Dura Ace Di2 ST R9250 shift brake 12 speed

Dura-Ace Di2 shift/brake lever for mechanical rim brakes

As the world’s best dual control shift/brake levers for rim brakes, the DURA-ACE ST-R9250 offer 12-speed shifting functionality with improved ergonomics and remarkably low weight.

The DURA-ACE ST-R9250 Dual Control shift/brake levers set standards in reliable performance with their secure cable connection and the low weight of a rim brake system. With their improved ergonomics and state-of-the-art materials, the racing pedigree of these shifters is undeniable.

Highlights

• Fast and intuitive switching
• Clearly defined click feel with ergonomic shift lever
• Better control and greater confidence under racing conditions
• The horn shape and surface structure ensure optimal grip and braking power transmission.

specification

Technologies used

In this chapter, we explain the technologies that the manufacturer uses in this product.

SLR-EV
The SLR-EV is an SLR with a symmetrical dual-pivot side-pull brake. The short-arm brake design uses two bearings and a roller to achieve greater efficiency in the pivot area, providing superior modulation and braking power. Combined with the BC-9000 brake cable, the latest calipers offer 36% more stopping power than the previous Shimano brake model. We offer versions with a symmetrical dual-axis caliper body, as well as versions for fork and chainstay mounting.

Reach Adjust
The brake lever is equipped with a reach adjustment. This allows the grip to be adapted to the size of the rider’s hand, their riding style, or personal preferences.

DCL – Dual Lever Control
DCL stands for Dual Lever Control. It combines braking and shifting functions, allowing for easy operation. The improved ergonomics are arguably even more important for maintaining this high standard than the additional gear ratios. The technology of the new shifters incorporates the stability of Shimano’s MTB technology and operates so precisely and smoothly that it’s possible to shift both front and rear derailleurs with just one finger. This is truly a highlight of Shimano’s Total Integration. To understand it, you simply have to experience it for yourself.
The dual-control shift/brake levers of DURA-ACE, ULTEGRA, and 105 have been optimized and now feature, for example, a weight-reduced pivot on the inside of the shifting mechanism and integrated shift cable routing for easier steering. The extremely compact and high-precision components work together to deliver unparalleled shifting speed.

Scope of delivery

• 1 x Shimano Dura-Ace Di2 ST-R9250 shift/brake lever (see item description for details)