Shimano GRX RX815 Di2 Electronic Shifter & Hydraulic Brake Lever – Left

Shimano GRX ST-RX815 11-Speed Di2 Shift/Brake Lever – Precision Engineering for Endurance Riders

Engineered for riders conquering rough terrain and technical descents, the Shimano GRX ST-RX815 lever merges seamless electronic shifting with advanced ergonomic design to deliver unmatched control and comfort on demanding rides. Perfect for endurance road cyclists tackling chippy surfaces or long-distance adventures, this lever prioritizes safety and efficiency without compromising adjustability or performance.

Key Features & Benefits:
– Ergonomic Grip Innovation: A raised hood head and recessed finger notch ensure secure hand placement even during high-speed descents or bumpy trails, reducing slippage and fatigue over time.
– Powerful Braking System: A higher brake lever axis paired with a curved design boosts braking efficiency by up to 20%, minimizing hand strain during prolonged use—ideal for all-day rides or mountainous routes.
– Customizable Fit: Adjustable reach settings adapt to diverse hand sizes and riding styles, accommodating both casual enthusiasts and professional athletes seeking precision control.
– Durability Meets Comfort: Anti-slip textured grips and resin brake pads enhance traction in wet conditions while maintaining smooth operation across varied terrains.

Why It Stands Out:
Unlike generic shifters limited to flat roads, this GRX model excels in off-road scenarios where grip stability is critical—think gravel paths or alpine descents. Its Shimano Di2 compatibility ensures flawless integration with existing road drivetrains (11-speed), while flat-mount caliper compatibility simplifies setup on modern framesets.

Specifications at a Glance:
– Weight: 384g (left lever)
– Fluid Type: Mineral Oil
– Hydraulic Hose Length: 1000mm
– Compatibility: Front/Rear Derailleur: Shimano Road Di2; Caliper Mount: Flat Mount

Designed for riders who demand reliability under pressure, this lever balances cutting-edge technology with intuitive design—whether you’re navigating technical trails or logging miles on rugged backroads.