Ritchey WCS Switch Upper Headset - Switch System Compatibility Only ZS55/28.6 Upper 28.6 Threadless BLK CheckoutTitle=Garmin Tacx Alpine Trainer } Using cold forging technology Color:SILVER BLUE/BLASAM GREEN

Ritchey WCS Switch Upper Headset Switch System Compatibility Only ZS55 28.6 Upper 28.6 Threadless BLK CheckoutTitle=Garmin Tacx Alpine Trainer } Using cold forging technology Color:SILVER BLUE BLASAM GREEN } 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 BB Included No Chainline Hub Compatibility 135 142 MTB Hubs Chainring BCD Direct Mount SRAM Color Lunar Polar Crank Intended Use Mountain Crank Length (mm) 170 Defined Color Gray Drivetrain Speeds 12 Number of Chainrings Chain Retaining Single Pedal Spindle 9 16" Rings 32 Spindle Interface Type SRAM DUB keyword search X01 keyword search XO1 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 Requires a bearing insertion depth of 8