PS-ONE The PS-One is cut from a piece of heat-treated aluminum billet and then CNC-machined into one of the most unique stems that it should be at the Smithsonian instead of on your bike. The CNC work on this stem is second to none. External machining provides the PS-One with it's unique outer surface, along with the internal milling, provides a significant weight savings too. The PS-One has a thin 42mm body with dual extentions to provide a wider 50mm bar clamping stance. The shot-peened and anodized surface treatment finishes off this hard-to-beat package. Riding Style: DH, DS, FR Material: aluminum 6061-T6 Angle: 5 degrees Bar bore: 25.4mm Diameter: 1-1/8" Extension: 50mm Weight: 340g Stack height: 50mm Colors: black / silver / orange Surface finish: sand-blasted and anodized Manufacturing process: full CNC-machined Logo: all lasered logo