Wilwood Rear Brake Kit with Black Four-Piston Calipers and Drilled 14-Inch Rotors for Jeep Gladiator JT (2020–2021), Includes Lines

Jeep Gladiator JT rear conversion combines drilled and slotted rotors with black four-piston calipers. Check dust-shield trimming and wheel clearance. Bill Wood founded Wilwood Engineering in 1977 in Camarillo, California, where the company is based. Wilwood designs and manufactures disc brake systems, producing brake rotors, calipers, master cylinders, fittings, valves and brake lines for motorsport, street-performance and specialized applications. Individual parts are selected to meet the requirements of the complete braking system.

Technical Details

• Rotor dimensions, construction and face: 14.00 × 0.81 inches; Iron; vented; SRP Drilled & Slotted
• Rotor / hub bolt-circle specification: 5 x 5 in; 5 x 127 mm
• Nominal wheel diameter reference: 18 in; verify the complete clearance drawing
• Hydraulic caliper specification: 4-piston Forged Narrow Superlite 4R; Black Powder Coat
• Supplied service-pad compound: BP-20
• Mounting and piston details: Radial; piston material: stainless steel
• Hydraulic inlet: 1/8-27 NPT
• Hose provision: Included; 220-16180 (20.00 in)
• Hardware supplied: mounting hardware
• Components to provide separately: spindles, wheel hubs, master cylinder, brake booster
• Manufacturer part number: 140-16179-D
• Kit function: Rear Brake Kits - Street Performance; rear position
• Quantity: Sold as a kit.

Fitment & Compatibility

The listed 2020–2021 Jeep Gladiator JT applications retain the original internal parking brake arrangement. Check the Overland, Rubicon, Sport and listed 2021 trim rows individually rather than applying an open-ended year claim. DS-1393 requires the rear dust shield to be cut for rotor clearance; have that work performed by a competent installer. The included 20-inch braided flexlines must clear moving suspension and wheel parts throughout travel. The original hub is reused. Check the actual wheel shape with the manufacturer diagram; an 18-inch nominal diameter alone is insufficient.

Use the fitment table below to check each listed year, model and brake configuration alongside these installation requirements.

Wilwood product specifications · Installation instructions

PMB Performance has more than 20 years of parts and fitment experience. Provide the model, year, installed spindle or hub, existing brake package and wheel measurements so we can help check the complete conversion.

Manufacturer warning — brake pads only: WARNING: Cancer and Reproductive Harm. www.P65Warnings.ca.gov.