Shimano Ultegra ST-R8170 + BR-R8170
From 339,-
Shimano Ultegra ST-R8170 + BR-R8170
Shimano GRX RX820
320,-
Shimano GRX RX820

Shimano Ultegra ST-R8170 + BR-R8170 vs. Shimano GRX RX820

Shimano Ultegra ST-R8170 + BR-R8170
Shimano GRX RX820
Shimano Ultegra ST-R8170 + BR-R8170

From 339,-

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Shimano GRX RX820

320,-

View product

This is what our customers think

Reviews
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Pros
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Cons
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According to the product specialist

Pros
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.
Ergonomically shaped, braking and shifting are very precise and direct.
Good dosage and have sufficient clearance to prevent brake disc seizures.
The shift levers are shaped to reduce pressure on the palms, which benefits ergonomics and therefore comfort.
Cons
80 grams heavier compared to the Dura Ace R9270 disc brake set.
The 1x12 set-up does not allow for 2 blades up front.

Specifications

Brake Type
Disc Flat Mount
Number of gears
12 speed
12 speed
Shifting Type
Mechanical
Gear Shift Type
Electronic
Crankset (Axle) Type
Hollowtech II
Suitable for
Shimano Ultegra Di2 R8100
Shimano Dura Ace Di2 R9200
Length
1000 mm
1700 mm
1000 mm
1700 mm
Composition
Set
Front brake
Rear brake
Lever Material
Carbon Composite
Shifter Hood Material
Silicon (Vari-Cushion)
Adjustable lever
Yes
Compatible with
Disc brakes
Colour
Black
Black
Type
Set
Left
Right
Set
Type of Brake
Hydraulic
Hydraulic
Diameter Disc Brake Rotor
140 mm
160 mm
Brake Mount
Flat Mount
Crankset Type
Single
What groupset do you have?
Shimano Ultegra
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