Shimano GRX Di2 STI ST-RX815 2-/11-speed Shift/Brake Lever

GRX Di2 ST-RX815 shift/brake lever by Shimano - with a higher lever axle

The Shimano GRX Di2 ST-RX815 electronic shift/brake lever has higher grip bumps, which accommodates the hand position when gravel riding. The axle is shifted upwards for greater braking power, reducing fatigue on long journeys. The ST-RX815s provides more grip and self-confidence on rough surfaces and in downhill passages.

Are you interested in the GRX series? Then have a look at our Shimano gravel site. You will find many more products there.

Information regarding the return of batteries and electrical equipment:

Information on the return and disposal of batteries and electrical equipment can be found here.

Specifications:

Series:

GRX Di2 RX815

Application:

Gravel, Cyclocross, City & Touring

Gearing:

2x, 11-speed

Shifting System:

electronic

Brake Type:

hydraulic

Technical Information:

Brake Lever Material:

aluminium

Lever Body Material:

carbon (CFRP)

Hose:

SM-BH90-JK-SSR (not included)

Actuation:

mineral oil

Mount:

clamp (closed)

Reach Adjust:

bolt

Adjustment Options:

reach adjust, contact point

Compatibility:

Clamp Diameter:

23.8 - 24.2 mm

Power Cable:

EW-SD50 (2 x connection)

Rear Derailleur:

RD-R9150, RD-R8050, RD-9070, RD-6870, RD-RX805, RD-RX815, RD-RX817

Front Derailleur:

FD-R9150, FD-R8050, FD-9070, FD-6870, FD-RX815

Crank:

FC-R9100, FC-R9100-P, FC-R8000, FC-R7000, FC-RS510, FC-9000, FC-6800, FC-5800, FC-RS500, FC-U5000-2, FC-RX810-2, FC-RX600-11

Cassette:

CS-R9100, CS-9000, CS-6800, CS-5800, CS-R8000, CS-HG800-11, CS-R7000, CS-HG700-11, CS-M8000-11, CS-M7000-11, CS-M5100-11

Chain:

CN-9000, CN-6800, CN-HG901-11, CN-HG701-11, CN-HG601-11, CN-LG500

Brake Caliper:

BR-RX810 (recommended), BR-R9270, BR-R9170, BR-R8170, BR-R8070, BR-R7170, BR-R7070, BR-RS785, BR-RX820, BR-RX820-LE, BR-RX400, BR-4770

Additional Brake Lever:

BL-RX812

Features:

• safer on rough surfaces and in descents
• thumb notch increases grip
• anti-slip brake lever, painted
• textured surface and larger humps keep the hand from slipping off
• higher brake lever axle for more brake performance
• faster brake contact thanks to Servo Wave
• programmable gearing
• E-Tube project ensures firmware updates
• multiple input: hold
• remote switch
• funnel venting with M7 funnel (TL-BR002)

Technology:

STI Dual Control
Shimano Total Integration (STI) means the combination of braking and shifting functions in one lever, which increases safety when riding. By refining the technology, it became possible to make shifting so smooth at the front and rear that they can be triggered with just one finger. Shimano calls such levers Dual Control Levers (DCL).

Digital Integrated Intelligence (Di2)
Di2 systems are the electronic shifting systems from Shimano. They are based on the SEIS, the Shimano Electronic Intelligent System, which takes over the index shifting function from the mechanical components, only via power cables or radio signals and not via a Bowden cable. Shifting is done by simply pressing a button. This has the advantage that no great effort is required, your concentration on the ride is not disturbed and operation is easy even with cold hands. In addition, the electronic gear changes are very fast and highly precise. There is also no risk of a defective circuit due to dirty cables or other problems. You can adjust individual settings via the E-Tube Project, such as adjusting the shifting speed, the number of shifting operations per button press or the Synchro or Semi-Synchro shifting function. Shimano offers an app for this purpose. Gear maintenance and firmware updates are also done via E-Tube, with the bike connected to a PC running the appropriate E-Tube software for more extensive workshop work.

Servo Wave
Shimano Servo Wave technology optimises the travel of your brake levers. During the braking process, the brake pads are guided quickly to the brake rotor with very short lever travel. The greater part of the lever travel is reserved for the actual braking force. In this way, you can apply your braking power in a more targeted manner and use it more effectively.

Models:

2-speed:

Mount:

left

Manufacturer Number:

I-STRX815L

11-speed:

Mount:

right

Manufacturer Number:

I-STRX815R

Contents:

• 1 x Shimano GRX Di2 ST-RX815 shift/brake lever
• 1 x Shimano TL-EW02 plug tool (11-speed version only)