Wilwood Front Slotted 12.88-Inch Brake Package for Jeep Wrangler JK, Red Six-Piston Superlite Calipers — Selected 2007–2018 Applications

This red six-piston front conversion uses the GT-slotted rotor arrangement for the listed Jeep Wrangler and Wrangler JK. Each rotor measures 12.88 by 1.25 inches and attaches through an application-specific hat. Wilwood Engineering has designed and manufactured disc brake systems since Bill Wood founded it in 1977. Its Camarillo, California operation supplies calipers, master cylinders, brake rotors, valves, fittings and lines for specialized, street-performance and motorsport applications. Each component must be chosen to match the complete brake system.

Technical Details

• Manufacturer: Wilwood
• Manufacturer part number: 140-13880-R
• Kit classification: Front Brake Kits - Street Performance
• Axle position: Front Kits
• Brake Type: Disc
• Selling unit: Sold as a kit.
• Minimum wheel guidance (clearance drawing required): 17 in; 431.8 mm
• Spindle Included: No
• Mounting Hardware Included: Yes
• Separate wheel hubs included: No
• Pistons per service caliper: 6
• Service-caliper piston construction: Stainless
• Service-caliper mount: Radial
• Caliper body construction: Forged aluminum
• Caliper Color: Red
• Caliper Finish: Red Powder Coat
• Caliper Inlet Port Diameter: 1/8-27 NPT
• Caliper family: Superlite 6R
• Pad compound: BP-20
• Master Cylinder Included: No
• Brake Booster Included: No
• Brake Lines Included: No
• Rotor Outside Diameter: 12.88 in; 327.15 mm
• Rotor Thickness: 1.25 in; 31.75 mm
• Rotor Material: Spec-37 Iron
• Surface Type: GT Slotted
• Rotor construction: Vented
• Bolt Circle Diameter: 5 x 5 in; 5 x 127 mm
• Catalog stud / mounting-hole reference: 0.520 in; 13.21 mm
• Rotor surface finish: Black Electro Coat
• Hat material: Aluminum
• Hat finish: Black E-Coat
• Hat offset dimension: 0.850 in

Fitment & Compatibility

Use the listed 2007–2017 Wrangler or 2018 Wrangler JK application; the 2018 JK entry must not be extended to the newer JL platform. Confirm the original front hub and five-lug pattern, then use the wheel drawing rather than rim diameter alone. Front flexline kit 220-11237 is specified separately; the kit is designed around the qualifying OE master-cylinder output and ABS function.

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

Wilwood product specifications · Installation instructions

Ask PMB Performance for help comparing the installation requirements. We have more than 20 years of experience working with brake parts and fitment.