Tapered 300mm steerer with 45 degree integrated crown race- Rack, fender and bottle mounts- Full monocoque carbon construction- Fits tires up to 48c wide- Flat mount disc brake compatible(FM160) that fits rotors from 160mm to 180mm- Includes 12mm thru-axle, convertible between 12 or 15mm thru-axles- Use RC3440 to convert to 15mm thru-axle- Please note: The fork crown front mount is closed and is not intended for lights or accessory attachment- The fork's multi-purpose and dropout rack mounts provide versatile mounting options for racks and accessories