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

Wilwood Front AERO6 Brakes for GM Six-Lug 4x4 (1971–1991), Black 14-Inch GT & BP-10 Pads

SKU: 140-18156

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Fitment questions?

Call (855) 786-7101 or text (801) 304-3141. We check fitment by VIN.

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Product details

Black AERO6 calipers and GT-slotted 14-inch Spec-37 rotors form this six-lug GM 4x4 front package. The six-piston calipers use BP-10 pads, and the 1.25-inch rotor thickness must be included in wheel and component-clearance planning. Based in Camarillo, California, Wilwood Engineering has designed and manufactured disc brake systems and components since Bill Wood founded the company in 1977. Its work spans motorsport, street-performance and specialized applications, with a product range covering master cylinders, calipers, brake rotors, valves, fittings and brake lines. These parts must be chosen for the requirements of the entire brake system.

Technical Details

  • Manufacturer part number: 140-18156
  • Service calipers: AERO6; 6 pistons; radial mount; Black Powder Coat
  • Brake rotors: 14.00 x 1.25 inches; Spec-37 Iron; GT Slotted; vented construction
  • Pads: BP-10; piston material: Stainless
  • 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.

Use the fitment table below to confirm the exact year, model, trim and installation notes.

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.

Ask PMB Performance to help confirm the configuration before ordering if the vehicle has modified brakes or running gear. We have over 20 years of experience with parts and fitment; a VIN plus the installed component details gives us the best starting point.

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