Shimano GRX BR-RX810 + Di2 ST-RX815 Disc Brake Set

Item number: 72041

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black-grey/set (front+rear)
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Shimano GRX BR-RX810 + Di2 ST-RX815 Disc Brake Set - black-grey/set (front+rear)
Shimano GRX BR-RX810 + Di2 ST-RX815 Disc Brake Set - black-grey/set (front+rear)
Shimano GRX BR-RX810 + Di2 ST-RX815 Disc Brake Set - black-grey/set (front+rear)
Shimano GRX BR-RX810 + Di2 ST-RX815 Disc Brake Set - black-grey/set (front+rear)
Shimano GRX BR-RX810 + Di2 ST-RX815 Disc Brake Set - black-grey/set (front+rear)
Shimano GRX BR-RX810 + Di2 ST-RX815 Disc Brake Set - black-grey/set (front+rear)
Shimano GRX BR-RX810 + Di2 ST-RX815 Disc Brake Set - black-grey/set (front+rear)
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GRX BR-RX810 + Di2 ST-RX815 Shimano disc brake set - safe braking and electronic shifting

The Shimano GRX BR-RX810 BR + Di2 ST-RX815 disc brake set (front + rear) helps to get more brake control on mixed terrain. The GRX BR-RX810 brake calipers with Ice Technology ensure perfect heat distribution. In addition, there is the simple one-way bleeding and the uncomplicated hose connection system. The design of the brake calipers is flat mount, which has been established in the Road bike sector for several years now.
The Shimano GRX Di2 ST-RX815 electronic shift/brake levers provide more grip and confidence on rough surfaces and descents. Their higher grip humps have a positive effect on hand position when riding Gravel. The ST-RX815's higher placed brake/shift lever axle increases braking power and reduces fatigue on long journeys.

Are you interested in the GRX series? Then come have a look at our Shimano Gravel theme world. You will find many more products there.

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Series: GRX RX810
Application: Gravel, Cyclocross, City & Touring
Gearing: 2-speed, 11-speed
Shifting System: electronic
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: carbon (CFRP)
Mount: clamp (closed)
Reach Adjust: bolt
Adjustment Options: reach adjust, contact point

Technical Information - Caliper:

Mount: flat mount
Pistons: 2
Pads: L03A resin with cooling fins
Design: 2-piece
Caliper Material: aluminium
Hose Connection: straight


- safer on rough surfaces and in descents
- thumb notch increases grip
- anti-slip brake lever
- textured surface and larger humps keep the hand from slipping off
- higher brake lever axle for more brake performance
- faster brake contact thanks to Servo Wave
- programmable gearing
- E-Tube project ensures firmware updates
- multiple input: hold
- number of E-Tube ports: 2
- remote switch
- compatible with 11-speed Road rear derailleurs
- funnel bleeding (with adapter Y-0C698050)
- shift lever made of GFRP, brake lever painted
- for 23.8 - 24.2 mm handlebar diameter
- brake caliper with excellent heat dissipation
- practical tool access, easy wheel change
- simple, clean bleed system
- ceramic piston
- recommended brake rotor: SM-RT800
- painted brake caliper, steel bolts (4 mm)


STI Dual Control (DCL)
DCL stands for Dual Control Lever. It has braking and shift functions and allows easy operation. The improved ergonomics is probably even more important for the high standard than more range. The shift levers bring the stability of Shimano MTB technology and work so precisely and smoothly that it is possible to shift gears both front and rear with just one finger. This is a highlight of Shimano's " Total Integration" (STI). To believe it, you just have to experience it for yourself.

