Wilwood Front 14-Inch GT Brake Kit for Jeep Wrangler/Wrangler JK (2007–2018), Black Six-Piston

This Wilwood front conversion pairs black Superlite 6R calipers with 14-inch GT slotted rotors for the listed Jeep Wrangler JK configurations. The vented Spec-37 rings mount on separate hats over the original hubs, with BP-20 pads supplied for the selected combination. The kit changes the brake package while retaining the matching factory disc-spindle and hub arrangement. 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: 140-12440
• Type: Forged Narrow Superlite 6R Big Brake Front Brake Kit (Hat)
• Calipers: Forged Narrow Superlite 6R; 6 pistons per caliper; Black Powder Coat.
• Caliper bore sizes: 1.75, 1.25, 1.25 inches. Piston type: Stainless.
• Included pad compound: BP-20.
• Rotors: 14.00-inch diameter × 1.25-inch thickness; GT Slotted; Spec-37 Iron; Black Electro Coat surface; 72 curved vanes.
• Wheel bolt circles: 5 x 5.00 inches.
• Included: paired calipers, pads, rotors, mounting brackets and assembly hardware, rotor hats.
• Hydraulic lines and fittings selected separately. No master cylinder, booster or spindles are supplied.
• Conditional wheel screening size: 18 inches. Use the installation clearance diagram to verify the actual barrel and spoke profile.

Fitment & Compatibility

Verify Wrangler versus Wrangler JK model-year entries and the listed left/right-hand-drive or trim conditions. DS893 shows the original hub mounting and caliper bracket location. Check stud pattern and hat seating, then compare the 18-inch screening envelope with the chosen wheel's actual spokes and barrel. Hydraulic hoses are separate; lifted suspensions require suitable hose travel and routing rather than assumptions based on stock ride height.

Match the individual model, year, submodel and brake configuration in the fitment table below.

Wilwood installation documents: Installation instructions.

PMB Performance has over 20 years of brake-system experience. Contact us with your vehicle details and installed brake hardware for help confirming the correct arrangement.

California Proposition 65 warning, 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.