Shimano Dura-Ace Di2 ST-R9250 ??-/????????
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生产商货号
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 a 12-way shift function with improved ergonomics and a remarkably low weight.
The DURA-ACE ST-R9250 Dual Control shift / brake levers set standards in the area of reliable performance with a secure cable connection and the low weight of a rim brake system. In view of the improved ergonomics and state-of-the-art materials, the racing genes of these shift handles cannot be denied.
Highlights
- Fast and intuitive switching
- Clearly defined click feeling with ergonomic gear lever
- Better control and confidence in racing conditions
- The croissant shape and surface structure ensure optimum grip and braking force transmission
specification
| specification | I-STR9250L | I-STR9250R |
|---|---|---|
| Area of application | Road | Road |
| Type | Shift / brake lever for mechanical brakes | Shift / brake lever for mechanical brakes |
| Suitable for | Left | To the right |
| Material shift / brake lever | Carbon fiber reinforced plastic | Carbon fiber reinforced plastic |
| Reach adjustment | Yes | Yes |
| Clamp | 23.8 - 24.2 mm | 23.8 - 24.2 mm |
| Housing material | Carbon fiber reinforced plastic | Carbon fiber reinforced plastic |
| Drive / switching stages | 2- / 12-fold, individually programmable | 2- / 12-fold, individually programmable |
| Circuit type | Electronic, semi-wireless | Electronic, semi-wireless |
| Battery / rechargeable battery | CR1632 | CR1632 |
| weight | approx. 115 g | approx. 115 g |
Technologies used
In this chapter we explain the technologies that the manufacturer uses for this product.
SLR-EV
SLR-EV is a 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 joint area and provide superior dosage and power when braking. Together with the BC-9000 brake cable, the latest brake calipers offer 36% more braking power than the previous SHIMANO brake model. And we offer versions with a symmetrical 2-axis brake body as well as versions for fork mounting and chain stay mounting.
Reach Adjust
The brake lever is equipped with a reach adjustment. This means that the handle adapts to the size of the driver's hand or to his driving style or personal preferences.
DCL - Dual Lever Control
DCL stands for Dual Lever Control (DUAL Control Lever). It has braking and switching functions and is easy to operate. The improved ergonomics are probably even more important for the high standard than additional translations. The technology of the new gear levers brings the stability of Shimano's MTB technology and works so precisely and smoothly that it is possible to shift front and rear with just one finger. This is really a highlight of Shimano Total Integration. To understand that, you just have to experience it for yourself.
The dual control shift / brake levers from DURA-ACE, ULTEGRA and 105 have been optimized and now have, for example, a weight-reduced joint on the inside of the shift mechanism and integration of the shift cable for easier steering. The extremely compact and high-precision manufactured individual parts result in an unmatched switching speed when combined.
scope of delivery
- 1 x Shimano Dura-Ace Di2 ST-R9250 shift / brake lever (see item description for details)
