K-EDGE 1x Race W Chain Guide The K-EDGE 1x Race W Chain Guide ensures zero-dropped chains on bikes without a braze-on adapter. Mounting from the water-bottle bolts the World Tour proven K-EDGE 1x chain guide will prevent chain drops and reseat a derailed chain when the rider pedals forward. Features Frame mounted utilizing water bottle attachment points for super easy set up Optimized for 11 and 12-speed drivetrains that utilize 36t to 54t round chainrings (Not Compatible with Oval Chainrings)Fully adjustable for height center-line and angle Two mounting arms are included for dialing in fit for various frame sizes (54-61cm size frames)Designed for chain retention under the most abusive conditions CNC Machined from 6061-T6 Aluminum (no plastic parts) with stainless steel hardware Weight: 62g | K-Edge | 1X Race W Chain Guide Water Bottle Attachment Point, Black/white