The Carbon Riser model is 750mm wide and offers 15mm of rise together with a 8° backsweep and 5° upsweep. It’s built for strength with enough flex built in for all day comfort. It’s strong enough for all mountain/trail riding and light enough for racing. 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. 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.