RavX Tempo Hi-Rider Stem 90mm, 31.8mm One-piece forged 6061 Alloy Angle:35 Weight: 156g(90mm) Handlebar Clamp Size: 25.4mm and 31.8mm/ Steerer Clamp Size: 28.6mm Extensions: 25.4mm: 75mm-90mm-110mm 31.8mm: 70mm-90mm-110