This kit features the same front brake components you get when you check the high performance brake option box on the Revology 1966 K-GT Mustang order guide. In Wilwood parlance, this Forged Narrow Superlite 6R (FNSL6R) big brake kit features billet forged six-piston calipers with 12.89” rotors to deliver the ultimate combination for braking power and impressive looks. For use with 17” and larger wheels. Available in black or red powder coat and polished finishes. Blue, yellow, and silver available by special order. Cross-drilled rotors are also available, call us for details! Stock item. Front brake hose Flexline kit 220-8307 and Spindle Nut Kit 370-10090 sold separately.