Shimano Dx Idr. Di2 ST-RX815 11v Double Control.

The SHIMANO GRX DI2 DUAL CONTROL LEVER provides light and responsive shifting for mixed terrain use. The ergonomic design increases comfort and the lever with anti-slip surface increases control on rough terrain. The DI2 version offers the digital precision of SHIMANO electronic shifting and synchronized shifting.

• Greater grip and reliability on rough surfaces and downhill
• The raised profile handguard prevents misalignment and slipping of the hands
• Finger groove prevents slipping up
• Reliefs and anti-slip coating on the lever
• Increased braking efficiency reduces fatigue on long journeys
• Optimized braking performance
• Higher brake lever axis and curved lever

Compatible Ultegra Di2 11v, Dura Ace Di2 11v