Ritchey's Comp SC Rizer Handlebar features an extra-tall 30mm rise for riders who want more room and racers who seek out control. Its 6061 aluminum construction makes this a lightweight, durable option that's ideal for those of us who don't want to break the bank over a simple upgrade. The Comp SC features a classic 25. 4mm clamp diameter, a 9 back sweep and 2 upsweep that puts us in a more comfortable position for pushing ourselves faster and further.