Wilwood 140-17088 Wilwood Forged 6 Piston Superlite Caliper, GT 48 Vane Spec37 Slotted Rotor - 12.88x1.25Wilwood 140 17088 Wilwood Forged 6 Piston Superlite Caliper, GT 48 Vane Spec37 Slotted Rotor 12. 88x1. 25 FNSL6R billet Forged six piston calipers with 13 14 rotors deliver the ultimate 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, SL6 kits enhance tire and suspension upgrades on all types of custom show and