Wilwood’s Open Wheel Front Bracket kits are manufactured from high strength aluminum alloy with an e-coat finish. Bracket set 249-14497/98 (pair Right and Left) is designed for Asphalt Sprint front spindles with a 4.00” to 4.25” mount using the Dynapro Radial Mount caliper with a 5.98” mount and 11.75” diameter rotor.