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Six piston Wilwood stopping power for first gen Camaro, Nova, and Chevelle
The Wilwood 140-9803-D Forged Narrow Superlite 6R Big Brake Front Brake Kit is the no compromise upgrade for 1967 to 1972 Camaro, 1964 to 1972 Chevelle, El Camino, and Monte Carlo, and 1964 to 1974 Chevy II and Nova running factory disc or drum brake spindles. FNSL6R billet forged six piston calipers clamp on 12.88 inch SRP drilled and slotted rotors mounted to flared bell aluminum hats and hub mount style aluminum hubs. The result is the modern braking authority your classic deserves, with the show ready style that fits 17 inch and larger wheels.
Why builders trust the Wilwood Forged Narrow Superlite 6R
- Forged billet six piston calipers in black powder coat for maximum strength at minimum weight
- 12.88 inch SRP drilled and slotted Spec-37 iron rotors with black electro coat finish, dynamically balanced
- Flared bell aluminum hats with dual 5 on 4.50 and 5 on 4.75 bolt patterns for wheel flexibility
- Aluminum hub mount style hubs reduce unsprung weight versus factory cast iron units
- OE hub offset of plus 0.38 inch for proper geometry on traditional non ABS spindles
- Includes BP-10 pads, wheel studs, bearings, seals, dust caps, and all mounting hardware
Engineered for street, show, and dual purpose track builds
FNSL6R calipers combine three piston bores, 1.62 inch and twin 1.12 inch, for 4.04 square inches of total piston area and 8.2 square inches of pad area. That clamping force, paired with the larger 12.88 inch rotor swept area, delivers a massive jump in stopping power and heat capacity over the original single piston factory disc or drum setup. The hub mount layout keeps everything purpose built and serviceable, and the OE hub offset preserves correct track width geometry.
Fitment
This Wilwood Forged Narrow Superlite 6R Big Brake Front Kit, 140-9803-D, fits the following GM A body, F body, and X body chassis on factory disc or drum spindles:
- 1967 to 1969 Chevrolet Camaro, factory disc or drum spindle, including 1968 to 1969 Z/28 with four wheel disc
- 1964 to 1966 Chevrolet Chevelle, all
- 1967 to 1972 Chevrolet Chevelle, factory disc or drum spindle
- 1964 to 1966 Chevrolet Chevy II, all
- 1967 to 1968 Chevrolet Chevy II, factory disc or drum spindle
- 1964 to 1966 Chevrolet El Camino, all
- 1967 to 1972 Chevrolet El Camino, factory disc or drum spindle
- 1970 to 1972 Chevrolet Monte Carlo, factory disc spindle
- 1969 to 1974 Chevrolet Nova, factory disc or drum spindle
Always verify your spindle type and wheel clearance against the Wilwood installation diagram before ordering. Minimum 17 inch wheel diameter required. A Wilwood 220-7056 brake line kit is recommended to complete the install.
Specifications
- Part number: 140-9803-D
- Caliper: Forged Narrow Superlite 6R, six piston, black powder coat
- Piston bores: 1.62 inch and twin 1.12 inch, stainless
- Total piston area: 4.04 square inches
- Rotor: 12.88 inch SRP drilled and slotted, Spec-37 iron, black electro coat
- Rotor width: 1.10 inch, 48 curved vane
- Hat: Flared bell aluminum, 1.750 inch offset, dual 5 on 4.50 and 5 on 4.75
- Hub: Hat mount aluminum, hub offset plus 0.38 inch
- Pad compound: BP-10
- Mount type: Radial
- Minimum wheel diameter: 17 inch
What is in the box
- Pair of Forged Narrow Superlite 6R calipers, left and right, black powder coat
- Pair of 12.88 inch SRP drilled and slotted rotors, left and right
- Pair of aluminum flared bell hats
- Pair of aluminum hubs with bearings, races, seals, and dust caps
- Wheel studs in two bolt patterns
- BP-10 brake pad axle set
- Caliper mounting hardware, shims, and complete instruction sheet
Installation Instructions
- Raise and support the vehicle, remove the front wheels, and disassemble the factory front brakes down to the bare spindles. Save the OEM spindle nuts and nut locks.
- Verify wheel clearance using the Wilwood diagram and confirm the correct hub stud pattern, 5 on 4.50 or 5 on 4.75, for your wheels.
- Press the wheel studs into the hub and torque to 77 ft-lb. Pack the inner bearing cone with high temperature grease and seat it in the back of the hub, then press the grease seal into place.
- Attach the rotor to the flared bell hat with the supplied bolts, apply red threadlocker, and torque in an alternating sequence to 25 ft-lb. Then mount the rotor and hat assembly to the hub with red threadlocker and torque to 45 ft-lb.
- Pack the outer bearing cone, slide the hub and rotor assembly onto the spindle, and secure with the spindle washer and OEM adjusting nut. Adjust the bearing preload per OEM specifications, install the lock and dust cap.
- Mount the caliper to the spindle using the supplied bolts and washers. Center the rotor in the caliper using the included shims until the gap is equal on both sides, then fully torque the caliper bolts to spec.
- Install the BP-10 brake pads and secure with the retaining pins and cotter pins.
- Install a disc brake compatible master cylinder and proportioning valve if converting from drum, then add the Wilwood 220-7056 brake line kit, bleed the system thoroughly, and check for leaks before road testing.
Why buy from Black Ops Auto Works
We are enthusiast owned and operated, and we ship authentic Wilwood Disc Brakes hardware sourced through authorized channels. Need help spec'ing a complete brake conversion with master cylinder, proportioning valve, lines, and supporting parts? Reach out before you order and we will help you build the right package for your classic.
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