W205 M276 Performance Parts – C43 / C450 / C400

Take your W205 Mercedes-Benz to the next level with precision-built performance parts for the M276 BiTurbo V6 engine. This collection is engineered for C43 AMG, C450, and C400 owners seeking real horsepower gains, deeper exhaust tone, and sharper throttle response — all while maintaining daily drivability and reliability.

Whether you’re installing catless downpipes for better flow, upgrading to a custom ECU tune to eliminate CEL and maximize gains, or adding ceramic-coated components for superior heat management, these parts are all bolt-on and tested specifically for the W205 chassis.

Collection Highlights:

• ✅ 100% fitment-tested for W205 C-Class (C43, C450, C400)
• ✅ Raw stainless and ceramic-coated catless downpipes
• ✅ In-house ECU tuning – no CEL, multiple octane maps, handheld optional
• ✅ Improved exhaust flow, turbo spool, and driving dynamics
• ✅ Ships fast from California

All parts in this collection are compatible with the 3.0L M276 twin-turbo V6 used across W205 platforms. Whether you're searching for W205 AMG C43 performance upgrades, M276 exhaust mods for the C450, or bolt-on tuning parts for the C400, this collection is your starting point for high-impact results.

Trusted by tuners and DIY builders across the U.S. — this setup is built for power, reliability, and results.

❓ W205 C43 / C450 / C400 Performance FAQ

• Will this setup trigger a CEL?
  Yes — removing the primary catalytic converters will trigger a check engine light unless you tune the ECU. Our in-house tuning eliminates this while optimizing performance.
• Can I daily drive this setup?
  Absolutely. All components are street-friendly with proper tuning, and designed to maintain factory drivability while enhancing power delivery and sound.
• What kind of gains can I expect?
  Downpipes alone provide +10–20hp, but when paired with tuning, gains can reach +60–70hp and +80–100 lb-ft of torque depending on fuel grade.

Need help choosing the right parts or bundling with tuning?