Your stem has to resist flexing during sprints and accelerations, clamp securely to the fork and handlebar, and support your weight over significant impacts. Its a difficult job, but the Service CourseR SL stem is still able to combine strength, stiffness and reliability at a weight of only 120 grams 100 mm. The Service Course SL has high strength, 3D forged construction, 7075 series aluminum and titanium bolts to deliver an exceptional strength to weight ratio while allowing for smooth lines to complement the aesthetics of modern frames. We make our Service Course SL stems in seven lengths 70 mm to 130 mm in 10 mm increments and two angles 6 degrees and 17 degrees to meet any riders fitting needs.We replaced the stainless steel bolts with titanium ones and use TORXR heads on all bolts for precision torque readings and ease of adjustment. Every piece in the Service Course SL line is available in the standard gloss black with white logos, as well as a new Beyond Black color scheme with laser etched black logos for a stealthy look.