Shimano GRX ST-RX815 Di2 Hydraulic Disc Brakeset Rear closeout Carbon/Kevlar Composite Bead keeps the

Carbon/Kevlar Composite Bead keeps the tire secured to the rim and provides greater strength to withstand the higher pressures needed in road tires

Eagle pulley technology provides greater efficiency

low density core

9mm open dropout design

Zwift and other indoor cycling apps

Shimano GRX ST-RX815 Di2 Hydraulic Disc Brakeset Rear closeout Carbon/Kevlar Composite Bead keeps theThe Shimano GRX ST RX815 11 speed Di2 shift brake lever integrates electronic shifting with improved grip and confidence on chippy surfaces and descents. A raised hood head prevents hand misalignment and slippage, while a recessed finger notch prevents upward slipping Anti slip texture and brake lever coating Higher brake lever axis and curved lever allow for higher braking efficiency to reduce fatigue on long rides Tooled reach adjust allows for