Race Face Atlas MTB StemA versatile stem that can withstand the rigours of rowdy mountain riding, this aluminium-built Atlas model gives a protective and reliable performance on every run. Featuring a four-bolt bar clamp with interlocking u-shaped geometry, it provides a dependable and durable connection between your bar and fork. The faceplate is designed to reduce stress risers which can bend or break your bar, rounding out a top-quality component for downhill and freeriding exertions. Features: Material: 6061-T6 Aluminium Use: Trail, All Mountain, Downhill Steerer: 1 1/8" Stack Height: 40mm Bar Diameter: 31.8mm Rise: 0mmBuy Race Face Components from Chain Reaction Cycles, the World’s Largest Online Bike Store.