Wilwood Forged Dynalite Big Brake FDLI Pro-Series Rear Kit, Drilled Rotor for Big Ford New Style 2.50" Offset

The Wilwood Forged Dynalite FDLI Pro-Series Rear Big Brake Kit (Part #140-2118-BD) is designed for Big Bearing Ford (New Style) rear axles with a 2.50-inch offset, providing a modern upgrade to replace factory drum brakes. This kit features 12.19-inch drilled and vented rotors (0.81-inch thick) paired with forged Dynalite four-piston brake calipers, available in black or polished finishes. The rotor hat hardware is secured with safety wire, and fasteners are treated with red Loctite® 271 for a secure, reliable installation.

The kit includes calipers, two-piece rotors, caliper mounting brackets, bolts, washers, shims, and other required hardware. Hydraulic lines, fittings, and parking brake components are not included and may be required depending on your vehicle's application. This direct-fit system delivers better braking performance and consistent stopping power without unnecessary complexity.

KEY SPECIFICATIONS

- Rotor Size: 12.19 inches diameter x 0.81 inches thick
- Bolt Circle: 8 lug, 7.62-inch pattern
- Caliper Inlet Fitting: 1/8-27 NPT
- Minimum Wheel Clearance: 0.080 inches
- Offset: 2.50 inches
- Hardware: High-strength bolts, washers, and shims with red Loctite® 271 application

These details help ensure that the kit matches your vehicle’s braking needs while being engineered for performance and durability.

INSTALLATION OVERVIEW

Installation of this kit is meant for those familiar with rear brake systems. The process involves:
- Removing existing brake components, including drums and outdated hardware.
- Cleaning and preparing the axle flange by removing burrs and dings.
- Installing the new rotor (or rotor and hat assembly) with proper alignment using shims for centring.
- Mounting the forged Dynalite callipers over the rotor, ensuring that all bolts are torqued to spec with red Loctite® 271.
- Using safety wire on rotor hat bolts and calliper mounts.
- Routing brake lines carefully to avoid interference during suspension and steering movement. - Following these clear steps helps achieve proper brake bleeding and reliable performance once installed.

FITMENT AND COMPATIBILITY

This kit is designed for Big Bearing Ford (New Style) rear axle flanges with a 2.50-inch offset. Confirm that the axle flange stud size and pattern are compatible with your vehicle. Some applications may require minor machining of the rotor hats for proper fitment. Ensure your wheels provide at least 0.080 inches of clearance from the calliper in all areas. Hydraulic lines, fittings, and parking brake hardware are not included and should be sourced based on your vehicle’s requirements.