HHI custom calipers are inherently stronger, more rigid and weigh less than the average stock or OEM caliper.Precision CNC-machined Billet Aluminum construction.Engineered with Dual EPDM Polymer Seals, and Stainless-Steel Pistons.Features differential bore technology for optimum performance in late model kits.All kits are complete with Chrome Grade 8 Hardware and fittings.Quick-change design for easy pad maintenanceDual, hidden bleeders for easy bleedingDirect Bolt-On design in most front applications from 1984 and up, Springer kits come with bracket.Front calipers are a 4 piston differential bore, while the Springer applications are the symmetrical bore. Rear kits included bracket, except where noted for a one piece design.Comes in Show Chrome & Black Anodized Finish.Made in the U.S.A.