Chevy Bel Air 55-58 Front & Rear Wilwood Disc Brake Chrome Booster Conversion Kit

Pirate Jack 1955-1957 Chevy Full-Size Complete 4-Wheel Power Disc Brake Kit with Wilwood D52 Calipers, Chrome Booster & Polished Wilwood Oval Master

At a Glance

• ✔ Complete 4-wheel disc: front and rear disc brakes in one kit
• ✔ Power assist: 8" dual chrome booster with chrome angled brackets
• ✔ Wilwood D52 dual-piston front calipers and a Wilwood polished aluminum oval master cylinder
• ✔ 11" cross-drilled & slotted rotors, front and rear, 5 x 4.75" bolt pattern
• ✔ Rear calipers with built-in e-brake, plus e-brake cables
• ✔ Stainless braided hoses included with banjo bolts and copper crush washers
• ✔ Front brakes bolt to your stock drum brake spindles
• ✔ Every part is brand new. Nothing rebuilt or remanufactured.
• ✔ Free tech support: 866-601-4455

Your Tri-Five Chevy is a classic, but its original drum brakes belong in a museum. This complete Pirate Jack package replaces the drums at all four corners with 11" cross-drilled and slotted rotors, adds Wilwood D52 dual-piston calipers up front and e-brake rear calipers out back, and ties it all together with a Wilwood polished aluminum oval master cylinder and an 8" dual chrome power booster.

The front brakes bolt to your stock drum brake spindles. And unlike many kits, we include the stainless steel braided hoses, banjo bolts, and copper crush washers, so there's nothing extra to buy before you can finish the job.

What's Included

Front Disc Brake Components

• 11" Cross-Drilled & Slotted Rotors, 5 x 4.75" bolt pattern (pair)
• Wilwood D52 Dual-Piston Calipers, black, with MKD-52 pads (pair)
• Caliper Brackets (pair)
• Stainless Steel Braided Caliper Hoses with banjo bolts & copper crush washers (pair)
• Bearings, Seals, Dust Caps, Spindle Nuts, Spindle Washers & All Hardware

Rear Disc Brake Components (for GM 10-bolt or 12-bolt rear ends)

• Drilled & Slotted Rear Rotors (pair)
• Large GM Rear Calipers with Built-In E-Brake, black powder coated (pair)
• Rear Caliper Brackets (pair)
• E-Brake Cables
• Stainless Steel Braided Brake Hoses with banjo bolts & copper crush washers

Power Brake Components

• Wilwood Polished Aluminum Oval Master Cylinder, 1-1/8" bore
• 8" Dual Power Brake Booster, chrome
• Chrome Angled Booster Brackets
• Pedal Rod Extension & Clevis
• Adjustable Proportioning Valve

Wilwood D52 Front Caliper Specs

Wilwood has built performance and racing brakes since 1977. The D52's forged aluminum body and stainless pistons end the rust, bore pitting, and seal failures of single-piston OE calipers, with a big weight savings and high-temperature reliability for the street.

Wilwood Oval Master Cylinder Specs

Why Buy This Kit

• ✔ Front and rear discs in one box: no mixing and matching
• ✔ Wilwood quality where it counts: D52 front calipers and an oval master cylinder
• ✔ Show-quality chrome: chrome booster and brackets with a polished Wilwood master
• ✔ Working parking brake: rear calipers have a built-in e-brake, and cables are included
• ✔ Bolts to your stock drum brake spindles
• ✔ Braided stainless hoses included: many kits make you buy them separately
• ✔ Dial-in brake bias with the adjustable proportioning valve
• ✔ No proprietary parts: pads and rotors are easy to replace
• ✔ All new, nothing rebuilt or remanufactured

Fitment

Not recommended for Buick, Oldsmobile, or Pontiac. These cars are similar to Chevrolet but have differences that keep this kit from bolting on directly, and we can't advise on modifying it to fit.

Not sure about your car? Send us a message or call 866-601-4455 before ordering.

Before You Order: Please Read

Year, Make & Model Required
Please enter your car's year, make, and model in the notes section at checkout, or message us right after you purchase. We can't ship your order until we have these details.

Wheel Requirements
Requires 15" or larger wheels. Smaller wheels will have caliper clearance issues.

Rear End Requirement
The rear disc brake kit is designed for GM 10-bolt and 12-bolt fullsize Chevy rear ends.

Bolt Pattern
Rotors use a 5 x 4.75" bolt pattern.

⚠️ Installation Notes

• Wheel offset: Disc brake conversions typically add about 1/4" to 3/8" of track width per wheel compared to drums.
• Master cylinder: Bench bleed the master cylinder before installing it. Use fresh DOT 3 or DOT 4 brake fluid.
• Brake bias: Set your front-to-rear balance with the adjustable proportioning valve.
• E-brake: Adjust the e-brake cables after installation and confirm the parking brake holds.
• Test drive: Check for leaks and test the brakes at low speed in a safe area before driving.

Free Tech Support

Every order comes with free tech support before and after your purchase.

• Call: 866-601-4455
• Monday-Friday, 8:00 AM - 4:00 PM EST
• Limited weekend availability

We're happy to help make sure this kit is right for your Chevy.

Four-wheel discs. Wilwood upgrades. Show chrome. All new parts. Order your Tri-Five disc brake kit today!

Don't forget: add your year, make & model in the checkout notes. Questions? Call 866-601-4455