Allstar Performance disc brake kit for Mustang II, 5 on 4.5in bolt circle, in race car brake systems. Upgrades brakes for reliable stopping in racing setups. Bolt-on installation for track use.
Disc Brake Kit Rotors With 1/2"-20 Wheel Studs 5 On 4.50" B.C. GM Metric. 1 Piston Caliper. 11 in Plain Iron Rotor.