Are you ready to radically transform the driving experience in your Volkswagen MK4 337 or 20th AE GTI? Take your docile, stock exhaust and replace it with the ECS Tuning in-house engineered Catback Exhaust System! Our catback exhaust provides for a sporty European exhaust note, with a deep, aggressive sound without too much drone. Intoxicating exhaust notes fuel your desire to push your engine to its limits with every ounce of power and every engine revolution. Experience true driving passion with our ECS Catback Exhaust System!

Want to learn more? Check out this product highlight featured on the ECS Tuning YouTube channel!

PART DESIGN

• In-house designed and engineered using FARO ARM laser scanning technology and SolidWorks 3D CAD modeling for precision fitment 

• 2.5" T304 Stainless Steel CNC Mandrel Bent, Brushed Tubing with 1.25mm wall thickness

• The beautifully crafted final assembly is artfully Tig-welded and back purged for superior durability and the finest appearance

• A stainless steel, wool packed resonator cuts down on unwanted drone

• Features a straight-through 2.5" flow path for the least amount of restriction and turbulence 

• Muffler Design:

  • Straight Through "Turbo Style" Muffler

  • In-House designed to provide a sporty driving experience like no other

  • Perforated core with stainless steel wool packing for sound absorption  

• Lighter weight than the OEM exhaust system

  • ECS Catback Weight: 21 lbs

  • OEM Catback Weight: 27 lbs 

• T304 Stainless Steel 12mm barbed exhaust hangers, featuring 360° hanger stoppers, are Tig-Welded in OE locations for precise location

• Strategically placed slip joints provide the most adjustability to obtain perfect fitment

• Designed to maximize ground clearance

KIT CONTENTS

• Downpipe adapters (3); 1 for OEM (55mm) downpipe, 1 for aftermarket 2.5" downpipe, 1 for aftermarket 3.0" downpipe ending at OEM location

• Accuseal style clamps (6)

• OEM diameter (55mm) sleeve clamp 

• 2.5" Resonator / Midpipe Assembly

• 2.5" Over-Axle Connecting Pipe

• 2.5" Muffler Assembly

• 337/20th AE tailpipe + 4.0" exhaust tip 

PRODUCT DEVELOPMENT

• Our ECS Tuning MK4 Catback Exhaust System was designed, engineered, tested and quality inspected by our Research and Development team in our Wadsworth, Ohio facility. We strive for the highest level of precision and quality through leading-edge product development technology including FARO laser scanning for reverse engineering and quality inspection, SolidWorks 3D CAD modeling, rapid prototyping utilizing our in-house 3D printer, and rigorous long term product testing. 

INSTALLATION AND SUPPORT

• Looking for installation tips? Look no further, we put together a full installation tutorial from start to finish including how to remove your OEM parts! See our Installation PDF under the INSTALLATION Tab for more information. 

• Head over to our YouTube channel for our full feature video @ ECS Tuning! 

• Please note, we highly recommend new exhaust hangers for proper fitment. As these vehicles age the condition of the rubber hangers will impact fitment.