Wilwood rear Forged Narrow Superlite 4R kit components for Jeep Gladiator JT, black calipers and 13.5-inch gt slotted rotors
Wilwood rear Forged Narrow Superlite 4R assembly for Jeep Gladiator JT, black caliper and 13.5-inch gt slotted rotor
Wilwood rear Forged Narrow Superlite 4R kit components for Jeep Gladiator JT, black calipers and 13.5-inch gt slotted rotors
Wilwood rear Forged Narrow Superlite 4R assembly for Jeep Gladiator JT, black caliper and 13.5-inch gt slotted rotor

Wilwood Rear Gladiator JT GT Brake Package (2020–2021), Black Superlite with 13.50-Inch Rotors

SKU: 140-18076

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Product details

Wilwood’s black FNSL4R Gladiator rear kit combines 13.50-inch GT-slotted rotors with BP-22 pads and four-piston calipers. It is configured for the listed JT applications and retains their original parking-brake mechanism. Bill Wood founded Wilwood Engineering in 1977; the company is based in Camarillo, California. Wilwood designs and manufactures calipers, brake rotors, master cylinders, valves, fittings and brake lines as part of its disc brake systems and component range for motorsport, street-performance and specialized applications. Each component must suit the requirements of the complete brake installation.

Technical Details

  • Manufacturer part number: 140-18076
  • Service calipers: Forged Narrow Superlite 4R; 4 pistons; radial mount; Black Powder Coat
  • Brake rotors: 13.50 x 0.81 inches; Iron; GT Slotted; vented construction
  • Pads: BP-22; piston material: Stainless
  • Caliper body material: Forged aluminum
  • Hydraulic inlet: 1/8-27 NPT
  • Rotor/hat wheel-stud clearance pattern(s): 5 x 5 in; 5 x 127 mm; match the installed hub/axle pattern
  • Parking arrangement: retain the original parking-brake assembly
  • Hydraulic brake hoses: included; DOT-approved hose kit
  • Wheel clearance: 17-inch wheels may fit; verify the manufacturer’s complete caliper/rotor template for the installed wheel
  • Supplied as one kit with mounting hardware; spindles, hubs, master cylinder and booster are not included

Fitment & Compatibility

For the 2020–2021 Gladiator JT applications specifically listed below, including year-dependent Sport, Sport S, Overland, Rubicon, High Altitude and Willys versions. Confirm the OE parking-brake configuration and 5 x 5-inch wheel pattern.

The original dust shields require modification using the layout in DS1639. Supplied 20-inch hoses must be routed and checked at the suspension’s full range of movement.

Use the fitment table below to confirm the exact year, model, trim and installation notes.

Manufacturer Resources

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.

For fitment help, contact PMB Performance with your VIN and details of any axle, spindle or brake changes. Our team has over 20 years of experience checking parts and fitment, including the dimensions that a model-year search cannot establish.

Vehicle Applications

Years Make Model Submodel Model option Front brakes Rear brakes Kit application Notes
2020-2021 Jeep Gladiator Overland Overland Disc Disc Rear Kit 1, 2
2020-2021 Jeep Gladiator Rubicon Rubicon Disc Disc Rear Kit 1, 2
2020-2021 Jeep Gladiator Sport Sport Disc Disc Rear Kit 1, 2
2021 Jeep Gladiator High Altitude High Altitude Disc Disc Rear Kit 1, 2
2021 Jeep Gladiator Sport S Sport S Disc Disc Rear Kit 1, 2
2021 Jeep Gladiator Willys Willys Disc Disc Rear Kit 1, 2
2021 Jeep Gladiator Willys Sport Willys Sport Disc Disc Rear Kit 1, 2

Application Notes

  1. Line kit included (manufacturer): 220-16180 (20.00 in)
  2. Rear line-kit reference: 220-16180