Wilwood front AERO6 kit components for GM K-Series/Blazer/Jimmy 6-Lug 4x4, red calipers and 14-inch gt slotted rotors
Wilwood front AERO6 assembly for GM K-Series/Blazer/Jimmy 6-Lug 4x4, red caliper and 14-inch gt slotted rotor
Wilwood front AERO6 kit components for GM K-Series/Blazer/Jimmy 6-Lug 4x4, red calipers and 14-inch gt slotted rotors
Wilwood front AERO6 assembly for GM K-Series/Blazer/Jimmy 6-Lug 4x4, red caliper and 14-inch gt slotted rotor

Wilwood Front Red AERO6 GT Brake Package — 14-Inch Rotors, GM Six-Lug 4x4 (1971–1991)

SKU: 140-18156-R

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Product details

For a matching GM six-lug 4x4, this red AERO6 package supplies GT-slotted 14-inch front rotors and six-piston service calipers. Read the master-cylinder recommendations before installation, especially where the original rear drums remain. Bill Wood founded Wilwood Engineering in 1977; the company is based in Camarillo, California. Wilwood designs and manufactures calipers, brake rotors, master cylinders, valves, fittings and brake lines as part of its disc brake systems and component range for motorsport, street-performance and specialized applications. Each component must suit the requirements of the complete brake installation.

Technical Details

  • Manufacturer part number: 140-18156-R
  • Rotor specification: Spec-37 Iron, GT Slotted, vented; 14.00 x 1.25 inches
  • Caliper specification: 6-piston AERO6 in Red Powder Coat; radial mount
  • Included service pad compound: BP-10; Stainless pistons
  • Caliper body material: Forged aluminum
  • Hydraulic inlet: 1/8-27 NPT
  • Rotor/hat wheel-stud clearance pattern(s): 6 x 5.5 in; 6 x 139.7 mm; match the installed hub/axle pattern
  • Hydraulic brake hoses: not included; select the correct application-specific lines/fittings
  • Wheel clearance: 18-inch wheels may fit; verify the manufacturer’s complete caliper/rotor template for the installed wheel
  • Supplied as one kit with mounting hardware; spindles, hubs, master cylinder and booster are not included

Fitment & Compatibility

This 14-inch AERO6 front installation requires the specified GM six-lug 4x4 hub arrangement. Check the individual 1971–1991 Chevrolet/GMC K-series, Blazer/K5 Blazer, Jimmy and related Suburban rows; only the years shown for the particular model apply. Verify the full brake envelope within the wheel, even when its nominal diameter is 18 inches.

The manual calls for modification of the hub’s wheel-stud holes before brake assembly. A 15/16-inch master-cylinder bore is recommended with the original pedal and vacuum booster; avoid the OE 1.12-inch bore because Wilwood warns of very high effort. Retaining rear drums also calls for the recommended rear-circuit 10-pound residual and proportioning valves. Choose the required hydraulic hose set for the vehicle.

The table below provides the full application breakdown; match its year, model and brake-configuration details.

Manufacturer Resources

WARNING: This product can expose you to chemicals including Arsenic, Cadmium, Chromium (Hexavalent compounds), Lead, Nickel, Cobalt and Antimony Trioxide which are known to the State of California to cause cancer or other reproductive harm. For more information go to www.p65warnings.ca.gov.

With over 20 years of parts and fitment experience, PMB Performance can help review the intended brake installation. Provide your VIN, wheel measurements and any modified axle or spindle details when asking about compatibility.

Vehicle Applications

Years Make Model Model option Front brakes Rear brakes Kit application Notes
1971-1974, 1987-1991 Chevrolet Blazer 4 x 4 Disc Drum Front Kit 1, 2, 3, 4, 5
1971-1991 GMC Jimmy 4 x 4 Disc Drum Front Kit 1, 2, 3, 4, 5
1971-1974 GMC K15/K1500 Pickup 4 x 4 Disc Drum Front Kit 1, 2, 3, 4, 5
1971-1974 GMC K15/K1500 Suburban 4 x 4 Disc Drum Front Kit 1, 2, 3, 4, 5
1975-1986 Chevrolet K10 4 x 4 Disc Drum Front Kit 1, 2, 3, 4, 5
1975-1986 Chevrolet K10 Suburban 4 x 4 Disc Drum Front Kit 1, 2, 3, 4, 5
1975-1986 Chevrolet K5 Blazer 4 x 4 Disc Drum Front Kit 1, 2, 3, 4, 5
1975-1978 GMC K15 4 x 4 Disc Drum Front Kit 1, 2, 3, 4, 5
1975-1978 GMC K15 Suburban 4 x 4 Disc Drum Front Kit 1, 2, 3, 4, 5
1979-1986 GMC K1500 4 x 4 Disc Drum Front Kit 1, 2, 3, 4, 5
1979 GMC K1500 Suburban 4 x 4 Disc Drum Front Kit 1, 2, 3, 4, 5
1980-1986 GMC K1500 Suburban 4 x 4 Disc Drum Front Kit 1, 2, 3, 4, 5

Application Notes

  1. Caution: A 15/16” bore master cylinder is recommended for proper brake function when installing this brake kit with the factory brake pedal and vacuum booster.
  2. Wilwood offers a 15/16” bore tandem master cylinder suitable for this application, p/n 260-18184
  3. Using the OE 1.12” bore master cylinder is not recommended and will require very high pedal effort to stop the vehicle.
  4. Line kit included (manufacturer): None
  5. Front line-kit reference: 220-18356