Mercedes-Benz E-Class Big Brake Kit Upgrade / TTSPORT Classic 8703
16 Jul 2026
Mercedes-Benz E300L W213 Brake Kit Configuration
| Component | Confirmed specification | Role in this build |
|---|---|---|
| Vehicle | Mercedes-Benz E300L, W213 generation | Front-and-rear street brake upgrade |
| Wheel setup | 19-inch wheels | Wheel package used for this installation |
| Front caliper | TTSPORT TT8703 six-piston caliper | One-piece cast front caliper for the primary braking load |
| Front rotor | 380 × 34 mm high-carbon, heat-treated curved-slotted rotor | Adds front-axle thermal mass and braking leverage |
| Rear performance caliper | TTSPORT TT6411 four-piston caliper | Handles normal rear service braking |
| Rear rotor | 380 × 28 mm high-carbon, heat-treated curved-slotted rotor | Adds rear-axle thermal capacity |
| Parking brake | Separate TTSPORT electronic parking brake caliper | Handles the electronic parking-brake function independently |
| Rear layout | Dual-caliper setup | TT6411 performance caliper plus a separate EPB caliper |
| Brake lines | TTSPORT braided brake lines | Limit hydraulic hose expansion under pedal pressure |
| Axle coverage | Front and rear | Creates one coordinated full-vehicle brake package |
A 19-inch wheel is not an automatic fitment guarantee. The wheel barrel, spoke shape, offset, caliper-to-spoke clearance, and any spacer requirement must be checked before the kit is ordered.
Why This Front-and-Rear Setup Fits the E300L
| TTSPORT feature | Why it matters on this vehicle | What you notice |
|---|---|---|
| TT8703 six-piston front caliper | The front axle handles most of the braking load as the E300L transfers weight forward. Six pistons spread hydraulic force across a larger pad area instead of concentrating it in one section. | More controlled pressure build-up and a clearer connection between pedal input and braking force. |
| 380 × 34 mm front rotor | A large, thick high-carbon rotor provides more material to absorb the heat created during repeated stops. | Braking response changes less as temperatures rise during highway driving, mountain descents, or repeated firm braking. |
| Curved-slotted rotor surface | The slots continually sweep the working faces of the pad and rotor while giving heat, gases, water, and debris an escape path. | Cleaner pad contact and more predictable initial response in changing road conditions. |
| TT6411 four-piston rear caliper | A full front-and-rear upgrade adds usable rear brake hardware instead of treating the rear axle as a cosmetic afterthought. | A more cohesive response when braking pressure rises, provided the system is correctly sized, installed, and bled. |
| 380 × 28 mm rear rotor | The larger rear rotor increases the amount of heat the rear axle can manage and visually matches the front installation. | More consistent rear brake behavior during repeated use and a complete wheel-to-wheel appearance. |
| Separate EPB caliper | The TT6411 handles service braking while the second caliper performs the parking-brake job. Each caliper has one clear function. | You retain a dedicated electronic parking brake without asking the performance caliper to perform two different tasks. |
| Braided brake lines | Braided lines resist expansion better than conventional flexible rubber hoses as hydraulic pressure rises. | A firmer pressure signal at the pedal, especially during stronger braking inputs. |
What Gets Better
- More front and rear rotor capacity for repeated braking
- Clearer pedal response under firm hydraulic pressure
- More progressive control from light braking to harder stops
- A rear performance caliper that contributes to the complete system
- Dedicated electronic parking-brake operation
- Full front-and-rear brake presence behind the 19-inch wheels
What to Confirm First
- Exact model year, trim, chassis, and factory brake specification
- Front and rear hub, knuckle, and mounting configuration
- Wheel barrel diameter, spoke profile, width, and offset
- Caliper-to-spoke clearance with any proposed spacer
- Pad compound for the desired balance of bite, dust, and noise
- Brake-fluid condition and the required bleeding procedure
- Electronic parking-brake wiring and operating sequence
- Professional installation and local modification requirements
If you are unsure whether the 380 mm package clears your wheels, send your E300L and wheel specifications through our fitment request before ordering.
Mercedes-Benz E300L Build Gallery
Mercedes-Benz E300L Brake Kit FAQ
Does this TTSPORT brake kit fit every Mercedes-Benz E300L W213?
No. Confirm the model year, trim, chassis, hub and knuckle configuration, and any existing brake modifications before ordering.
Will any 19-inch wheel clear the 380 mm brake kit?
No. This case used 19-inch wheels, but wheel diameter alone does not confirm clearance. Barrel diameter, spoke profile, offset, and caliper-to-spoke space must be checked.
How does the rear electronic parking brake work in this setup?
It uses a rear dual-caliper layout. The TT6411 four-piston caliper handles service braking, while a separate TTSPORT EPB caliper handles parking-brake duty.
Is this front-and-rear setup suitable for a daily-driven E300L?
It can be when wheel fitment, piston sizing, pad compound, brake fluid, and installation are matched to street use. Proper bedding is also required.
What should be checked after installation?
Verify fastener torque, hose routing, fluid bleeding, pedal feel, rotor-to-caliper alignment, and EPB operation, then complete the specified bedding procedure and recheck the system.
Need fitment confirmation? Choose the closest TTSPORT series or send your vehicle, wheel size, and intended use before ordering.