The Nimbus d'brake Disc Brake Mount in black mount will enable you to fit a disc brake to any Muni or big wheel frame. You just remove your existing left hand bearing clamp and replace it with this beautifully crafted disc brake mount machined from 6061 Aluminium. The d'brake has been designed to have the disc running on the inside of the frame keeping it welll out the way and allowing the rider to use their existing cranks. The disc itself mounts directly onto a Nimbus Disc hub and then all you need is the disc brake itself and your ready to go ride. With it's clever configuration it is designed to fit on almost any frame without machining.