Featuring a wider braking surface for compatibility with a wider variety of manufacturer&';s brakes, Hope&';s floating rotors allow for better heat management and have a machined radius on either edge of the brake rotor. Features a custom steel braking surface riveted to an aluminum central carrier. Floating design compensates for thermal expansion with constant braking and self-centers to reduce drag. Includes rotor bolts 6-bolt mount 1.8mm thick Built for specifically use with Hope Brakes but compatible with all brake systems built to use 1.8mm rotor. If your new rotors are a different size than the ones you&';re replacing, then you&';ll need new brake adapters! Check out our guide to getting the right brake adapters to spend less time on the computer and more on the trails.