Shimano GRX-825 2-Speed Di2 Left Front STI Lever

The left STI Shimano GRX-825 2s Di2 lever is the wireless electronic control for the left side of a GRX 2x12-speed drivetrain, with hydraulic disc braking. Choose this side if you need to control front shifting: the right lever is sold separately, so buy both if you need a complete set.

Check compatibility before ordering: the lever only works with 2x12 drivetrains, with Shimano mineral oil and with the brake hose connected to the lever. It is not suitable for mechanical derailleurs or wired Di2 EW-SD300 or EW-WU111 systems. The CR1632 batteries are user-replaceable, with an estimated life of 3,5–4 years. Compatible satellite shifters are SW-RS801-S, SW-RS801-T and SW-RS801-E.

Founded in 1921 in Sakai, Japan, by Shozaburo Shimano, Shimano is still based in the same city today. For cyclists, it makes drivetrains, brakes, wheels, pedals and cycling shoes. Its history in bicycle components began with the production of freewheels in 1922.