Shimano Ultegra ST-R8170 + BR-R8120 Disc brake set

Shimano Ultegra ST-R8170 + BR-R8120 Disc brake set
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From 339,- 160,- discount
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Pros & Cons

Pros & Cons

  • Great shifting performance, high shift speed and smooth shifting while out of the saddle.
  • Semi-wireless: there is still a cable connection between the battery, front and rear derailleur. Easier mounting and little chance of cable breakage.
  • You can bleed the brakes without unscrewing the caliper from the frame. Very handy!
  • With Di2 electronic shifting, you must adjust the derailleurs once and they will adjust themselves automatically in the future.
  • 10% more space between the pistons, reducing the risk of rotor rubbing.
  • 80 grams heavier compared to the Dura Ace R9270 disc brake set.

Specifications

Specifications

Brand
Shimano
Diameter Disc Brake Rotor
140 mm / 160 mm
Brake Mount
Flat Mount
What groupset do you have?
Shimano Ultegra
Number of gears
12 speed
Type
Set
Type of Brake
Hydraulic
Gear Shift Type
Electronic
Suitable for
Shimano Dura Ace Di2 R9200 / Shimano Ultegra Di2 R8100
All specifications

Description

Description

The Shimano Ultegra ST-R8170 + BR-R8120 disc brake set consists of a Shimano R8170 2x12 speed shifter with Shimano Ultegra R8120 hydraulic brake caliper with bled hydraulic hose. This is also available as either a front or rear set.

Shifters
The ergonomics of the Shimano Ultegra R8100 shifters have been optimised and are similar to the Dura Ace R9200 Disc Di2 groupset. The ergonomics of the Shimano Ultegra R8100 shifters are comfortable in the hand. You have better control and can comfortably adopt multiple positions. The shifters each feature a button-cell battery that maintain the connection to the front and rear derailleurs. These have a battery life of around 1.5 years of use.

Disc brakes
The disc brakes have also been taken in hand. The Ultegra caliper consists of 2 parts and is CNC milled. Just like the Dura Ace calipers, there is 10% more space between the pads and the rotors. This has ensured that the brakes have little to no touching when you are not braking. Nothing is more annoying than rotors rubbing on during a climb or in a sprint. Braking power and metering are also noticeably improved.

Technology

Servowave
The brakes use Shimano's Servo Wave Action. This technology means that the speed at which the pistons go in becomes slower as the pistons get closer to the disc. This preserves the engagement torque that Shimano brakes are known for, but greatly improves brake metering.

Shimano DI2 app
All adjustment options such as assigning shift buttons, automatic shifting or adjusting shifting speed can be done via the Shimano DI2 app. The function of the shift buttons are individually configurable. The synchronised shift or semi-synchronised shift in which the front derailleur automatically shifts with it for the ideal chainline is also an option.

Delivery includes

1x Shimano Ultegra ST-R8170 + BR-R8120 including brake pads
1x Shimano Hydraulic disc brake cable filled with mineral oil
2x Disc brake bolts for caliper mounting
1x Brake pad spreader
1x Piston spreader
1x Insert pin
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Shimano Ultegra ST-R8170 + BR-R8120 SRAM Force AXS D2 Shimano Dura Ace R9270 Disc Di2 SRAM Red AXS
0 reviews 0 reviews 0 reviews 0 reviews
Diameter Disc Brake Rotor 140 mm / 160 mm
Brake Mount Flat Mount Flat Mount Flat Mount Flat Mount
What groupset do you have? Shimano Ultegra SRAM Force Shimano Dura-Ace SRAM Red
Number of gears 12 speed 12 speed 12 speed 12 speed
Type Set Left / Right / Set Left / Right / Set
Type of Brake Hydraulic Hydraulic Hydraulic Hydraulic
From 339,- From 299,- From 529,- From 499,-
This product View product View product View product

All specifications

General

Brand
Shimano
Diameter Disc Brake Rotor
140 mm / 160 mm
Brake Mount
Flat Mount
What groupset do you have?
Shimano Ultegra
Number of gears
12 speed
Type
Set
Type of Brake
Hydraulic
Gear Shift Type
Electronic
Suitable for
Shimano Dura Ace Di2 R9200 / Shimano Ultegra Di2 R8100
Lever Material
Carbon Composite
Shifter Hood Material
Silicon (Vari-Cushion)
Adjustable lever
Yes
Compatible with
Disc brakes
Colour
Black

Sizes

Length
1000 mm / 1700 mm