单动力还是双轮驱动？看看卡尔·普拉特为什么骑2x11

Karl trains the whole year for an 8-day MTB stage race: the Cape Epic. He loves the double because it offers him the most gearing options. He can climb up the hills on a low gear and burn it on the outer chainring in the downhills and flat sections. This gives Karl better gear rhythm so he always has the right gearing. Find out more. drivetrainadvice.shimano.com/global/en