Is a dropper post faster for XC racing?

We’re seeing more and more bikes in store with dropper posts, and naturally there is some skepticism with anything new in the XC race scene due to the worries of extra weight. We saw the same years back when dual suspension bikes entered the scene…and yet now Olympic gold medals are being won on dual suspension bikes. While the weight difference isn’t much, people are still wanting to know if it really affects speed.

Luckily the BikeRadar crew put it to the test: