Mercedes-AMG CLA45 C117 Downpipe — Catless, 200-Cell & 400-Cell | M133 2.0L Turbo | 2014–2019
YPG Motorsport catless downpipe for the Mercedes-AMG CLA45 (C117) replaces the restrictive factory catalytic converter on the M133 2.0L turbocharged four-cylinder. The CLA45 shares the identical M133 powertrain with the A45 and GLA45 — same engine, same tuning potential, same modification path. Removing the factory cat unlocks faster spool, sharper throttle response, reduced EGTs, and a significantly more aggressive exhaust note with pronounced turbo whistle and pops on overrun.
Power Gains with Stage 2 ECU Calibration
When paired with a YPG Stage 2 ECU calibration, the CLA45 delivers approximately 420–440 HP and 420–440 lb-ft of torque — a gain of +40–60 HP over stock. For Stage 3+ turbo builds targeting 500+ HP, a downpipe is a mandatory prerequisite.
Compatibility
- 2014–2019 Mercedes-AMG CLA45 (C117)
- 2014–2019 Mercedes-AMG CLA45 Shooting Brake (X117)
- 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
⚠ MOTORSPORT USE ONLY — LEGAL DISCLAIMER
This product is sold for motorsport, off-road, and competition use only. It is not legal for use on vehicles operated on public highways in jurisdictions where emissions equipment removal is prohibited. The buyer assumes full responsibility for compliance with all applicable local, state, and federal laws.
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 →
