ProHub Brake Caliper

The Wilwood Front Hub Kit (Race) is a forged aluminum ProHub kit offering a lightweight and fully user-serviceable solution for braking systems. Designed as a direct bolt-on, this kit enhances strength and durability compared to OE-type steel replacement hubs. Its innovative ProHub design eliminates the one-piece, sealed ball hub bearing in favor of a system that accommodates any brake package configured for the stock spindle and hub. This kit features a unique spindle collar and lock-nut system that incorporates separate, wider-spaced inner and outer tapered roller bearings. This design provides superior hub support and increased load-carrying capacity. Maintenance is simplified, with regular bearing lubrication and the ability to manually adjust bearing preload infinitely. The hub is constructed from forged aluminum with a bare finish and features a hat mount style. It has a bolt circle of 4 x 3.93 inches and a stud diameter of 12mm x 1.5. This specific kit is compatible with the 1990-2005 Mazda MX-5 Miata and requires a factory disc spindle. The kit does not include calipers. A wheel clearance diagram should be consulted to ensure fitment with specific wheels.