Converts to 1 1/8" threadless steerers
· quill 22.2mm
· for 28.6mm 11/8" ahead stem

· alloy adjustable a-head stem
· 125mm extention
· 10-50º rise

· threadless riser
· steerer tube diameter 1-1/8 in
· black

· 3D forged AL6061-T6 alloy construction
· bar clamp, Ø25.4 / Ø31.8 (Ø25.4 mm with shim)
· Tool-free easy handlebar side turning.