Ritchey Road Handlebar SuperlogicProduct Details In addition to full or partial internal cable routing, the new lightweight Ritchey SuperLogic EvoCurve is a top level, lightweight carbon handlebar featuring a short reach, shallow drop, and a 4 sweep at the ergonomic top section. Its smooth, double radius drops afford great hand position. The no slip grit at stem and brake lever mounting surfaces ensures confident installation, while position lines make sure levers are installed