Mercedes-Benz A-Class (W177) Big Brake Kit Upgrade / TTSPORT Evolution LCCB
The fourth-generation Mercedes-Benz A-Class (W177) shipped with a multi-piston front caliper and a large vented rotor from the factory — a genuinely strong setup for a compact car, and one that's fine for daily driving and the occasional spirited run. The catch shows up when driving intensity climbs: repeated hard stops at speed, mountain roads, or track days start exposing heat fade and inconsistent pedal feel. This case looks at a smarter fix than throwing out the whole system.
Plenty of W177 owners assume a bigger caliper is the only path to better braking. But on a car that already runs a multi-piston front caliper from the factory, the real bottleneck usually isn't the caliper — it's the rotor's material and heat capacity. That's the thinking behind this build: keep the OEM front caliper structure, and let a rotor upgrade do the heavy lifting.
Vehicle & Kit Specs
| Item | Specification |
|---|---|
| Vehicle | Mercedes-Benz A-Class (W177), 20-inch wheels |
| Front caliper | OEM multi-piston caliper, retained — no replacement |
| Front rotor | TTSPORT 350mm LCCB carbon-ceramic rotor |
| Rear rotor | TTSPORT 330mm high-carbon oversized rotor |
| Pads | TTSPORT high-performance ceramic brake pads |
| Hardware | Mounting bolts and fixing hardware |
Why It Works
Front brakes do the majority of the stopping on any car, so that's where the upgrade priority went. Swapping in a carbon-ceramic rotor while keeping the OEM caliper changes the equation without touching the parts that were already working.
- Carbon-ceramic material holds a stable friction coefficient at high temperature, cutting down the fade that plagues conventional steel rotors under sustained hard braking.
- Repeated heavy stops — highway deceleration, mountain descents, aggressive driving — stay linear and predictable instead of going soft under load.
- Lower rotor mass reduces unsprung weight, which sharpens steering response and lets the suspension work more precisely.
- Carbon-ceramic rotors typically outlast steel rotors by a wide margin under normal use, which helps offset the higher upfront cost over time.
The rear axle plays a more supporting role, mainly stabilizing the car under braking rather than generating the bulk of stopping force. That's why this build takes a simpler, cost-conscious approach at the rear: a 330mm high-carbon oversized rotor increases rear brake participation and keeps the car more stable and less nose-heavy under hard stops, without the added cost of a carbon-ceramic rear rotor.
Installation Gallery
Does this upgrade replace the OEM Mercedes-Benz A-Class calipers?
What rotor sizes are used front and rear on this W177?
Does the kit fit under the car's factory wheels?
Need fitment confirmation? Choose the closest TTSPORT series or send your vehicle, wheel size, and intended use before ordering.