TRANSMISSION | SHIMANO | GRX-RX600 | 1x11

Shimano GRX BL/ST-RX600+BR-RX400 drivetrain + GRX RD-RX812 rear derailleur

Features

The Shimano GRX BL/ST-RX600+BR-RX400 1x11-speed disc brake kit is designed to meet the specific needs of gravel riders. It consists of Shimano GRX 1x11 BL/ST-RX600 levers and BR-RX400 Flat-Mount calipers for hydraulic disc brakes. These components provide excellent stopping power, essential for maintaining control on steep and demanding descents.

The kit also features a taller 18mm brake lever pivot axle, a curved lever shape, and anti-slip textures on the contact surfaces for optimal grip. It is complemented by the RX800 and RX600 STI 1x11-way for the left without shifting or DSP functionality, including the 1x11 Di2 version (ST-RX815).

The GRX brake calipers have a design reminiscent of SHIMANO Flat Mount models from the road bike sector and offer equally high braking performance. They also feature well-established features such as One-Way Bleeding and the ICE-TECHNOLOGIES heat management system with finned brake pads and rotors for maximum resistance to fade.

Benefits

The Shimano GRX BL/ST-RX600+BR-RX400 1x11-speed disc brake kit offers superior reliability and braking performance, essential for gravel riders. Its specific design ensures optimal grip, even on the roughest terrain.

The ICE-TECHNOLOGIES heat management system ensures maximum resistance to fading, extending the life of brake pads and discs. In addition, the RD-RX812 1x11-speed rear derailleur offers quiet, smooth, precise, and reliable shifting, even on the most demanding terrain.

Benefits

With the Shimano GRX BL/ST-RX600+BR-RX400 1x11-speed disc brake kit, you'll enjoy unmatched braking performance whether you're riding gravel, road, or cyclocross. Its robust design and innovative features give you optimal grip and maximum fade resistance, for a safer, more controlled riding experience.

Additionally, thanks to SHADOW RD+ technology, the rear derailleur guarantees uninterrupted shifting performance, avoiding chain shock and unnecessary movement of the rear derailleur cage.

Features of the GRX BL/ST-RX600 1x11-speed + BR-RX400 Disc Brake Set

• Excellent heat dissipation
• Easy wheel replacement
• Easy and clean purge system
• Easy installation and maintenance
• Gravel-inspired lever and bracket ergonomics
• Anti-slip brake lever
• Better control of mixed terrain
• Same light shifting operation as high-end systems

Features of the GRX RD-RX812 1x11 Speed ​​Rear Derailleur

• Adjustable chain stabilizer prevents chain slap and drop
• ON/OFF stabilization switch to adapt to the terrain
• Clutch tension suitable for gravel
• Quiet, uninterrupted rear derailment on rough terrain
• Smooth and reliable gear shifting on mixed surfaces
• Compatible with the current DUAL CONTROL LEVER for road use

Product Features

• Use : Gravel, Road, Cyclocross
• Band : GRX
• Model : RX600/RX400
• Kind : Dual-Control (STI) right
• Mounting on the handlebar: left/right
• Forward speed: 1 speed
• Reverse speed: 11 speeds
• Optical speed display: No
• Lever reach adjustment: Yes, with tool
• Handlebar diameter: 23.8mm/24.2mm
• Brake type: Hydraulic disc brake
• Brake caliper: BR-RX400
• Brake assembly: Flat mounting
• Brake pads: L03A resin with fin
• Brake hose: SM-BH90-JK-SSR front 100mm / rear 1700mm (can be shortened)
• One-way purge: Yes
• Brake fluid: Mineral oil
• Recommended brake rotor: SM-RT64, SM-RT70, SM-RT800

• Model : RD-RX812
• Mounting type: Direct mounting
• Forward speed: 1 speed
• Reverse speed: 11 speeds
• Compatible channel: HG-EV 11-speed, HG-X11
• Max. teeth large sprocket: 42 T
• Minimum teeth of the large pinion: 40 T
• Max. teeth small sprocket: 11 T
• Minimum teeth for small pinion: 11 T
• Total capacity: 31 T

Material

• Lever : Aluminum, painted
• Yoke : Aluminum, painted
• Derailleur: Aluminum
• Derailleur : GFRP

Color

• Black

Weight

• STI Dual Control: about 311 g
• Brake lever: about 227g
• Yoke : by about 143g
• Derailleur : 264g (manufacturer's information)