Stainless Steel Rear Brake Caliper Mount Bolt Kit to mount the rear brake caliper to the bracket. An area of the bike that quickly suffers from rust and corrosion, these alternatives are made from 316 grade Stainless Steel, which offers fantastic corrosion resistance and are machined with rolled threads for a stronger, smoother finish. The perfect upgrade. Prefer something a little more subtle? Stainless Steel is also available in black, which not only looks great but has other benefits too.. This beautiful long lasting black finish results from an application of Diamond Like Carbon Coating (DLC) This gives supreme hardness and corrosion resistance provided by a nano composite coating, which increases the fastener lifetime dramatically and helps to prevent galling. By incorporating them right from the beginning, the overall system cost can be held level or may even be reduced. Please note that due to this special coating Black Stainless Steel is not identical to our Black Aluminum.