Shimano Ultegra Disc Brake BR-R8170 + ST-R8170 2-/12-speed - OEM

OEM Packaging:

This item comes from the original equipment manufacturer and is lacking the retail packaging.

Information regarding the return of batteries and electrical equipment:

You can find information about the return and disposal of used batteries, accumulators, and electrical equipment here.

Specifications:

Series:

Ultegra R8100

Application:

Road

Gearing:

2x, 12-speed

Shifting System:

electronic, semi-wireless

Type:

hydraulic, 2-piston

Actuation:

mineral oil

Hose:

SM-BH90-JK-SSR

Hose Length (Front/Rear):

1000 mm / 1700 mm

Technical Data Shift-/Brake Lever:

Brake Lever Material:

aluminium

Lever Body Material:

carbon (CFRP)

Mount:

clamp (closed)

Reach Adjust:

bolt

Adjustment Options:

reach adjust, contact point

Technical Information – Caliper:

Mount:

flat mount

Pads:

resin with cooling fins

Design:

2-piece

Caliper Material:

aluminium

Piston Material:

resin

Hose Connection:

straight

Compatibility:

Shift-/Brake Lever:

Mounting Position:

left for front caliper, right for rear caliper

Clamp Diameter:

23.8 - 24.2 mm

Power Cable:

EW-SD300-I (1 x connection)

Rear Derailleur:

RD-R8150, RD-R9250, RD-R7150

Front Derailleur:

FD-R8150, FD-R9250, FD-R7150

Crank:

FC-R8100, FC-R8100-P, FC-R9200, FC-R9200-P, FC-R7100, FC-RS520

Cassette:

CS-R8100-12, CS-R8101-12, CS-R9200-12, CS-R7100-12, CS-R7101-12, CS-HG710-12

Chain:

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

Additional Brake Lever:

BL-RX812

Satellite Shifter:

SW-RS801-S, SW-RS801-T, SW-RS801-E (1 x connection via EW-SD300)

Brake Caliper:

Brake Rotor:

140 mm, 160 mm, 180 mm (recommended: RT-MT800)

Pads:

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

Features:

Shift-/Brake Lever:

• Tidy cockpit, aesthetic look thanks to wireless connection
• Wireless shifting, precise and fast (rear derailleur / front derailleur with cabling)
• Battery CR1632 easy to replace with flat head screwdriver, 1.5 to 2 years runtime
• Unique ergonomics thanks to feedback from professional riders
• Softer handle cover
• Servo Wave technology for optimal brake control
• 16.4 mm reach adjust
• Wired mounting also possible
• Funnel venting with M7 funnel
• Firmware updates via E-Tube Project
• Connection with Shimano Connected partner devices from Garmin or Wahoo possible via E-Tube
• Lacquered brake lever and buttons

Brake Caliper:

• 10% larger brake pad spacing minimises grinding of the brake rotor, less noise development
• Braking performance optimally tuned for racing and training use
• Coherent look and easier tool access thanks to flat mount
• Optimised heat dissipation with Ice-Tech
• Simple bleeding process
• 2 pistons made of synthetic resin
• Painted
• Mounting screws made of steel (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).

Digital Integrated Intelligence (Di2)
Di2 systems are the electronic shifting systems from Shimano. They are based on the SEIS, the Shimano Electronic Intelligent System, which takes over the index shifting function from the mechanical components, only via electrical cables or wireless signals instead of a Bowden cable. Shifting is done by simply pressing a button. The advantage is that no great effort is required, your concentration on the ride is not disturbed, and the operation is also easy with cold hands. In addition, the electronic gear changes are very fast and highly precise. There is also no risk of a defective circuit due to dirty cables or other problems. Through the E-Tube platform, the so-called E-Tube Project, you can make individual settings, such as adjusting the shifting speed, the number of shifts per button press, or the Synchro or Semi-Synchro shifting function. Shimano offers an app for this purpose. Gear maintenance and firmware updates are also done via E-Tube, with the bike connected to a PC running the appropriate E-Tube software for more extensive workshop work.

Semi-wireless
The Shimano Di2 12-speed road bike groups in the disc brake variant work semi-wirelessly: At the crucial point, namely the interaction between STIs and the rear derailleur, the cable is omitted, which ensures a tidy cockpit and significantly simplifies assembly. The wireless protocol is extremely fast and reliable, so that the shifting speed reaches a new level - with consistently high precision. Attention was also paid to keeping power consumption as low as possible. Cables are only used between the battery and the rear derailleur and between the battery and the front derailleur. These are thinner than the previous models and easier to lay. Shimano relies on a central battery located in the seatpost. This increases safety and ensures an uncomplicated charging process via the rear derailleur. Once fully charged, the shifting system can be used for about 1000 km. The components are paired together via the E-Tube platform.

Servo Wave
Shimano Servo Wave technology optimises the travel of your brake levers. During the braking process, the brake pads are guided quickly to the brake rotor with very short lever travel. The greater part of the lever travel is reserved for the actual braking force. In this way, you can apply your braking power in a more targeted manner and use it more effectively.

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 caliper. In combination with the funnel, the brake can be bled cleanly and easily.

Manufacturer Numbers:

Front:

KR8170DLF6SX100A

Rear:

KR8170DRRDSX170A

Contents:

• 1 x Shimano Ultegra BR-R8170 + Ultegra Di2 ST-R8170 disc brake, front or rear
• 1 x brake line Shimano SM-BH90-JK-SSR 1000 mm (front) or 1700 mm (rear)
• 1 pair of Shimano brake pads
• 2 x type A caliper bolts (front)
• 2 x caliper bolts for 25 mm frame diameters (only rear)
• Ready to mount, filled, it is recommended to bleed after mounting