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GRX ST-RX815 Di2 Shifter
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GRX ST-RX815 Di2 Shifter brings electronic shifting, refined grip, and superior ergonomics to gravel and adventure builds
What Our Gearhead® Experts Are Saying:
"The RX815 makes a rough gravel ride feel like smooth tarmac. Every shift is clean, braking feels controlled in any weather, and I never lose my hold—even when bombing down a rocky wash."
GRX ST-RX815 Di2 Shifter is built for endurance, speed, and control on rough routes. Electronic shifting delivers lightning changes and syncs front and rear for distraction-free performance, while the lever and hood are designed with anti-slip textures, glove-friendly button spacing, and deeper notches for confidence on technical bends. The raised pivot and curved lever design equal better braking with less fatigue, crucial for all-day rides. Whether venturing deep on gravel or racing a rough course, the RX815 provides the accuracy and hand security serious riders demand—engineered for every surface and every adventure.
Details
- Electronic shifter designed for gravel, all-road, and adventure riding
- Di2 system brings quick, programmable shifts for smooth terrain changes
- Raised hood, recessed finger notch, and anti-slip texture boost control
- Clear separation between shift buttons for accuracy with gloves
- Improved lever profile and higher pivot for fatigue-free braking
- Ergonomic shape and reach adjust fit all hand sizes and bars
- Better hand stability and braking confidence on technical surfaces
- Compatible with Shimano Di2 components and mixed surface drivetrains
- Item #SHIU19P
- Material
- aluminum
- Type
- ST-RX815
- Adjustability
- reach
- Claimed Weight
- 13.2oz (373g)
- Manufacturer Warranty
- 2 years