SRAM Rival E1 Aero Disc Brake - Front - 1100mm - Black PDP|PLP or you can run any

or you can run any AA-sized Alkaline or MiMh rechargeable

They are also great to have on hand for removing cassettes

2mm diameter

this mount's sleek

SRAM Rival E1 Aero Disc Brake - Front - 1100mm - Black PDP|PLP or you can run anyThe power and control of hydraulic disc brakes comes to Rival, in a perfect package for TT tri. These brakes bring all the power with low effort so you stay fresh for your effort. Features Optimised power and modulation for triathlon and time trial Reach Adjust to personalise fit for more hand sizes Stealth a majig connector makes initial setup fast and convenient Application: Road Brake type: Hydraulic Blade material: Carbon LFRT Colour: Black