The race face aeffect 35mm stem is a new design that brings the advantages of 35 to the xctrail crowd at a mid level pricepoint while maintaining a refined race face look race face aeffect 35mm stem features forged and machined from 6061 aluminum interlocking 4 bolt bar clamp secures your bar and distributes loads away from bolts and into the body built for xctrail size 50 60 70 80 90mm rise or 6deg reversible bar diameter 35mm stack height 39mm weight