Fitment questions?
Call (855) 786-7101 or text (801) 304-3141. We check fitment by VIN.
Product details
The left-hand AERO6/ST is configured with six insulated Thermlock pistons and type 6620 pads. A 1.62/1.12/1.12-inch differential bore layout sits within its Type III anodized forged housing. This component comes from Wilwood Engineering, established in 1977 by Bill Wood and based in Camarillo, California. Its disc brake design and manufacturing work includes calipers, brake rotors, master cylinders, valves, fittings and brake lines for motorsport, street-performance and specialized systems.
Technical Details
- Manufacturer part number: 120-13300. Component: Aero6 Radial Mount caliper.
- Supply: one brake caliper, not a complete axle brake kit. Match the mating rotor, pads, bracket and connection hardware to the installation.
- Bore configuration 1.62/1.12/1.12 inches across 6 pistons; piston material: Thermlock. Hydraulic effective area: 4.04 square inches.
- Bracket interface: 7.09-inch radial centers with 0.45-inch holes. Specified mount height: 2.09 inches; orientation: left hand.
- Caliper weight: approximately 7.1 lb.
- Construction and surface: forged aluminum housing finished in Type III anodize.
- Hydraulic inlet thread: 1/8-27 NPT. Use a fitting with the correct thread and sealing seat.
- Pad fit is type 6620. Match the pad dimensions and compound to the rotor and intended braking conditions.
- Nominal rotor width 1.25 inch; compatible outside diameter from 12.19 through 15.00 inches. Specified rotor-width limits: 1.10–1.28 inch.
- Piston dust boots: not fitted.
Fitment & Compatibility
Check left-side caliper placement together with the intended rotor rotation. The bracket must suit 7.09-inch radial mounting and position the pads correctly over a rotor 1.10–1.28 inches wide.
For a replacement or custom installation, send PMB Performance the brake dimensions and existing component identification. Our 20+ years of experience can help narrow down the correct combination.
