 AeroLogic features on the C-Series include a shrouded water bottle mount on the down tube, aero-tuned tube cross sections, a "morphed" shaping of the seat stays, and a proprietary bladed and bowed aero fork.Litespeed's Reactive Pressure Molding (RPM) is an advanced molding method utilized during manufacture of Litespeed's newest composite frames.The three primary benefits of RPM are weight reduction, increased stiffness, and improved durability.