Truvativ 40 0-Degree 42 Height 31.8 1-1/8 Hussefelt Stem (Blast Black) Go to amazon.com Related posts Check expert advices for mtb stem? FeatureMaterial: Forged AL-6061-T6Weight: 203g (40mm)Bolts: CrMoRecommended Group: Downhill, Freeride DescriptionForged 6061-T6 aluminum with 4-bolt faceplate and 2-bolt steerer clamp. 42mm steerer clamp stack height.