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M274 Catless Downpipe for 2015–2021 Mercedes C300 W205 E300 W213
M274 Catless Downpipe for 2015–2021 Mercedes C300 W205 E300 W213
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M274 Catless Downpipe – C300 / E300 / GLC300
Refined sound • Quicker turbo response • OEM-style fitment
The factory catalytic converter on the M274 2.0L turbo sits directly after the turbo and creates major exhaust restriction. This high-flow catless downpipe removes that bottleneck for quicker spool, stronger mid-range torque, and a sharper note — pairs well with ECU calibration.
🎧 Sound Reference
Removing the factory cat triggers a check engine light (CEL). Proper calibration disables the CEL, adjusts fueling and ignition maps, and removes factory torque limits — all while the car retains its built-in protection systems.
Up to +55 HP / +75 TQ with proper ECU calibration.
⚙️ Compatibility – U.S. Market
| Model | Chassis | Years | Engine |
|---|---|---|---|
| Mercedes-Benz C300 | W205 / C205 / A205 | 2015–2021 | M274 2.0L Turbo |
| Mercedes-Benz E300 | W213 | 2017–2020 | M274 2.0L Turbo |
| Mercedes-Benz GLC300 | X253 | 2016–2019 | M274 2.0L Turbo |
Off-road and competition use only. Not legal for street use.
🏁 Why Choose Us for Your M274 Build
- Backed by 10+ years of Mercedes performance expertise
- Proven across street, track, and dedicated race car applications
- Precision fitment on C300, E300, and GLC300 platforms
- We only sell parts we run and test on our own cars
Same-day U.S. shipping • Expert fitment support • Platform-specific parts
