Headstems are a cost efficent way to ensure you are comfortable on your bike. They are also crucial in that they transfer a lot of power through to the frame. Stems must be strong to be able to withstand the forces but also light enough to keep the weight of the bike to a minimum. Forged from T6 heat treat 6061 Aluminium to ensure a light, comfortable and safe ride. They can be installed with the stem facing up or down depending on your required riding style. These stems from Pro, a brand of Shimano, are a lightweight quality component to add to your road bike. 3D forged Alloy one piece construction, no welds to crack! Designed specifically for road bikesA sturdy 4 bolt handlebar bracket, and 2 bolt steerer bracket6 degree angleSuitable for standard steerer tube and oversized 31.8mm handlebarFlip flop system, install the stem facing up or down.