Wilwood Rear Drilled 14-Inch Brake Package for Jeep JK, Black Four-Piston Superlite Calipers — Selected 2007–2018 Applications

Black Superlite 4R calipers are paired with drilled-and-slotted 14.00 by 0.81-inch rotors in this rear kit. The increased rotor envelope must clear the wheel while the hat registers on the original Jeep JK hub. Wilwood Engineering’s work covers the design and manufacture of disc brake systems for motorsport, street-performance and specialized applications. Bill Wood founded the company in 1977 in a business now based in Camarillo, California. Its calipers, master cylinders, brake rotors, brake lines, valves and fittings must be selected around the complete system.

Technical Details

• Manufacturer: Wilwood
• Manufacturer part number: 140-14066-D
• Kit classification: Rear Brake Kits - Street Performance
• Axle position: Rear Kits
• Brake Type: Disc; Parking
• Selling unit: Sold as a kit.
• Minimum wheel guidance (clearance drawing required): 18 in; 457.2 mm
• Required rear axle / flange: OEM
• Catalog axle-offset reference: 0.00 in; 0 mm
• Spindle Included: No
• Mounting Hardware Included: Yes
• Separate wheel hubs included: No
• Rotor Outside Diameter: 14.00 in; 355.6 mm
• Rotor Thickness: 0.81 in; 20.57 mm
• Rotor Material: Iron
• Surface Type: SRP Drilled & Slotted
• Rotor construction: Vented
• Bolt Circle Diameter: 5 x 5 in; 5 x 127 mm
• Catalog stud / mounting-hole reference: 0.660 in; 16.76 mm
• Rotor surface finish: Black Electro Coat
• Hat material: Iron
• Hat finish: Black E-Coat
• Hat offset dimension: 2.200 in
• Pistons per service caliper: 4
• Service-caliper piston construction: Stainless
• Service-caliper mount: Radial
• Caliper body construction: Forged aluminum
• Caliper Color: Black
• Caliper Finish: Black Powder Coat
• Caliper Inlet Port Diameter: 1/8-27 NPT
• Caliper family: Superlite 4R
• Pad compound: BP-20
• Master Cylinder Included: No
• Brake Booster Included: No
• Brake Lines Included: Yes

Fitment & Compatibility

Use only the specified Jeep JK rear hub and matching original parking-brake hardware, including the separate 2018 Wrangler JK application rather than JL. The 14-inch rotor package requires more wheel space than the 12.88-inch version. DS-1097 includes rear flexlines 220-13968 and mounting brackets; inspect routing, hub registration and the parking-shoe adjustment during installation.

Listed models: Wrangler; Wrangler JK. Use the fitment table below for the individual years, submodels and equipment conditions.

Wilwood product specifications · Installation instructions

PMB Performance brings over 20 years of experience to brake-component selection. Provide the actual hardware specification when the brake system has been modified.