AP Racing 9660 and 9668 Anti Rattle Clips
Being true racing calipers, the 9660/9668 calipers will have pad rattle due the voids built into the caliper for pad expansion under high heat conditions. It is not noticeable on the track, but on the street is a different story.
If you care about NVH we highly recommend these for your BBK setup. Price includes 4 clips for 2 calipers.
When swapping to race pads we advise to put the standard caliper bridge back in.
Essex Designed Pad Tension Blocks are precision machined from billet aluminum, hard anodized, and topped with a heat-treated stainless steel spring. These blocks install in place of the original pad retention blocks in AP Racing's CP9660/CP9668 caliper. They place a small amount of tension on the top of the pad, substantially decreasing its movement inside the caliper. Included in each Pad Tension Kit are two pad tension blocks, which is enough for one AP Racing CP9660/CP9668 caliper.