Magura Gustav QM46 G Brake Adapter The Magura Gustav QM46 G Brake Adapter is specifically designed to allow riders to mount their Magura Gustav brake calipers to various types of disc brake mounting standards, with proper clearance and the correct fit. The QM46 G adapts post-mount brake standards to use a larger rotor. Select the preferred size of adapter in the dropdown menu, and get riding! Mounting hardware included. Features Includes mounting hardware to properly mount the adapter and caliper to the frame Fully compatible with Magura Gustav calipers for a perfect fit and proper clearance Available for several sizes of post mount spacing and rotor diameters select the appropriate size in the dropdown menu above | Magura | Gustav Qm46 G Disc Brake Adapter Pm 203-220