We’ve created a specific carbon fiber flat bar with an off center clamp area allowing a flat riding position and reversible for a 5mm drop for 29 inch bikes. They also have 8° of backsweep for comfort and 730mm in width for plenty of leverage. 1.5K woven impact ends help prevent damage to unidirectional fibers from shortening the bar or impact with the ground. With a light weight and precision tolerance clamp sections, it’s the best bar for your Thomson X4 stem. The bars are made with three different fiber types with different tensile strength and tensile modulus, including high strength carbon fibers. This helps to allocate stiffness and flex where needed. They are molded with an EPS mandrel inside to avoid wrinkles inside the layup during molding. Most other bars are molded over inflated nylon bladders. All carbon fiber material is produced by Toray and uses tailor made nano Epoxy Resin for very high impact resistance. Toray is the main supplier of carbon fiber to Boeing and Airbus.