Check the listing for details. Ritchey WCS Switch Stem - 31.8mm Clamp, 70mm, Black. Color: Black, Condition: New. Listed at 124.82 USD. The WCS Switch stem was designed to stealthily conceal cables into the headset and frame. Up to three cables – such as for the rear brake, shifter, electronic drivetrain or even dropper post - are effortlessly integrated with the Ritchey Switch System spacers and Switch headset (both sold separately) to cleanly route the hidden cables into the frame.The Ritchey Switch System is an innovative integrated system designed to easily conceal internally routed cables, wires, and hydraulic lines from the handlebar into bicycle frames with straight 1.5" head tubes together with tapered 1-1/8" – 1.5" forks. The Switch System consists of three elements: Switch Headset, Headset Spacers and Adapters (Sold Separately). Features the tried-and-true Ritchey C220 handlebar clamp design, with an increased.