By: Henry Robertshaw

The system, which we first saw as a prototype last year, is compatible with the Shimano Di2, SRAM eTap, and Campagnolo EPS electronic groupsets, with shifting controlled by a head unit that is connected to the groupset. This head unit then takes your riding data (speed, cadence, heart rate and wattage) to determine your optimum cadence, and then shifts into the appropriate gear.
Not only does this mean that you don’t have to think about changing gears, but Baron Controls, the company behind ProShift, says that it could help with your training, adjusting your gear selection to make sure that you always stay at the correct power if you’re doing structured intervals.
Read more at http://www.cyclingweekly.co.uk/news/product-news/proshift-automatic-shifting-288890#fc7GuyHkP40MqYCi.99
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