This product uses a technologically innovative, computerised shifting system based on the Di2 concept with the product designation SEIS (Shimano Electronic Intelligent System). The innovative shifting technology of the SEIS continues to be based on the Shimano Index System (SIS), whose outstanding shifting performance has proven itself over many years. The main difference between the systems is that the shifting operation is no longer carried out mechanically but electronically. The shifting process is carried out by simply pressing a button. No effort is required to shift gears, which has significant advantages as the rider always has a firm grip on the handlebars and can concentrate on riding without being distracted by the shifting. The shifting system allows precise and effortless shifting in all situations, even with cold hands or when the rider has fully exerted themselves. In addition, the shifting capacity can no longer be affected by dirty or stretched cables, as the shifting signal is transmitted electronically. The operating keys work in a similar way to mechanical dual-control levers, making it easy to get used to the new system.

E-Tube is a system platform for the Di2 concept (Digital Integrated Intelligence). E-Tube transmits interactive signals and supplies all electronic parts with power via " Plug & Play" connections. E-Tube is resistant to corrosion, expansion and frost and ensures low maintenance. It offers optimal flexibility for your bike. With E-Tube Project you can customise the settings of electronic components and update the firmware via Windows PC, tablet or smartphone. It provides quick and easy access to information on electronic components and provides an instant overview of system status.

Servo Wave
The Servo Wave brake lever takes up a lot of braking distance at the beginning of its movement so that the pads can be guided to the brake rotor with short lever travel. After the brake pads has been applied, the power transmission factor increases rapidly. The greater part of the lever travel is thus still available to increase the braking force and to modulated it more precisely.

One-Way Bleeding is designed to quickly and easily prevent air from entering the hydraulic system. Shimano has optimised the brake fluid flow path throughout the system to prevent air bubbles from being trapped in the system.
One way oil routing plus a funnel tool with mineral oil provides an easy and clean bleeding system.

Fading of the brake during prolonged uninterrupted operation, e.g. downhill, impairs braking performance. Shimano has introduced brake rotors and pads with Ice-Tech technology to create a cooling technology for consistently high braking performance. The brake rotor has a three-layer stainless steel sandwich structure on the outside around an aluminium core. It radiates heat better and reduces surface temperature from 400° C to 300° C, for example. The brake pads also have optional cooling fins. The design of the rotor in combination with the cooling fins results in a longer service life of the pads, less braking noise, less fading and lower weight.

Manufacturer Part Number:

I-RX815DLF6SC100 + I-RX815DRRDSC170


- 2 x Shimano GRX BR-RX810 + GRX Di2 ST-RX815 disc brakes, front & rear
- 1 x Shimano SM-BH90-JK-SSR brake hose, 1000 mm (front)
- 1 x Shimano SM-BH90-JK-SSR brake hose, 1700 mm (rear)
- 2 pair of Shimano L03A brake pads
- 1 x adapter for 140/160 mm rotors (front)
- 2 x hose connecting bolt units
- 2 x type A caliper bolts (front)
- 2 x caliper bolts for 25 mm frame diameters (rear)
- 1 x Shimano TL-EW02 plug tool (rear)
- incl. Shimano TL-BH61 tool
not incl. bolts for 10/15/20/30/35 mm frame diameters
- not incl. rotor
- mount ready, filled, bleeding is recommended


in stock 2 to 7 days up to 10 days Out of stock inform me
  • black-grey/set (front+rear)

Customer Reviews (1)


Customer Reviews (1)


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by Roland B.  on 18.12.2019
verified purchase

Bremskörper wie Ultegra, die aktuellen Bremsbeläge sind spürbar besser als die Vorgänger. Die STI bringen im direkten Vergleich zu den Dura Ace einen deutlichen Performancegewinn im Gelände. Das Bremsen in den Hoods ist spürbar erleichtert, die Bremskraft in der Handhaltung besser zur Wirkung zu bringen. Die Griffe liegen definierter in den Händen, gerade im ruppigen Gelände ein wesentlicher Vorteil gegenüber den hübschen aber eben auch sehr kleinen Hebeln der Rennradgruppen. Für Cyclocross und Gravel aber auch für Tourenrennradfahrer die mehr in den Hoods als in Unterlenkerposition fahren eine absolute Umrüstempfehlung.

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