Shimano GRX Di2 ST-RX815 - ST-RX810 disc set

The top-of-the-range GRX disc brake set for 11 x 1-speed drivetrains, featuring a right-hand electronic shift-brake lever and a left-hand brake lever without a shift function.

This disc set is not eligible for further discounts

The GRX Di2 STI hydraulic disc shift-brake levers ST R815. Extremely fast and precise with larger shift buttons. Thanks to electronic transmission of shift commands, these are executed without delay. Operation is similar to that of the mechanical STI levers; shifting is done at the touch of a button. The new 11-speed shifters are also equipped with the programmable Multishift function. The GRX Di2 components are the new benchmark in the gravel and cyclocross sectors.

Shimano GRX STI R815 Disc Lever:

With the ST-R815 STI Disc shift-brake lever, Shimano introduces a very compact shift-brake lever for hydraulic disc brakes and the electronic Di2 shifting systems, marking another milestone in the development of hydraulic disc brake systems for road bikes. The GRX Di2 STI levers offer optimal ergonomics thanks to their adjustable grip width. Thanks to electronic transmission of shift commands, these are executed without delay. Operation is similar to that of mechanical STI levers, with shifting at the touch of a button. The new 11-speed shifters are also equipped with the programmable Multishift function. Shimano’s engineers have succeeded in integrating a mineral oil cylinder, including a complete braking system, into these nevertheless very compact mechanical shift-brake levers. The Dual Control shift/brake levers can be optimally adjusted to the rider via a grip width adjustment and are also very well suited to riders with small hands. Shifting is significantly faster with the new shift levers. This is achieved through a 20 per cent shorter cable pull. The grips feature an anti-slip coating for greater control on constantly changing terrain

Shimano BL RX810 Disc Lever:

With the BL-RX810 disc brake lever, Shimano offers a very compact brake lever for hydraulic disc brakes and 11x1 drivetrains. The left lever has no shifting function. Ergonomics specially adapted for gravel use are characterised by a brake lever pivot point raised by 18 mm, a curved lever shape and non-slip textures on the contact surfaces, which ensure optimum grip even on the roughest terrain. These disc brake levers are based on the technology of the Ultegra series, but without the shifting mechanism. Shimano’s engineers have succeeded in integrating a mineral oil cylinder, including the complete braking system, into these disc brake levers, which remain very compact. The brake levers are made of aluminium; this technology guarantees maximum stiffness, durability and a robust design.

Shimano BR RX810 disc brake caliper:

The BR RX810 road bike disc brake caliper is torsionally rigid and approved for brake discs up to 160 mm. Equipped with brake pads featuring external cooling fins, brake heat is reliably dissipated. These brake calipers are compatible with all Shimano disc brake levers

Flat Mount Standard:

The new Flat Mount caliper standard for road bike brakes reduces weight and offers a significantly sleeker look. With the Flat Mount standard, the rear brake caliper sits directly on the chainstay; no adapter is required for mounting the brake caliper. The bolts pass through the chainstay from below directly into the brake caliper. A flat adapter is still required on the fork. The adapter is screwed onto the rear of the fork leg, and the brake sits directly on the adapter.

To operate the Dura Ace Di2 shift levers, the EW-SD50 cable and SM-EW90 junction port for Shimano’s Di2 with Quick Mount battery holder and mounting hardware are also required. The EW-SD50 cable set features connectors for the rear derailleur, front derailleur and battery pack. Additionally, the SM-EW90 cockpit junction port is required for connecting the Dura Ace Di2 STI shifters.

To use the wireless function, the new BT-DN110 battery and the EW-WU111 Bluetooth module are also required.

Shimano GRX Disc STI ST-R815 Di2 Shift/Brake Levers Technical Specifications:

• 11-speed
• Adjustable grip width Aluminium, lever
• Compatible with Ultegra and Dura-Ace 11-speed Di2 rear derailleurs
• Equipped with programmable Multishift function
• Recommended brake calipers: BRR9170, BRR785, BRRS785, BRR8070
• Weight: approx. 600 g

Shimano GRX Disc Brake Lever BL RX810 Technical Specifications:

• Adjustable reach
• Compatible oil: Shimano mineral oil, item no. Y83998010
• Recommended for bleeding: Item No. SMDISCBP
• Recommended brake calipers: BRRX810, BRRX400, BRR8070, BRRS785
• Weight: approx. 555 g

Shimano BR RX810 Flat Mount brake caliper Technical data:

• Aluminium brake caliper, flat mount
• 2-piston system
• Rensin L03A brake pads
• Recommended brake levers: STR8070, STR9120, STRS685, STR785, STR815
• Weight: approx. 260 g
• Flat Mount standard
• Recommended brake hose: SM-BH90-JK-SSR
• Recommended brake discs: Shimano IceTec SMRT800, SMRT900, SMRT86

Contents of Shimano GRX Di2 Discset:

Shimano GRX STI Di2 Disc shift/brake lever STRX815 (right), Shimano GRX disc brake lever BLRX810 (left), Shimano GRX brake calipers BR-RX815, Brake pads L03A, brake hoses SM-BH90-JK-SSR, 100 and 170 cm lengths, screws and small parts for assembly

The brakes are supplied without oil and a bleeding kit. Mineral oil and the bleeding kit (item no. 0431894) are also required for installation

Herstellerinformation: SHIMANO INC., 3-77 Oimatsu-cho, Sakai-ku, Sakai-shi, Osaka 590-8577, Japan, www.shimano.com | EU contact: Shimano Europe BV, High Tech Campus 92, 5656 AG Eindhoven, The Netherlands, www.shimano.com