Shimano Dura-Ace Di2 Triathlon/TT ST-R9180-L Left Hydraulic Disc Brake Dual Control Lever 2x11-Speed Speed:11 so you don't have to

so you don't have to worry about directional installation like you do with Shimano quick links for example

Elevate your cycling performance today

this cassette allows for efficient top-end gearing without changing hub standards ideal for both 1x and 2x drivetrain setups

Finish Tape         Included

Shimano Dura-Ace Di2 Triathlon/TT ST-R9180-L Left Hydraulic Disc Brake Dual Control Lever 2x11-Speed Speed:11 so you don't have toOvercoming the sometimes complicated cable routing of time trial and triathlon bikes, the DURA ACE R9180 levers bring the confidence of hydraulic disc brakes to the sleekest bikes in the world. Combined with the plug and play ease of SHIMANO DI2 electronic shifting, they offer an advantage in any race. Optimum power transmitted with firm grip More aerodynamic and better grip feeling Switch button integrated inside without hand release Intuitive