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Your cart is empty.Shimano’s GRX ST-RX815 Di2 Shifter offers precise and reliable shifting for mixed-terrain riding at the push of a button. Improved braking input performance, a higher brake lever axis, and curved brake lever all mean riders will see higher braking efficiency, which reduces fatigue on long rides. The Di2 levers guarantee precise shifting due to the clearer separation between the shift buttons so you’ll have no trouble, even if you’re wearing thicker gloves. This Di2 shifter offers the digital capabilities of Shimano electronic shifting and synchronized shifting, which increases stability and handling overall. When we break down Shimano’s improved grip, we’ll see a raised hood head, recessed finger notch, and anti-slip texture with brake lever coating. These features all improve hand alignment and slippage, but they also increase confidence on choppy surfaces. How could you worry about descents with such a solid, slip-free grip? That traction and secure hand placement will keep you stable in the cockpit as you race down gravel roads, happy as a clam.
root
Reviewed in the United States on February 9, 2020
Typical good Shimano quality, finish is like the matte grey XTR. Dramatically slimmer than cable Ultegra it replaced, repositioned pivot very nice when on hood. Undecided on the deeper curve design, i never had problem of slipping off hoods, and it makes cupping the tops of hood in a pseudo aero bar position not as comfortable. I now see the complaints of Shimano DI2 lever/buttons being too easy to confuse and understand Srams implementation. It can be reprogrammed to partially emmulate that if desired.
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