Description

Shimano RX825-L GRX Brake Lever

1 x GRX BL-RX825-L Brake Lever left for Hydraulic Disc Brake

For your riding freedom: the Gravel GRX BL-RX825-L disc brake lever from Shimano

Advanced Di2 Button Functions – Shifting Versatility Whether utilizing the new BL-RX825-L brake lever or sticking with a pair of GRX ST-RX825 DUAL CONTROL LEVERS, Shimano 1x12-speed GRX delivers a variety of shifting possibilities thanks to Di2’s customizable buttons as well as add-on accessory switches.
Carried over from previous generations, the GRX RX825 DUAL CONTROL LEVERS feature three Di2 buttons – two buttons are located on the shift paddles while a third button is found on the inside of the hood. The RX825 levers also allow for accessory shift buttons, which can be placed on the tops, drops, or aero bars for additional shifting options. Each Di2 button mentioned above can be assigned various functions, including shifting the rear derailleur, controlling compatible lights and cycle computers, or it can be used as a remote function button for the rear derailleur. With this last option, riders can make shifting trim adjustments on the fly without taking their hands off the handlebars.

SHIMANO marks its debut in the fully wireless drop bar segment with the new 1x12-speed GRX Di2 gravel-specific components. Leveraging the wireless cockpit introduced with SHIMANO’s 2x12 speed road and gravel groups and incorporating the completely wireless technology debuted on the M9200- series XTR rear derailleur, GRX RX827 features a fully wireless drivetrain designed for performance, durability, and versatility. With RX827, the GRX lineup now includes a comprehensive range of mechanical and electronic shifting options in both 1x12 and 2x12-speed configurations, allowing riders to tailor their drivetrains for their unique gravel riding demands.
GRX RX827 is designed to be close to the rider, offering the freedom to choose without being tied down. With no special frame requirements, it can be easily installed on any gravel bike you own. This allows you to upgrade your favorite bike with the latest technology and take it on even more adventures. Centered around the RD-RX827 wireless rear derailleur, GRX 1x12-speed brings unmatched chain management and precise shifting to gravel riders.
The new system is engineered for seamless performance across varied terrains, whether racing, exploring backroads, or embarking on all-day adventures.

Fully Wireless Di2 Platform - Designed for ultimate reliability, the wireless Di2 system offers fast, precise shifting and compatibility with all SHIMANO 12-speed wireless shifters (GRX, DURA-ACE, ULTEGRA, SHIMANO 105 Di2 drop bar options, as well as XTR and DEORE XT flat bar Di2 models).
Robust Gravel Drivetrain – Borrowing its design from SHIMANO’s MTB Di2 line, the RX827 rear derailleur features the same low-profile design, skid plate, protected battery, and automatic impact recovery function.
Refined Ergonomics – Enhanced grip, clean cockpit design, and unparalleled customization for superior handling and comfort.
Expanded Versatility – Added GRX component options allow riders to optimize performance based on terrain, style, and personal preferences.

The new GRX 1x12-speed drivetrain pairs the RD-RX827 wireless rear derailleur with SHIMANO’s existing RX825 Di2 DUAL CONTROL LEVERS, RX820 crankset, brakes, and XT 10-51T cassette. This combination delivers SHIMANO’s hallmark Di2 performance in a sleek, robust 1x12-speed package. Riders can choose between 40T or 42T chainrings and pair them with SHIMANO’s line of 10-51T MICRO SPLINE cassettes. Similarly, RX827 offers an electronic option for drop bar mountain/adventure bikes that utilize mountain bike crank standards. Whether climbing steep trails or cruising flat stretches, the GRX system adapts to any riding style or terrain.

Features - Shimano GRX BL-RX825-L Disc Brake Lever for Di2 1x12

BL-RX825-L - Hydraulic Disc Brake Lever:
1x12-speed brake lever option
Gravel-specific brake lever and bracket ergonomics
Flared drop bar optimization
Anti-slip coating on brake lever surface
19.5 grams lighter (188 grams for BL-RX825-L versus 207.5 grams for ST-RX825-L)

Product features

Use: Gravel, Cyclocross
Group: GRX RX827
Model: BL-RX825-L
Type: Brake lever for Di2 1x12
Handlebar mounting: left
Lever reach adjust: Yes, with tool
Handlebar diameter: 23.8mm/24.2mm
Brake-type: Hydraulic Disc Brake
Cable connection: Straight
Recommended brake hose: SM-BH90-JK-SS
Recommended brake caliper: BR-RX820
Recommended brake rotor: SM-RT64, SM-RT70, SM-RT800

Material

Lever: Aluminum

Color

Series color

Weight

approx. 188g (manufacturer information)

Shimano