Wilwood Rear Brake Package with Red Superlite 4R Calipers and 14-Inch SRP Rotors for Jeep Wrangler JL with OE Parking Brake (Listed 2018–2025 Applications)

Red four-piston Superlite 4R calipers and 14.00-inch drilled/slotted rotors provide the rear service brakes for this listed Wrangler JL installation. The original parking brake remains functional, and the kit is specified for the original master-cylinder and ABS arrangements where used. Included braided hoses require proper routing through suspension travel. Wheel diameter must be supported by the actual clearance profile. Bill Wood founded Wilwood Engineering in 1977; the company is based in Camarillo, California. It designs and manufactures calipers, brake rotors, master cylinders, valves, fittings and brake lines for motorsport, street-performance and specialized applications. This kit is one configuration within that disc-brake-system range and must be matched to the vehicle build.

Technical Details

• Manufacturer part number: 140-15930-DR. Quantity: one kit for the stated axle/application.
• Rotor specification: 14.00-inch outside diameter × 0.81-inch thickness; SRP drilled & slotted faces. Iron construction; SRP Drilled Rotor design; published vane configuration: 36 V.
• Rotor hats: iron, black e-coat finish; Parking Brake Hat - Standard. Hat offset: 2.200 inch.
• Service caliper: Forged Narrow Superlite 4R; 4 pistons; stainless piston material. Radial mounting, red powder coat finish.
• Published piston bores: 1.38, 1.38 inches. Supplied pad compound: BP-20.
• Caliper hydraulic inlet: 1/8-27 NPT.
• No replacement wheel hubs are supplied; retain or provide the documented matching hub arrangement.
• Wheel mounting pattern: 5 x 5.00 inches.
• Rear housing interface: OEM; axle offset: 0.00 in; 0 mm.
• Minimum nominal wheel diameter: 18 inches. The wheel must also clear the actual caliper and rotor profile in the installation drawing.
• Uses the documented original parking-brake mechanism; this is not an electronic-parking conversion kit.
• Mounting hardware and the specified pads are included. Spindles, master cylinder and brake booster are not supplied.
• Included braided flexline kit: 220-15929 (25.00 in). Confirm the chassis fitting and routing for the actual installation.

Fitment & Compatibility

This rear kit is for the Wrangler JL entries in the table; it is not a Gladiator rear kit. Exact trim ranges differ, including the listed 4xe and special-edition applications. It retains the documented original parking-brake mechanism, master-cylinder output and ABS operation where fitted. Check the existing parking brake and hub arrangement, rear brake balance, flexline routing and 18-inch wheel clearance before installation. Use the complete application table below for the individual year, submodel, brake configuration and note attached to each entry.

For fitment assistance, send PMB Performance the vehicle details together with the installed spindle or axle configuration and wheel measurements. We draw on 20+ years of parts and fitment experience to help assess the combination.

Manufacturer documentation: Installation instructions.

Manufacturer Warning

Applicable to brake pads only: Wilwood warns of exposure to arsenic, cadmium, hexavalent chromium compounds, lead, nickel, cobalt and antimony trioxide, chemicals known to California to cause cancer or reproductive harm. More information: P65Warnings.ca.gov.