The Wilwood 140-12271-D is a complete front big-brake package built on Wilwood's Forged Narrow Superlite 6R platform. It is a Forged Narrow Superlite 6R Big Brake Front Brake Kit with hub and 1PC rotor, black powder coat caliper, and a drilled and slotted rotor. Compared with factory drum or single-piston disc hardware, the six-piston caliper and 12.88-inch rotor give a street, autocross, or strip build a much larger thermal and clamping margin, which is the real justification for the price. This kit suits builders who run 17-inch or larger wheels and want a serviceable front end that can grow with the car.
Fitment is the first thing to confirm. The manufacturer's listing gives a hub offset of +.38 and radial mount calipers, with a minimum wheel diameter of 17 inches. Wilwood's own catalog copy for the non-drilled version describes the kit as designed for 67-72 Camaro/Nova and other applications, while retailer titles list 67-69 Camaro and 64-72 Nova/Chevelle, so verify your spindle year and bolt pattern with the manufacturer before ordering. The kit does not include brake lines; the manufacturer lists the Line Kit Needed 220-7056 separately. For DIY work, the manufacturer's instructions for similar Superlite 6R hat kits call for torquing the rotor bolts to 155 in-lbs with red Loctite 271, and for wheel studs torqued to 77 ft-lb.
Search terms this kit matches include Wilwood 140-12271-D, FNSL6R big brake kit, 67-69 Camaro front disc brake upgrade, drilled Superlite 6R hat kit, and 1967 Chevelle front big brake kit. Plan for a full teardown to bare spindles, and expect to pack and adjust the bearings yourself. Wilwood's instructions stress that the hat must fit flush against the axle hub flange or excessive rotor run out may result, and that this kit contains distinct right and left hand calipers that must be mounted in a specific direction.
The manufacturer specifies a minimum wheel diameter of 17 inches for this kit.
No. The manufacturer lists a separate line kit, part number 220-7056, as needed for installation.
Per the manufacturer's assembly instructions for similar Superlite 6R kits, the kit contains distinct right and left hand calipers that must be mounted in a specific direction, with the largest pistons at the rotor exit end. Do not swap them.
Expect a full front brake teardown down to bare spindles, and read the manufacturer's instructions completely before starting. Tools include a torque wrench, red Loctite 271 threadlocker, high-temperature disc brake bearing grease, a new cotter pin, and shims for caliper alignment. The manufacturer's instructions say to adjust bearings per OEM specifications, and the Superlite 6R assembly guides emphasize checking that the bracket sits square and the rotor is centered in the caliper. Wilwood's documentation also notes that OEM brake lines will not adapt to Wilwood calipers, so plan for new flexible lines and verify wheel clearance before final assembly.
