Description
The Wilwood Forged Narrow Superlite 6R Big Brake Front Brake Kit (part number 140-12307-D; Summit Racing part number WIL-140-12307-D) is a front brake upgrade designed for applications using Heidts 2-inch front drop spindles. The kit uses forged billet aluminum, black-finished six-piston front calipers and is intended to increase front braking capacity.
Included are vented front rotors measuring 12.88 inches (327.20 mm) in diameter and 1.10 inches thick. Their friction surfaces are cross-drilled and slotted. The rotors have a dual bolt pattern: 5 x 4.50-inch and 5 x 4.75-inch, equivalent to 5 x 114.30 mm and 5 x 120.65 mm.
- Front calipers and front rotors included; rear calipers and rear rotors are not included.
- Brake pads included, with BP-10 friction material.
- Includes 1/2-inch-20 wheel studs.
- Minimum recommended wheel diameter: 17 inches.
- No parking brake provision.
Front spindles, master cylinder, brake booster and brake hoses are not included. The kit is not remanufactured and is sold as a kit. Wilwood describes this product line as application-specific, with compatibility for OE master-cylinder output and ABS functions where used; confirm suitability for your vehicle and configuration before ordering.
Manufacturer: Wilwood Disc Brakes. UPC: 889545016246.












