CTS Turbo 3.5″ Downpipe High-Flow CAT for Mercedes-Benz M133 A45/CLA45/GLA45 AMG

Code: CTS-EXH-DP-0029-CAT


In Stock

Disclaimer * 

Included Warranty

12 Months
All CTS Turbo products are warrantied against manufacturing defects for a period of 12 months from the date of invoice. Warranty does not cover abuse, misuse, consequential damages, normal wear and tear, improper installation, or damages resulting from racing. Warranties only apply to the original owner. If a product is found defective the customer will receive, at the discretion of CTS Turbo, free repair or replacement. Warranty on other manufacturers will be processed under their terms.


We are proud to release the new CTS Turbo 3.5″ High-Flow CAT for Mercedes-Benz M133 A45 AMG, CLA 45 AMG and GLA 45 AMG.

Unfortunately, the factory downpipe that comes as standard equipment in your car was designed for anything but performance.  The factory downpipe severely restricts exhaust flow and therefor has adverse effects on horsepower, especially once your car is tuned.  The CTS Turbo 3.5″ high-flow catalytic converter downpipe will allow for your exhaust gases to flow smoothly, freeing up the additional ponies that you want, all while look amazing.

Product Details:

  • 200cpi high-flow race catalytic converter
  • 3.5″ T304 Stainless Steel tubing
  • OE-style Heat shielding
  • 100% TIG-Welded and back purged
  • T304 Stainless Steel 02 bung
  • Great Sound even with factory exhaust, no drone!!
  • Perfect fitment for easy installation


  • 2013-2018 Mercedes A45 AMG Hatchback W176 2.0L 4cyl M133 engine
  • 2013-2018 Mercedes CLA45 AMG Coupe W176 2.0L 4cyl M133 engine
  • 2014-2019 Mercedes GLA45 AMG SUV X156 2.0L 4cyl M133 engine
Stage 2 software is required to avoid check engine light.

Additional information

Weight 22 lbs
Dimensions 18 × 8 × 8 in


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Make Model Year Generation
Make Model Year Generation
MERCEDES-BENZ A45 2014 - 2019 W176
MERCEDES-BENZ CLA45 2014 - 2019 C117
MERCEDES-BENZ GLA45 2014 - 2019 X156