Anti knock back spring - small bore x 4 pcs
Universal 6 lb. Anti-Knock-Back Springs Can be used for other brake manufactures caliper pistons. For 36.5mm pistons and smaller.
The Anti-Knock-Back Springs are made from Spring Material as opposed to piano wire used by other caliper manufacturers. Sold in 4 Packs
Prevents pad-knock back resulting in long pedal travel after curbing/alligator strips.