The Defy MTB stem is the perfect choice for your Trail/All mountain build. It features a low stack height, Top-Close clamp design, wide clamping area for bar stability and an internal steerer clamp to keep your knees safe out on the trail.CNC machined, 6061 AlloyTop-Close clamp designStem cap includedItem SpecificationsBar Clamp Diameter (mm)31.8ColorBlackDefined ColorBlackLength50MaterialAluminumReach50Rise5S.H.I.S. Stem Clamp Diameter28.6Stack Height31 DMR Defy Stem Stems EAN: 5055308114343