XC TEST | 100mm Vs 120mm Bike | Which Is Faster?

On typical South African XC / marathon terrain, like in Jonkershoek where the Cape Epic and Origin of Trails events pass through we pitted a 100mm XC bike against a 120mm XC bike. With various Strava segments setup around a lap to time the climb, descent, traverse and full laps we set out to find out which bike is faster. More: