|Posted||27 days ago|
|Gear Count||11 speed|
Shimano GRX Di2 ST-RX815 STI for Hydraulic Disc Brakes - 2x11-speed - left right set
Shimano GRX - Explore beyond
Instead of telling gravel riders what they needed, Shimano asked them what they wanted for their offroad adventures. The result are the Shimano GRX components which represent the first series especially developed for riding on rough roads and through gravel. The Shimano GRX sets itself apart from the rest of the component world with its gravel specific ergonomics, optimized gearing options, rugged reliability as well as a quiet and stable drivetrain.
Shimano GRX Di2 ST-RX815 shift/brake lever
The electronic/hydraulic Shimano GRX Di2 ST-RX815 dual control lever provides Gravel inspired ergonomics. Particularly striking is the shape of the handle whose hood head is raised to prevent misalignment while the recessed finger notch prevents the hand from slipping upwards. Like the handle, also the lever features an anti-slip coating for greater mixed-terrain control.
In terms of shifting performance the 2x11-speed GRX Di2 STI lever can take full advantage of the well-known digital precision of the Shimano Di2 electronic shift systems and theSynchronized Shiftingtechnology. In contrast the braking performance is optimized by the brake lever's rotary axle which is positioned 18 mm higher than usual and Shimano'sSERVOWAVEtechnology improving the lever's modulation ability.
In addition, the programmable Di2 shift/brake lever features three switches (two on the side and one on the hood's top) that can be used to operate third-party devices such as compatible lights or bike computers. In order to meet the individual needs of the driver, the hydraulic brake lever offers reach and free stroke adjustment as well.
Number of E-Tube ports:2
Shimano's Synchronized Shift technology is a new feature introduced to their electronic road groupsets, designed to simplify gear choice and reduce decision making in racing situations. When riding at maximum capacity, decision making can be impaired. The less stresses on a rider and the less decisions a rider has to make, the less mistakes they will make. Therefore Shimano Synchronized Shift is designed to choose the next biggest or lowest gear ratio irrespective of whether a gear change needs to be made by the front or rear derailleur.
Shimano's Synchronized Shift technology adds two shifting modes to the standard manual one, in which front and rear derailleur were controlled independently from each other:
Full Synchronized Shift mode:
The front derailleur reacts based on the rear derailleur’s shift action. This essentially means that, when activated, there is no need for two separate shifters to control front and rear derailleurs, the two buttons on one shifter will control both derailleurs.
Semi Synchronized Shift mode:
The rear derailleur reacts based on the front derailleur’s shift action, shifting to the next most appropriate rear gear when the rider makes a front shift.
Because the brake lever absorbs a lot of braking distance right at the start of its movement, the brake pads have disc contact more quickly and it remains more lever travel to adjust braking force. That is why SERVO WAVE brake systems are characterized by faster response, higher performance and shorter idle travel.
brake hose: SM-BH90-JK-SSR
Note: In order to ensure proper functioning of the electronic Di2 drive system, all components need the same firmware version. The optional diagnostic device allows for reading out or updating the firmware version. An operation of components with different firmware versions may cause a malfunction or loss of function.
Included in delivery: left STI lever
Material: housing: glass fiber reinforced polymer (GFRP)
lever: aluminium (painted)
Weight supplement: pair | manufacturer's specs
Product Name: Shimano GRX Di2 ST-RX815 STI for Hydraulic Disc Brakes - 2x11-speed - left/right
Manufacturer: Shimano Parts
Item Code: SHI422776
usage bikesport: Road Bike, Gravel
groupset: Shimano Di2 (electronic)
number of chainrings: 2
shifting system: 11-speed
shifting actuation: Electronic
grip clamping diameter: 23,8mm
brake actuation: Hydraulic
brake lever version: Drop Bar
brake fluid: Mineral Oil
Disc brake - version: Brake lever
separate / pair: Separate
shift lever type: STI/Ergopower/DoubleTap
Model year: 2022
manufacturer item code: ISTRX815L
Weight Source: Manufacturer
Weighed Version: pair
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