Wilwood Forged Dynalite Big Brake FDLI Front Kit,12.19" for 1980-87 GM "G" Body

The Wilwood Forged Dynalite FDLI Front Big Brake Kit (part #140-12297) is designed for 1980–1987 GM “G” Body vehicles, offering a better performance front brake upgrade for factory disc spindles. This kit includes forged Dynalite four-piston brake calipers and large 12.19" vented, drilled and slotted rotors for improved stopping power and heat dissipation. The kit is designed for use with non-ABS applications and accommodates most 15" or larger wheels (verify clearance before purchase).

KEY SPECIFICATIONS

- A 12.19" diameter vented rotor that helps manage heat during heavy braking.
- Forged Dynalite calipers known for strength and consistent performance.
- High-performance Wilwood brake pads that work to deliver reliable stopping power.
- Hub assemblies with studs designed to accommodate 5x4.50 or 5x4.75 lug patterns.
- Optional drilled and slotted rotor variations available for enhanced performance.

INSTALLATION OVERVIEW

Installing this kit requires modifications to the stock steering arm and spindle. The process includes drilling and tapping holes and removing two “ears” from the steering arm to ensure proper calliper bracket fitment. Use only the recommended hardware and fasteners, apply Loctite where specified, and follow all torque specifications. OEM brake lines are not compatible with Wilwood callipers, so a proper steel braided flex line kit must be used.

FITMENT AND COMPATIBILITY

This kit is specifically designed for 1980–1987 GM “G” body cars equipped with disc brakes and disc spindles. Modifications to the steering arm and spindle are required, so it is essential to confirm your vehicle’s wheel clearance and hub stud pattern to ensure compatibility with your wheels. In some cases, a steel spacer may be necessary if the wheel contact surface overhangs the hub face. Always verify your vehicle’s specifications and fitment requirements before installation.