GRX Di2 ST-RX815 Shifter/Brake Set Position:Rear the DURA-ACE R9100 crank drops

the DURA-ACE R9100 crank drops weight while maximizing power transfer

66 litres - 105g (Small)• 9

high perfromance gear that is reliable

Just as importantly it creates a KOO unique design language: As an aesthetic feature it gives space to distinctive colour combinations

Capacity 1

GRX Di2 ST-RX815 Shifter/Brake Set Position:Rear the DURA-ACE R9100 crank dropsThe SHIMANO GRX DI2 DUAL CONTROL LEVER delivers light and responsive shifting for mixed terrain riding. The ergonomic shifter design improves comfort and the textured, anti slip brake lever increases control on bumpy terrain. The Di2 version offers the digital precision of SHIMANO electronic shifting and synchronized shifting. GRX Di2 ST RX815 11 speed shifters brake levers and flat mount BR RX810 hydraulic calipers Anti slip brake lever increases