Mercedes-AMG GLA45 X156 Downpipe — Catless, 200-Cell & 400-Cell | M133 2.0L Turbo | 2015–2019
YPG Motorsport catless downpipe for the Mercedes-AMG GLA45 (X156) replaces the restrictive factory catalytic converter on the M133 2.0L turbocharged four-cylinder. The GLA45 shares the identical M133 powertrain with the A45 and CLA45 — same engine, same tuning potential. The compact crossover body with all-wheel drive hooks everything, making the GLA45 one of the most underrated performance platforms in the AMG lineup.
Removing the factory cat unlocks faster spool, sharper throttle response, reduced EGTs, and a significantly more aggressive exhaust note. When paired with a YPG Stage 2 ECU calibration, the GLA45 delivers approximately 420–440 HP and 420–440 lb-ft of torque — a gain of +40–60 HP over stock.
Compatibility
- 2015–2019 Mercedes-AMG GLA45 (X156)
- M133 2.0L Turbo — 360 HP (pre-facelift) / 381 HP (facelift)
Key Specifications
- Material: Low-carbon 304 stainless steel
- Construction: TIG welded, hand finished
- Flanges: CNC-machined 304 stainless — OEM mounting points
- Fitment: Direct OEM replacement — bolt-on, no fabrication
- Origin: Made in Germany
- Warranty: Lifetime
What's Included
- 1× stainless steel downpipe (catless, 200-cell, or 400-cell per selection)
- All necessary bolts, gaskets, and clamps
Installation
Professional installation recommended. 1.5–2.5 hours with lift access. Stage 2 ECU calibration required for CEL elimination and full gains. YPG offers remote ECU flashing worldwide.
Related M133 Downpipes
These downpipes are the hardware prerequisite for Stage 2 power. Pair them with the matching ECU tune to extract the full gains.
View Stage 2 Tune →
