Wilwood Drilled 15-Inch Front SX6R Conversion for Ford Mustang 2015–2023 and Listed Ridetech Falcon/Comet/Mustang/F-100 Applications, Black Calipers

Black SX6R calipers operate drilled-and-slotted 15-inch rotor rings through the dynamic lug-drive hat arrangement. This front package supplies the matched brackets, pads and Mustang-pattern flexible lines for the documented factory-hub or Ridetech-hub application. 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 for motorsport, street-performance and specialized applications. Its range includes calipers, brake rotors, master cylinders, valves, fittings and brake lines, with each part selected to match the complete brake system.

Technical Details

• Manufacturer part number — 140-14925-D.
• Service caliper assembly — SX6R; 6 pistons in each caliper; Stainless pistons; Forged Aluminium body; Radial mounting.
• Supplied pad compound — BP-10.
• Hat wheel-stud clearance diameter — 0.630 in; 16.00 mm.
• Rotor mounting hat — aluminum; Type III Anodize; hat offset 1.370 in; dynamic lug drive.
• Hydraulic package contents — brake lines included: Yes; master cylinder included: No; booster included: No.
• Brake function and supply — Front Brake Kits - Street Performance; Disc braking; front axle; Sold as a kit.
• Rotor construction and friction surface — Spec-37 Iron; Vented; SRP Drilled & Slotted; surface finish: Black Electro Coat.
• Caliper color, finish and hydraulic inlet — Black; Black Powder Coat; inlet 1/8-27 NPT.
• Wheel bolt circle — 5 x 4.5 in; 5 x 114.3 mm.
• Nominal minimum wheel diameter — 19 in; 482.6 mm; verify full spoke and barrel clearance using the kit drawing.
• Mechanical package contents — no separate hubs included; mounting hardware included: Yes; spindles included: No.
• Flexline specification — Line kit included (manufacturer): 220-13912 (14.00 in); Front line-kit reference: 220-13912.
• Rotor dimensions — outside diameter 15.00 in; 381 mm; thickness 1.25 in; 31.75 mm.

Fitment & Compatibility

Use the exact model, year and factory-versus-Ridetech suspension conditions below. The older Falcon, Comet, F-100 and Mustang entries require the specified hub spindle; the 2015–2023 Mustang entries use their documented factory arrangement. Check the included hose connections individually on a custom chassis.

Listed model families are Falcon, Comet, Mustang, F-100; the individual year and brake/spindle conditions remain decisive. Use the fitment table below to confirm year, model, trim and brake or suspension options.

Choose any alternative flexline for the actual route and chassis fittings, with enough travel and the correct flare connections.

With more than 20 years of parts experience, PMB Performance can help review the specified brake arrangement. Include the vehicle year and details of any hub, spindle or suspension changes.

Check the Installation instructions for the full assembly and wheel-clearance requirements.

Manufacturer Warning

Applicable to brake pads only. 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.