SHIMANO ULTEGRA ST-R8170 HYDRAULIC Di2 STI FOR DROP BAR WITHOUT E-TUBE WIRES Side:Right / 12-Speed The 8mm hardened steel shackle

The 8mm hardened steel shackle and 6mm chain provide protection against impact and leverage attacks and sleeve prevents any unwanted damage to your paintwork

MTB dedicated design

Features automotive grade glass lens

Great ventilation

Body: Aluminum

SHIMANO ULTEGRA ST-R8170 HYDRAULIC Di2 STI FOR DROP BAR WITHOUT E-TUBE WIRES Side:Right / 12-Speed The 8mm hardened steel shackleThe redesigned Shimano Ultegra Di2 ST R8170 levers feature new ergonomics and even more precise brake modulation thanks to SHIMANO's proven SERVO WAVE technology. Wireless electronic shifting provides even more control. Features FASTEST AND MOST RELIABLE SWITCHING OPERATIONS EVER Improved aerodynamics Revised DUAL CONTROL shift brake levers with raised and rounded brake grips The drive can be adjusted to the rider's preferences via the E TUBE app