What bolt patterns and stud sizes are available in Wilwood bolt-on kits?
Front kits which include Wilwood aluminum hubs have ½” studs. With a few exceptions, hubs are manufactured to accept both 5×4.50″ and 5×4.75″ bolt patterns. Hats used in front kits are generally drilled to fit over the original OEM studs. Hats used in rear kits are generally drilled to accept ½” studs, and accommodate multiple stud patterns: 5×4.5″, 5×4.75″ and 5×5.00″ bolt circles. Some hats are available with oversize stud holes or with no holes at all. See our list of mounting hats for complete dimensional information.
