Ritchey WCS Switch Upper Headset - Switch System Compatibility Only ZS55/28.6 Upper 28.6 Threadless BLK CheckoutTitle=Garmin Tacx Alpine Trainer CPSC Safety Standard for Bicycle J212376

Ritchey WCS Switch Upper Headset Switch System Compatibility Only ZS55 28.6 Upper 28.6 Threadless BLK CheckoutTitle=Garmin Tacx Alpine Trainer CPSC Safety Standard for Bicycle J212376 CPSC Safety Standard for Bicycle Helmets for Persons Age 5 and Older Helmet Style Mountain Maximum Head Circumference 55 Defined Color Gray } Using cold forging technology rather than CNC machining gives the stem an incredibly smooth and unique shape STC (Shark Tooth Clamping) for a secure bar grip and less slipping Weight saving internal machining A 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 two channels on the top of the headset and into the frame