Galfer Brake Adapter PM +20mm
Take note of the orientation for the adapter and take care when first assembling - tighten the screws slowly, checking caliper and disc clearance. Correct assembly will result in a caliper that's silent and effective.
Putting on a larger brake disc is the easiest way to get more braking power without upgrading to better brake calipers or systems. If you're looking for better braking, start with a bigger disc!