Shimano GRX Di2 Disc Brake ST-RX815+BR-RX810 - Workshop Packaging

Upgrade your ride with the cutting-edge Shimano GRX Di2 ST-RX815/BR-RX810 hydraulic 2-piston brake system, designed specifically for gravel, cyclocross, city, and touring enthusiasts. This system features a flat mount caliper mounting and straight hose connection for a sleek, integrated look. The calipers, crafted from durable aluminum, and the pistons made from high-quality ceramic, ensure reliable stopping power and heat dissipation on any terrain. The brake system operates on mineral oil, offering a smooth and consistent braking experience. The design is a 2-piece construction for easy maintenance and adjustment. It comes with a 1700mm hose for the rear brake and a 1000mm hose for the front, accommodating a wide range of bike sizes and setups. Adjustability is key; with options to fine-tune the reach and bite point, riders can customize the brake feel to their preference. The brake lever, made from aluminum, supports a 1-finger operation, providing precise control over your bike's braking power. This system is not just about performance; it also features a carbon grip body and an electronic shift system for a high-end, 11-speed cassette, blending efficiency with luxury. Whether navigating through city streets or tackling rugged cyclocross courses, this hydraulic brake system offers the ultimate in control and versatility.

• High-performance hydraulic 2-piston brake system with electronic shift/brake lever, designed for gravel, cyclocross, city, and touring bikes.
• Features flat mount brake caliper mounting and straight hose connection for a sleek and efficient setup.
• Utilizes mineral oil as the braking medium, ensuring smooth and consistent braking performance.
• Crafted from durable aluminum for the caliper and lever, with ceramic pistons for reduced wear and improved heat dissipation.
• Offers customizable reach and bite point adjustments to fit personal riding preferences and hand sizes.
• Comes with a 1-finger lever length for quick and easy braking, alongside a carbon grip body for lightweight control.

• black/Front wheel/Left (side-specific): IRX815DLF6SC100OE
• black/Rear wheel/Right (side-specific): IRX815DRRDSC170OE

• 1 x Shimano Di2 disc brake ST-RX815/BR-RX810, front or rear


• Pre-bled and ready to install, after mounting a bleeding is recommended

Order directly:

• FM-to-FM brake adapter SM-MA-R160 D/D for 160 mm rotor on 140 mm FM frame (rear)


• FM-to-FM brake adapter SM-MA-R160 D/D for 180 mm rotor on 160 mm FM frame (rear)


• Tool TL-BH61 for insert pin installation

Optional accessories:

• Screws for 10/15/20/30/35 mm frame diameters