Wilwood Forged Narrow Superlite 6R 6 Piston Front Brake Kit - Red - GM F-Body / X-Body 1970-78FNSL6R Billet Forged six piston calipers with 12. 88" diameter, 1 piece rotor and hats kits deliver the cost effective combination for braking power and style in this group of kits engineered for traditional non ABS spindles on American muscle cars and vintage rods. Built exclusively for 17" and larger wheels, FNSL6 kits enhance tire and suspension upgrades on all types of custom show and high performance dual purpose street and track machines. A full