The classic Thomson Elite is still manufactured for people who want to run 25.4 bars. Machined from 7000 series aluminum, the ageless Thomson Elite stem is a one-piece design with no welds or joints. A 48 mm clamp and patented undercut combine to grip the handlebar more securely while Thomsons 'two clamps in one'' design provides a very stiff ride with little to no flexing or squeaking.