Fitment questions?
Call (855) 786-7101 or text (801) 304-3141. We check fitment by VIN.
Product details
Choose this anodized Wilwood Aero6-DM when replacing the right front caliper in the 2013–2018 Ram 1500 conversion. The 5.91-inch lug pattern is specific to the spindle arrangement, while six stainless pistons use a 1.75/1.62/1.62-inch differential bore sequence. The nominal 1.25-inch rotor-width designation belongs to the caliper's bridge configuration. Wilwood Engineering was founded by Bill Wood in 1977 and is based in Camarillo, California. The company designs and manufactures disc brake systems and components, including calipers, brake rotors, master cylinders, valves, fittings and brake lines for motorsport, street-performance and specialized applications.
Technical Details
- Manufacturer part number: 120-17591. Type: AeroDM Lug Mount caliper.
- 6-piston hydraulic layout with 1.75/1.62/1.62-inch bores and 6.52 sq in of effective area; piston type: stainless steel.
- Nominal rotor width 1.25 inch; compatible width range 1.10–1.25 inch. Rotor diameter specification: 12.19–13.56 inches.
- 5.91-inch-center lug attachment, right hand orientation. 0.52-inch holes.
- Hydraulic inlet thread: 1/8-27 NPT. Match the fitting thread and sealing arrangement to the brake hose.
- Type III Anodize finish on a forged aluminum body.
- Compatible pad profile 6617; confirm thickness and compound for the installation.
- Component: one individual hydraulic brake caliper. Select the mating rotor, pads, mounting hardware and line connection to suit the complete brake assembly.
- Piston dust boots: no.
- Caliper component weight: approximately 8.9 lb.
Fitment & Compatibility
Check the Ram 1500 2WD/4WD installation against the 13.38-inch Wilwood rotor and correct flexline assembly. Rotor hat offset and pad sweep must agree with the conversion, and the wheel needs clearance around the entire housing and the hose fitting.
PMB Performance has over 20 years of brake-component experience. Send the existing caliper identification, rotor measurements and mounting details for help comparing this configuration.