The Thomson 35mm X4 stem allows you to realize the benefits of stiffer forks and stiffer 35mm bars X4 offers precise steering, tracking, and more control while riding, all wrapped up in a beautiful design Features a traditional steerer clamp that is shaped to save weight and to be knee friendly Stem body is forged AL7050 where every surface is machined and features a 100 percent machined AL6066 faceplate Mountain Threadless 1-1/8` 50 35 0? Blk AL7050 PolishedUPC/EAN/GTIN: 875850007338