Ford Mustang (S550) Upgraded with TTSPORT Evolution ES4 & Classic 8657S Big Brake Kit
The Ford Mustang is an icon of V8 torque and rear-wheel-drive theatrics. However, whether you drive an S550 or the newer S650, physics is undeniable: these are heavy, fast cars. If you have ever pushed your Mustang on a backroad or a track day, you have likely found the mechanical weak link: the brakes.
The standard floating calipers found on many trims are designed for street comfort, not thermal endurance. When you combine a 3,700+ lb (1,678+ kg) chassis with repeated high-speed stops, the stock system gets overwhelmed. The result is brake fade—a terrifying "mushy" pedal feeling where the car simply refuses to stop.
The Solution: A Balanced System (That Keeps Your EPB)
Upgrading a Mustang isn't just about bolting on the biggest caliper you can find. It requires a complete, balanced ecosystem. Furthermore, modern Mustangs present a unique challenge: the Electric Parking Brake (EPB). Many aftermarket kits force you to disable this safety feature or leave an ugly, non-functional caliper hanging on the rear hub.
We engineered a no-compromise solution. Our kit provides massive thermal capacity while integrating flawlessly with the factory electronics.
- Front: Classic Series 8657S 6-Piston Calipers w/ 380mm (15.0") 2-Piece Rotors
- Rear: Evolution Series ES4 4-Piston Calipers w/ 380mm (15.0") 2-Piece Rotors & EPB Integration
Hardware Deep Dive
This package is a ground-up solution, including vehicle-specific mounting brackets, TTSPORT performance-grade brake pads, and stainless steel braided brake lines for immediate pedal response.
Front: Classic 8657S 6-Piston Caliper
The 8657S is our workhorse caliper. It is forged for maximum structural rigidity, eliminating the "flex" common in cast sliding calipers. This stiffness translates directly to the driver as a firm, communicative brake pedal.
Crucially, it features vented pistons and high-temperature seals. These components act as a thermal barrier, preventing track heat from boiling your brake fluid during extended sessions.
Rear: ES4 4-Piston Caliper (The Game Changer)
The rear setup is where this kit truly shines. The ES4 is not just a cosmetic upgrade to match the front; it is a functional necessity for brake bias. By utilizing a 4-piston fixed caliper, we improve rear braking stability under heavy load.
The EPB Solution: We utilize a specialized dedicated motor system that interfaces directly with the Mustang's factory wiring harness. You retain full functionality of your parking brake buttons and safety systems—no warning lights on the dash, no hacks.
Frequently Asked Questions: Mustang S550/S650
1. Does this kit really keep the Electric Parking Brake (EPB)?
Yes. Unlike many competitor kits that require you to disable the EPB or use a secondary spot caliper, the TTSPORT ES4 system integrates a dedicated electronic motor unit. It plugs into your factory harness and operates exactly like the stock system.
2. What wheel size do I need?
This kit utilizes massive 380mm (15.0") rotors front and rear. It is designed to fit behind most 19-inch wheels and larger. We strongly recommend downloading our fitment template to check barrel clearance and spoke clearance before ordering.
3. Will this affect my ABS or Traction Control?
No. We have calculated the total piston volume of the 8657S (Front) and ES4 (Rear) to match the hydraulic output of the Mustang’s master cylinder. This ensures that your ABS, Traction Control, and Stability Control systems function exactly as Ford intended.
Unlock Your Mustang's True Potential
Stop letting your brakes be the limiting factor. Experience fade-free performance and rock-solid pedal confidence with a complete TTSPORT system.