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Wilwood  |  SKU: WIL140-9407-R
11% off

Wilwood AERO4 RearTruck Kit 14.25in Red 1999-2018 GM 1500-SUV 1 Piston OE Caliper

Sale price USD 2,51554 Regular price USD 2,81741

Can I pick up my order or have it installed at your shop?

Absolutely. We offer local pickup on most products and full professional installation at our shop in Washington, MO. Whether you just want to grab your parts or have our techs handle the install, we’ve got you covered. Give us a quick call at 636-429-7020 or message us to schedule a visit — we’ll make sure the parts are ready when you arrive.

How do I know if this part fits my vehicle?

Unsure if it’ll fit? No problem — that’s what we’re here for. Send us your vehicle’s year, make, and model, and we’ll verify fitment before you order. We can also point you toward compatible upgrades or supporting parts if needed.

What if I need to return a product or it’s defective?

Most unused items can be returned within 30 days in their original packaging. Some products are covered by a manufacturer’s warranty as well. If something arrives damaged or doesn’t meet your expectations, just let us know — we’ll help you get it replaced, refunded, or repaired. (Tracking updates are also emailed automatically once your order ships.)

What's the lead time on custom or fabricated parts?

Many of our parts are built to order — especially fabricated or performance components. These can take additional time to produce before shipping. Lead times vary by manufacturer and demand, but we’ll always keep you updated along the way. If you’re working on a tight schedule, reach out before ordering at 636-429-7020 and we’ll confirm current availability or estimated ship dates.

Description

Upgrade your truck's stopping power with the Wilwood AERO4 Big Brake Truck Rear Brake Kit. Designed to replace the factory rear disc brakes while retaining the OE parking brake assembly, this performance brake kit delivers increased braking capacity, improved durability, and aggressive styling for trucks and SUVs equipped with larger wheels, tires, suspension upgrades, or increased towing demands.

Why Choose the Wilwood AERO4 Big Brake Truck Rear Brake Kit?

  • Increased Rear Braking Performance – Replaces the factory rear disc brakes with a high-capacity braking system.
  • AERO4 Performance Calipers – Engineered to provide consistent stopping power and dependable performance.
  • BP-20 Brake Pads – High-performance pad compound delivers reliable braking and durability.
  • Oversized Brake Rotors – Larger rotors improve heat management and braking performance under demanding conditions.
  • Maintains Factory Brake Balance – Designed to match OE master cylinder output, ABS operation, and factory brake bias.
  • Retains OE Parking Brake – Uses the original equipment parking brake assembly for added convenience.
  • Perfect for Heavy-Duty Applications – Ideal for lifted trucks, tow rigs, customized builds, and high-GVW vehicles.
Kit Includes
  • Wilwood AERO4 rear brake calipers
  • BP-20 brake pads
  • Oversized rear brake rotors
  • Installation hardware (application dependent)
Installation Highlights

This rear brake kit is engineered as a direct replacement for the factory rear disc brakes while utilizing the OE parking brake assembly. It is specifically designed to integrate with the factory master cylinder, ABS system, and vehicle brake bias.

Key Features at a Glance
  • AERO4 Calipers - High-capacity braking performance for demanding applications.
  • Oversized Rotors - Improved heat dissipation and braking consistency.
  • BP-20 Brake Pads - Performance friction compound for dependable stopping power.
  • Factory System Compatibility - Designed to work with OE master cylinder output and ABS.
  • Retains OE Parking Brake - Maintains factory parking brake functionality.
  • Built for Heavy-Duty Use - Excellent choice for towing, lifted trucks, and high-GVW applications.
Notes
  • Designed for vehicles originally equipped with rear disc brakes.
  • Retains the factory parking brake assembly.
  • Intended to complement Wilwood front big brake upgrades.
  • MPN varies by vehicle application.
Questions? We’re Here to Help.

Have questions about upgrades for your truck? Contact FASS Motorsports and we’ll get you dialed:

Phone: 636-429-7020

Email: info@fassmotorsports.com