Ritchey WCS Switch Upper Headset - Switch System Compatibility Only ZS55/28.6 Upper 28.6 Threadless BLK MFPN=000MRSOLONDGRBL38 Rear Axle Type 12mm Thru-axle

Rear Axle Type 12mm Thru-axle Rear Hub Spacing (mm) 197

(36kg) weight limit provided the stand is securely mounted with appropriate fasteners to a solid and secure bench surface

Stem: ANVL Swage (40mm)

It also features a hidden clutch design with instant engagement and silent operation to keep the chain secure over rough terrain

Ritchey WCS Switch Upper Headset - Switch System Compatibility Only ZS55/28.6 Upper 28.6 Threadless BLK MFPN=000MRSOLONDGRBL38 Rear Axle Type 12mm Thru-axleA key component of the new Ritchey WCS Switch System the WCS Switch Upper Headset upper is designed to specifically work with the Ritchey Switch Stem to route cables wires and hydraulic lines from the handlebar through to the bicycle frame. Cables are routed from the handlebar into the headset conduit which sits on the underside of the Switch Stem and then travel through an opening on the front of the WCS Switch headset spacers before passing through