Shimano ST-R8150 Ultegra Di2 STI for drop bar without E-tube wires, left hand Bontrager Compact vertical design and waterproof

Compact vertical design and waterproof

All Weather Spray is a lubricant with revolutionary micro-additives for chains

The tunable SyncDrive Core motor provides support ratios up to 300 percent

and disc brakes give you added control on rugged roads or dirt

Conductive thread creates a touchscreen-compatible pointer finger

Shimano ST-R8150 Ultegra Di2 STI for drop bar without E-tube wires, left hand Bontrager Compact vertical design and waterproofWith Di2 technology shifting is easy and precise just a light touch, as soft as a mouse click, is sufficient for the front or rear derailleur to instantaneously select the correct gearFull and semi synchronized shifting programable, Synchro shift compatible meaning a single shifter can control both front and rear shifting which can be fully custom tuned to your riding preferences. Semi synchronized shifting means when a front shift is made the rear