Mercedes-Benz E300 Big Brake Kit Upgrade / TTSPORT Classic 8657

The factory brakes on a Mercedes-Benz E300 are fine for daily driving, but under a heavier right foot the pedal starts to feel soft and the front end loses bite well before it should. This case swaps in a TTSPORT TT8657 six-piston caliper kit with 380mm Dacromet-coated curved-slot rotors — a straightforward OEM+ upgrade that fits behind the car's factory 19-inch wheels.

The owner's goal was more usable stopping power and a firmer pedal without touching wheel fitment. The TT8657 caliper and 380mm rotor combination was chosen specifically because it clears the E300's stock 19-inch wheels with no spacers needed.

Vehicle & Kit Specs

Why It Works

Going from a stock caliper to the TT8657's fixed six-piston design spreads clamping force evenly across a larger pad, which cuts down on the flex that makes a stock brake pedal feel mushy under hard braking. The larger 380mm rotor adds mass and surface area, so it absorbs and sheds heat more effectively than the factory disc — which is what keeps the pedal consistent on repeated stops instead of fading.

• Fixed six-piston caliper improves pedal feel over the stock sliding caliper
• 380x34mm rotor adds heat capacity versus the factory disc
• Confirmed to fit behind the E300's 19-inch wheels, no spacers needed

The Dacromet coating on the rotor is also a corrosion-resistance treatment — it's a functional finish, not just a color, and it's meant to hold up better against rust and brake dust than a bare rotor over time.

Installation Gallery