Hope TR Stem - 32mm 31.8mm Clamp +/-0 1 1/8" Aluminum BlackHope TR Stem 32mm 31. 8mm Clamp + 0 1 1 8" Aluminum Black. The TR stem is a little bit lighter and more suited to trail and all mountain use compared to the style of the Gravity stem. Optimum machining has been used to obtain the lightest weight without compromising stiffness. Opposing steerer clamp bolts provide exceptionally rigid steering characteristics while the 2 piece front plate design with a simple no gap clamping system. CNC machined from a