When it comes to handlebars, tried and true aluminum remains the material of choice for many pros. In part, thats because their bikes have to meet a minimum weight requirement, so theres little reason to use a sub 200g carbon fiber bar like the Zipp SL. But it also means that aluminum bars like the Service Course SL have to meet the fit, durability, and performance standards of teams like Peanut Butter Co. TWENTY12 and Cannondale prepared by CyclocrossWorld. The Service Course SL is produced using our proprietary ZTL 71 alloy and intricate internal butting processes to achieve a weight of 280g 42cm with superior strength and rigidity. It features a classic look with round cross sections throughout and is available in the same, comfortable Short Shallow or Traditional Bend shapes as our carbon bars. The drops are angled outward by 2 to reduce wrist strain.