The unsurpassed braking capacity of the Forged Narrow Superlite 4R four-piston caliper serves as the base of this 12.19” big rotor kit for the popular 1963 thru 1987 Chevrolet & GM C10 / C15 Trucks with Wilwood's new Modular Drop Pro Spindles. SL4 kits are engineered application specific for simplified installation and full compatibility with OE master cylinder output and ABS functions where used. Big brake kits provide increased brake capacity and complimentary style with wheel, tire, and suspension upgrades. Optional caliper finishes and rotor designs simplify personalizing the style and braking requirements of any application.

Braided stainless hose kit is included.  You must specify 14" or 22" hose kit when ordering.

Minimum wheel diameter - 16"

Requires Wilwood Pro Drop Spindle Kits to fit.  Will not fit original equipment spindles.  For 1963-70 models, click here.  For 1971-87 models click here.

Calipers

• Finish color: Red Powder Coat
• Type: Forged Narrow Superlite 4R
• Piston count: 4
• Piston area (In): 4.80
• Piston type: Stainless
• Mount type: Radial
• Brake pad area (In²): 8.2
• Brake pad volume (In²): 3.8

Rotors

• Style: GT Slotted
• Surface finish: Plain
• Material: Iron
• Outside diameter (in): 12.19
• Width (in): 1.1
• Vane count: 32 V

Rotor Hats

• Type: Drag Hat - Shallow Offset
• Material: Aluminum
• Finish Color: Black E-Coat
• Hat Offset (in): 1.53
• Bolt Circle 1: 5 x 4.75
• Bolt Circle 2: 5 x 5.00
• Stud Diameter (BC 1): 0.52
• Stud Diameter (BC 2): 0.52

Product Series

Wilwood Forged Narrow Superlite Big Brake Front Disc Brake Conversion Kit