GREX Brake Systems are designed as full competition-spec. brake kits suitable for street use. Each application-specific GREX Brake System kit will work with a wide variety of wheels. Lightweight 4 and 6 piston aluminum calipers are designed to be as compact as possible and are stylishly protected by either the classic GREX Gold hard anodized finish or a new stylish chrome polish finish. Large lightweight GREX two-piece rotors use an anodized, duralumin bell housing to prevent rusting and scratching. The finest quality Earl's TeflonŽ lined stainless braided brake hoses are also included for maximum performance and reliability.