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M270 Catless Downpipe – Mercedes CLA250 C117 & GLA250 X156 (2014–2019) 2.0L Turbo, FWD Only
M270 Catless Downpipe – Mercedes CLA250 C117 & GLA250 X156 (2014–2019) 2.0L Turbo, FWD Only
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Replace your restrictive factory catalytic converter with this high-flow two-piece catless downpipe and mid-pipe kit built specifically for the Mercedes-Benz CLA250 (C117, 2014–2019) and GLA250 (X156, 2015–2019) with the M270 2.0L Turbo. Expect noticeably quicker turbo spool, sharper throttle response, aggressive pops and bangs, and improved power when paired with proper ECU tuning.
Front-wheel-drive models only
This kit does not fit 4MATIC cars or the later M260 engine. The engine code and drivetrain decide fitment — check both against the table below before ordering.
What's Included
Two pieces — the catless downpipe and the mid-pipe — with gaskets and hardware, as pictured.
Why Upgrade the Factory Downpipe?
- Louder turbo spool and revs — aggressive sound with pops and bangs
- Sharper throttle response — faster spool and improved drivability
- +34 hp / +32 lb-ft — with this kit and ECU calibration
Complete the Build
A catless setup will usually set a check-engine light without proper tuning. The tune is what turns the hardware loose — it lets the ECU use the extra flow and clears the fault codes properly.
Fitment
| Years | Model | Chassis | Engine |
|---|---|---|---|
| 2014–2019 | CLA250 (FWD) | C117 | M270 2.0L Turbo |
| 2015–2019 | GLA250 (FWD) | X156 | M270 2.0L Turbo |
If your car is on that list, this bolts straight on. 4MATIC cars and the later M260 engine are not covered.
Installation Notes
- Professional installation recommended
- Inspect and replace gaskets and hardware as needed during installation
- Re-check for leaks after the initial heat cycles
Frequently Asked Questions
Will this fit my CLA250 or GLA250?
Yes, for front-wheel-drive cars with the M270 2.0L Turbo — CLA250 (C117) 2014–2019 and GLA250 (X156) 2015–2019. Not for 4MATIC or M260 models.
What comes in the kit?
Two pieces — the catless downpipe and the mid-pipe — along with gaskets and hardware, as pictured.
Do I need a tune?
Strongly recommended. Catless downpipes will usually set a check-engine light without proper ECU tuning, and the tune is what unlocks the extra flow.
Will I get a check engine light?
Likely, on an untuned car. Removing the cat means the downstream O₂ sensor reads differently than the ECU expects. Tuning resolves it properly — we do not recommend defeat devices. Full explanation →
How loud will this make my car?
Much louder turbo spool, revs, and aggressive pops and bangs compared to stock. Sound level depends on your full exhaust setup.
What performance gains can I expect?
Faster turbo spool and sharper throttle response on their own, and +34 hp / +32 lb-ft once paired with ECU calibration.
Is there a warranty?
Yes — a 12-month structural warranty, with guaranteed fitment on every model listed above.
Buy With Confidence
- 12-month structural warranty with guaranteed fitment on listed models
- Free U.S. shipping with tracking on every order
- 30-day returns on unused, uninstalled items in original packaging — installed exhaust components are not eligible
- Real support — questions before or after purchase go straight to us, not a call center
Off road use only. Not legal for use on emissions-controlled vehicles or public roads.
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