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Win this M240i!
Every $50 spent = 1 entry*

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MK7 Jetta Quad Exit Axle-Back Exhaust System - With Gloss Black Rear Diffuser & 3.5" Chrome Tips

Upgrade the appearance and sound of your 1.4T Jetta with our ECS Quad-Tip Exhaust and Rear Diffuser Kit
Requires R-Line or SEL Premium rear bumper
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$816.95 (Sale - Save 3%)
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Availability: Inventory On Order, ETA Oct 6, 2021
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Product Details

Requires R-Line or SEL Premium rear bumper

Looking to add an aggressive appearance upgrade while enhancing the exhaust note on your MK7 Jetta 1.4T? Our ECS Tuning In-House Designed & Engineered Quad Tip Axle-Back Exhaust System gives your VW the enhanced performance upgrade you've been looking for! Our Axle-Back system locates four of our ECS Tuning Swivel Exhaust Tips within our ECS Rear Diffuser for a sporty Euro appearance upgrade that's found nowhere else! Not only does our exhaust system add a German sports car look, but we bump up the volume by deleting the OEM muffler, which adds a smooth exhaust note that allows you to enhance your driving experience with your 1.4 liter turbocharged engine! 

Our exhaust system is made from high quality brushed T304 stainless steel with Tig-welded joints for an exceptional look and durability. Our exhaust connects to your stock exhaust system with 1 simple cut and then routes spent exhaust gases to a pair of our CNC-mandrel bent 57mm tailpipes before splitting into a quad-pack of slant-cut 3.5" swivel exhaust tips. Extremely durable, stainless steel, barbed exhaust hangers are Tig-welded in place and an additional exhaust hanger is included for the passenger's side tailpipe. 

Our included ECS Tuning Quad Tip Rear Diffuser features a deep profile, an aggressive blade design and exposed tip openings to house our ECS Tuning 3.5" swivel exhaust tips. The diffuser was designed and engineered in-house to add an aggressive appearance upgrade while supporting our quad tip exhaust system. 


** NOTE: The rear valance is only serviceable on R-Line and SEL Premium models, other trim levels will need to convert to the aforementioned trim model rear bumper to use our diffuser (see ES#4040412 instead). 



  • Rear Diffuser 
    • Designed and engineered in-house using state of the art 3D laser scanning and CAD technology for precision fitment. Mimics the design of our carbon fiber version as closely as possible for similar styling. 

    • Featured on Jamie Orr's MK7 Jetta 2018 SEMA build and tested on the Nürburgring and the Autobahn

    • Made from lightweight, vacuum formed gloss black ABS polymer that is enhanced with UV-stabilizer 

    • CNC-Machined tabs for perfect engagement 

    • Mimics the lower section of the bumper & OE valance lines to accentuate OEM features

    • Utilizes the dead space behind the OE valance to simulate a functional diffuser with great depth 

    • Outer blades blend into quad exhaust housings that accommodate up to 3.5" OD exhaust tips, on either side of the diffuser, and will work in tandem with our ECS Quad Tip Axle-Back Exhaust System or Borla Quad Tip Catback.

    • Mounts to OE clip locations and OE holes on the outer edges of the bumper with our supplied, stainless and corrosive resistant zinc hardware.

    • Includes a wrinkle black powdercoated, 5052 aluminum bracket to add rigid mounting to the center of the diffuser.


  • Axle-Back Exhaust System 
    • In-house designed and engineered using FARO ARM laser scanning technology for precise fitment 

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

    • Dual 57mm Tailpipes with Tig-Welded connections 

    • Over double the cross sectional area to free up the restriction from the large, rear muffler

    • Minor increase in weight over OEM muffler (ECS Axle-Back Exhaust - 23 lbs VS OEM Muffler - 18 lbs)

    • T304 Stainless Steel 12mm barbed round stock exhaust hangers Tig-Welded in OE locations for precise fitment. An additional exhaust hanger with mounting bolt is included for the passenger-side tailpipe. 

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




  • Rear Diffuser

    • Vacuum Formed, Gloss Black, Rear Diffuser 

    • Center Mounting Bracket and mounting hardware

  • Axle-Back Exhaust System 

    • Merge pipe with dual tailpipe sections 

    • Stainless Steel Accuseal exhaust clamps (3) 

    • Passenger-side exhaust hanger with rubber bushing and mounting bolt

    • ECS 3.5" Chrome Swivel Tips (4) 



  • Our ECS Tuning Quad Exit Axle-Back Exhaust and Gloss Black Rear Diffuser were 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. 



  • 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 in detail! See our Installation PDF under the INSTALLATION Tab for more information.

This Part Fits the Following Vehicles

Make Model Submodel Engine
Volkswagen Jetta VII Sedan 1.4T
*The above product applications have been written by ECS Tuning. All warranties, product application, fitment, and performance are the responsibility of ECS Tuning. For additional information see the terms of use.

Kit Contents

Description Brand Qty
HEX-HEAD BOLT 8X25 Genuine Porsche - Corporate Logo 1
ECS UNIVERSAL Swivel Exhaust Tip - 3.5" Chrome - Priced Each ECS - Corporate Logo 4
Exhaust Hanger Assembly - Each Genuine Volkswagen Audi - Corporate Logo 1
Mounting Bracket - Assembly ECS - Corporate Logo 1
Alloy Steel Button Head Hex Drive Screws Blue-Dyed Zinc-Plated, M8 X 1.25 Mm Thread, 20 Mm Long - EACH Bremmen Parts - Corporate Logo 2
Black Ultra-Corrosion-Resistant Coated Steel Washer For M8 Screw Size, 8.4 Mm ID, 16 Mm OD - EACH Bremmen Parts - Corporate Logo 4
High-Strength Steel Hex Nut Class 10, Zinc Yellow-Chromate Plated, M8 X 1.25 Mm Thread - EACH Bremmen Parts - Corporate Logo 2
Quad Tip Rear Exhaust Section ECS - Corporate Logo 1
Quad Tip Rear Diffuser ECS - Corporate Logo 1


ECS Tuning is not affiliated with any automobile manufacturers.
Manufacturer names and/or part numbers are used only for identification purposes.

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