Wilwood 140-13866-R Narrow Superlite 6R Rear Big Brake Kit for 12-18 F-150 6-Lug

Vehicle Fitment

• 2012-2018 Ford F-150 (6-Lug, Manual Parking Brake -- All Trims Including Raptor)

Fitment Notes

• Rear axle only -- complete rear kit
• 6-lug bolt circle only -- does not fit 7-lug F-150 variants
• Manual parking brake required -- does not fit F-150 with electric parking brake
• Retains OE parking brake, master cylinder output, and ABS
• Raptor: brake line kit 220-15277 required (sold separately)
• Standard F-150: brake line kit 220-15276 required (sold separately)
• Minimum wheel diameter: 18"
• Verify wheel clearance using Wilwood's wheel clearance diagram before ordering

Features

• Forged Narrow Superlite 6R calipers -- 6-piston, red powder coat
• Radial caliper mount -- bolts to OE axle flange location
• Stainless steel pistons -- heat resistant, corrosion proof
• BP-20 SmartPad compound -- high-performance street/tow/strip
• 14.25" GT 72 curved vane slotted rotors -- dynamically balanced
• Spec-37 iron rotor material -- high carbon content for superior fade resistance
• Black electro coat rotor finish
• Parking brake hat -- iron, black e-coat, 6x5.32" bolt circle
• Retains OE parking brake mechanism
• Complements 14.25"+ front brake upgrades -- designed as matching rear system
• Manufactured in Camarillo, California, USA

Specifications

• Kit type: Forged Narrow Superlite 6R Big Brake Rear Kit
• Position: Rear
• Caliper: Forged Narrow Superlite 6R -- 6 piston, red powder coat
• Piston bores: 1.62" / 1.12" / 1.12"
• Piston area: 4.04 in²
• Piston type: Stainless steel
• Pad compound: BP-20
• Pad plate: 7416
• Pad area: 8.2 in²
• Rotor diameter: 14.25"
• Rotor width: 1.25"
• Rotor style: GT slotted, black electro coat
• Rotor material: Spec-37 iron
• Vane count: 72 curved
• Dynamically balanced: Yes
• Hat bolt circle: 6 x 5.32"
• Hat offset: 2.000"
• Minimum wheel diameter: 18"
• UPC: 889545071337

Included Components

• 2x Forged Narrow Superlite 6R calipers (red powder coat)
• 2x 14.25" GT slotted rotors (Spec-37 iron, black electro coat)
• 2x Parking brake hats (iron, black e-coat)
• BP-20 SmartPad brake pads (pad plate 7416)
• Radial caliper mount brackets
• Mounting hardware

Product Description

The Wilwood 140-13866-R is a Forged Narrow Superlite 6R Big Brake Rear Kit for the 2012-2018 Ford F-150 with manual parking brake and 6-lug bolt pattern. The kit is engineered to retain the factory parking brake mechanism, OE master cylinder output, and ABS -- it bolts to the OE axle flange without modification and integrates fully with the truck's stock brake system as a direct upgrade in caliper, rotor, and pad capacity.

The Forged Narrow Superlite 6R calipers combine three stainless steel piston bores (1.62" / 1.12" / 1.12") with a radial mount design to deliver 4.04 in² of piston area against 14.25" Spec-37 iron GT slotted rotors -- a substantial step up from the stock rear setup, and designed to complement a matching 14.25"+ front brake upgrade. The 72-vane curved rotor design is dynamically balanced for smooth high-speed operation. BP-20 SmartPad compound handles street, towing, and performance driving across a wide temperature range. Does not fit 7-lug F-150 variants or any F-150 equipped with an electric parking brake. Raptor models require brake line kit 220-15277; standard models require 220-15276 -- both sold separately. Minimum 18" wheels required. Manufactured in Camarillo, California.