Wilwood 140-13181-DR Dynapro Lug Mount Rear Parking Brake Kit, Big Ford 2.5in

Vehicle Fitment

• Universal fit for vehicles using the "Big Ford, New Style" rear axle with 2.50 in. offset - including Chrysler 300, Cordoba, Fifth Avenue, Imperial, LeBaron, New Yorker, and other Mopar and muscle car platforms using this axle (factory or swapped)

Fitment Notes

• Confirm your rear axle matches the "Big Ford, New Style" housing with 2.50 in. offset before ordering, since this kit is engineered specifically for that axle rather than a broader range
• Designed to fit OE factory spindles for a clean, straightforward installation
• Includes an internal parking brake shoe system, making it a genuine parking brake replacement rather than requiring a separate solution
• Requires 15 in. or larger wheels
• Rear kit only - pair with a compatible Wilwood front kit for a complete brake system upgrade

Features

• Forged billet Dynapro Lug Mount four-piston calipers provide strong, balanced rear braking for street/strip and show vehicles
• Red powder-coat caliper finish for a distinctive performance look
• 12.19 in. one-piece rotor/drum design combines the rotor and integrated parking brake drum in a single component
• Drilled and slotted rotor surface improves heat dissipation and reduces brake fade
• Neatly hidden internal parking brake shoe system provides a clean installation with strong static holding power
• Lug mount caliper design fits OE factory spindle locations for a clear-cut install
• High-friction brake pads included for optimized, balanced stopping performance

Specifications

• Caliper Type: Dynapro Lug Mount
• Caliper Material: Forged Billet Aluminum
• Caliper Finish: Red Powder Coat
• Piston Count: 4 (Four)
• Rotor Diameter: 12.19 in.
• Rotor Style: Drilled & Slotted
• Rotor/Drum Design: One-Piece Disc/Drum Integral
• Parking Brake: Internal Shoe System
• Mount Type: Lug Mount
• Axle Compatibility: Big Ford, New Style, 2.50 in. Offset
• Minimum Wheel Diameter: 15 in.
• Position: Rear Axle

Included Components

• 2x Dynapro Lug Mount Caliper (LH/RH), Red Powder Coat
• 2x One-Piece Disc/Drum Rotor, Drilled & Slotted, 12.19 in.
• Internal Parking Brake Shoe Components
• High-Friction Brake Pads
• Axle Mounting Hardware

Product Description

The Wilwood 140-13181-DR is a Dynapro Lug Mount rear parking brake kit engineered specifically for the "Big Ford, New Style" rear axle with 2.50-inch offset - a popular swap axle and factory fitment found across a range of Mopar and muscle car platforms, including several Chrysler models. Finished in red powder coat, the four-piston forged billet aluminum calipers deliver a meaningful upgrade in rear stopping power over factory drum brakes.

Paired with 12.19-inch one-piece rotors featuring a drilled and slotted surface, this kit improves heat dissipation and reduces brake fade compared to stock equipment. The lug mount caliper design is built to fit OE factory spindle locations, keeping installation straightforward. Because it includes an internal drum parking brake integrated directly into the rotor assembly, it functions as a genuine parking brake replacement - an important detail for anyone converting from factory rear drums to rear discs.

This kit includes all necessary hardware and high-friction brake pads for a complete, ready-to-install rear brake upgrade. It requires 15-inch or larger wheels, and since fitment depends on your specific rear axle matching the "Big Ford, New Style" housing and 2.50-inch offset, confirm those measurements on your vehicle before ordering.