This is lightest, most advanced alloy stem in the Ritchey line, and possibly the world.
This revolutionary patented design starts with a bar clamp that wraps a full 260-degrees around the handlebar to distribute clamping stress more evenly through the handlebar, faceplate, hardware and stem body. The steer tube clamp uses three bolts and a curved slot to reduce clamp stress on the steer tube.
The body is 3D-forged from an advanced 7050 aluminum and internally machined for further weight reduction. Premium quality CrMo steel bolts are used throughout, but in a smaller T-20 Torx size that shaves a few more grams with no sacrifice in strength or rigidity.