Home Page

Cart, contains 0 items

When autocomplete results are available use up and down arrows to review and enter to select. Touch device users, explore by touch or with swipe gestures.
Expert Help
Earn Rewards
  • Just In
  • Learn

GRX ST-RX815 Di2 Shifter

Be the first to review
Current price: $218.67 - $241.39 Original price: $283.99
Up to 23% off



GRX ST-RX815 Di2 Shifter

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.


  • Precise shifting for mixed-terrain riding at the push of a button
  • Improved grip and anti-slip traction for control
  • Redesigned lever profile to prevent hand missalignment and slippage
  • Di2 offers digital benefits of electronic and synchronized shifting
  • Ergonomic design improves comfort
  • Item #SHIU19P
Claimed Weight
13.2oz (373g)
Recommended Use
Manufacturer Warranty
2 years

What do you think about this product?


Selecting an option will reload the available reviews on the page

Sorry, we don’t currently have any of those types of reviews for this product.