2x, 12-speed

Shifting System:

mechanical

Type:

hydraulic, 2 pistons

Actuation:

mineral oil

Hose:

SM-BH90-JK-SSR

Hose Length (Front/Rear):

1000 mm / 1700 mm

Technical Information - Shift/Brake Lever:

Brake Lever Material:

aluminium

Lever Body Material:

composite

Clamp Material:

steel

Mount:

clamp (closed)

Reach Adjust:

bolt

Adjustment Options:

Reach Adjust

Technical Information - Caliper:

Mount:

flat mount

Pads:

resin with cooling fins

Design:

2-piece

Calliper Material:

aluminium

Piston Material:

resin

Hose Connection:

straight

Compatibility:

Shift/Brake Lever:

Mounting Position:

left for front brake caliper, right for rear brake caliper

Clamp Diameter:

23.8 - 24.2 mm

Front Derailleur:

FD-R7100, FD-RX820

Crank:

FC-R7100, FC-R9200, FC-R9200-P, FC-R8100, FC-R8100-P, FC-RS520, FC-RX820-2, FC-RX610-2

Rear Derailleur:

RD-R7100, RD-RX820

Cassette:

CS-R7101-12, CS-HG710-12, CS-R8101-12

Chain:

CN-M7100, CN-M8100, CN-M9100, CN-M6100

Additional Brake Lever:

BL-RX812

Brake Caliper:

Brake Rotor:

140 mm, 160 mm, 180 mm (recommended: SM-RT70, SM-RT64)

Pads:

organic and sintered; with narrow pad shape; standard and Ice Tech brake pads

Features:

Shift/Brake Lever:

• mechanical-hydraulic shift/brake lever (2x or 12-speed) for road bike use
• revised lever design for more control with different riding styles
• smooth gear changes and excellent braking performance with optimised ergonomics
• lever position and lever body design take into account different hand shapes
• wing-like shape for a shorter lever access curve: better accessibility
• reach adjustment (13.3 mm) with 2.5 mm hex tool
• Optislick inner cable with a minimal galvanic coating for more efficient cable routing and corrosion resistance
• only 612 grams per pair
• funnel venting with M7 funnel
• lacquered brake lever

Brake Caliper:

• 10% larger brake pad spacing minimises grinding of the brake rotor, less noise development
• coherent appearance and easy tool access thanks to flat mount
• optimised heat dissipation with Ice-Tech
• simple bleeding process
• just as light as the Ultegra model (123 grams)
• 2 pistons made of synthetic resin
• painted
• steel bolts (4 mm)

Technology:

STI Dual Control
Shimano Total Integration (STI) means the combination of braking and shifting functions in one lever, which increases safety when riding. By refining the technology, it became possible to make shifting so smooth at the front and rear that they can be triggered with just one finger. Shimano calls such levers Dual Control Levers (DCL).

One-Way-Bleeding
One Way Bleeding is a technique used on Shimano calipers that facilitates brake bleeding. The hose routing has been optimised so that no air bubbles remain in the brake calliper. In combination with the funnel, the brake can be bled cleanly and easily.

Manufacturer Numbers:

Front:

IR71202DLF6SC100A

Rear:

IR71202DRRDSC170A

Contents:

• 1 x Shimano 105 BR-R7170 + 105 ST-R7120 disc brake, front or rear
• 1 x Shimano SM-BH90-JK-SSR brake hose, 1000 mm (front) or SM-BH90-JK-SSR 1700 mm (rear)
• 1 x pair Shimano resin brake pads with cooling fins
• 1 x disc brake adapter for front 140/160 + 160/180 mm (only for front)
• 1 x hose connection sets
• 2 x type A caliper bolts (front)
• 2 x caliper bolts for 25 mm frame diameters (rear)
• 1 x shifter cable
• 1 x cable housing (front) or 2 x cable housing (rear)
• ready for installation, filled, bleeding is recommended after installation

Order Together:

• TL-BH61 tool for insert installation

Optional accessories:

• FM to FM SM-MA-R160 D/D brake adapter for 160 mm brake rotors on 140 mm FM frames for rear wheel
• FM to FM SM-MA-R160 D/D brake adapter for 180 mm brake rotors on 160 mm FM frames for rear wheel
• K05S-RX Resin Pads
• L04C-MF Metal Pads w/ Cooling Fins
• Type C bolts for 10/15/20/30/35 mm frame diameter
• Type C2 bolts for 10/15/20/30/35 mm frame diameter