Thomson titanium mtb riser bartitanium is a wonderful material for a handlebar not as light as carbon but for a little weight you get an unparralled ride strength and beauty count for something as well this bar will look good and ride well on your bike for years built for 31 8mm stems no shims are used for clamping the thomson titanium bar the very best bar you can buy for a rigid mtb features material titanium length 730mm rise 15mm back sweep 8 up sweep 5 clamp diameter 31 8mm wei