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Unitronic AWD MQB Downpipe - w/Cat (15-20 A3 Quattro, S3, 15-19 Golf R)

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$950.39
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SKU: 107998
MPN: UH027-EXA | UH009-EX3

Product Details

Description

Constructed of 3" T304 stainless steel mandrel bent tubing, T316 stainless steel flanges, a corrugated stainless steel flex section, and TIG welded fabrication, this downpipe is built to withstand the test of time, while performing to the max.

All Unitronic downpipes come equipped with a 200-cell high flow metallic catalytic converter and all transitions are flow-matched to allow for maximum performance and airflow.

In addition, Unitronic exhausts feature an easy-to-use v-band exhaust fastening system to ensure a fast and effortless installation and precise fitment.

To finish it off, an OEM-inspired catalytic converter heat-sheild protects against unwanted heat radiating in the exhaust tunnel. Every Unitronic Exhaust System comes equipped with a brushed matte finish for an elegant appearance that will last a lifetime. There's simply nothing like it!

Features/Benefits

  • 3-inch T304 Stainless Steel Tubing: 
    Top quality material that will not rust and will outlast your vehicle.
  • Direct Bolt-On Fitment with OEM Mounting Locations: 
    Use all Factory mounting location on the engine and on front subframe like an OEM part.
  • T316 Stainless Steel V-Band Flanges: 
    Durable, rust proof and cnc machined.
  • Smooth 80mm to 76.2mm turbo to downpipe transition:
    Assure a smooth flow transition between Turbine housing and 3” Stainless steel piping.
  • Locked V-band Rotation: 
    Securing downpipe to the engine assure no possible v-band flange rotation during hard acceleration.
  • Factory position 200-cell metallic matrix high-flow catalyst:
    For maximum efficiency.
  • OEM-inspired catalytic converter heat shield:
    To reduce radiant heat.
  • OEM Oxygen Sensor Placement: 
    No need for O2 sensor extension or modification of the wiring harness.
  • TIG Welded Construction: 
    Professionally TIG welded to ensure longevity, durability and top tier craftsmanship.
  • 4-inch Corrugated Stainless Steel Flex Section: 
    High quality flex with inner interlock that will stay leak proof for years. It allows engine movement without stressing the factory rubber mounts.
  • Unique V-Band Fastening System Featuring Clampco® clamps: 
    Maintain a perfect alignment of v-band flanges while ensuring a leak-proof connection every time. Fully reusable and quick to install.
  • Universal Fitment: 
    Comes with OEM size reducer for a direct bolt-on. Optional 3” adapter available for any after market exhaust system or 3” slip fit adjustable link to match to any Unitronic exhaust system.

Hardware Included

  • Unitronic 3" Catatlytic Converter Section
  • Unitronic 3" Downpipe Section
  • Unitronic 3" V-Band Exhaust Clamps
  • 3" V-Band Adapter
  • Unitronic 3" V-Band Sealing Rings
  • All Necessary Hardware Included

Required Software

  • Stage 2

Emissions Disclaimer

  • This product is sold for off-road use only.
  • By purchasing this product, you understand this product is sold for competition use and is not legal for use in highway or street vehicles.
  • The appropriate downpipe software is needed for this part or it will throw a CEL

 

Stage 2 Power Numbers:

Product Features

  • 3-inch T304 Stainless Steel Tubing
  • Direct Bolt-On Fitment with OEM Mounting Locations
  • T316 Stainless Steel V-Band Flanges
  • Smooth 80mm to 76.2mm turbo to downpipe transition
  • Locked V-band Rotation
  • Factory position 200-cell metallic matrix high-flow catalyst
  • OEM-inspired catalytic converter heat shield
  • OEM Oxygen Sensor Placement
  • TIG Welded Construction
  • 4-inch Corrugated Stainless Steel Flex Section
  • Unique V-Band Fastening System Featuring Clampco® clamps
  • Universal Fitment

warranty

Lifetime Warranty on Hardware & 15-day Satisfaction Guarantee on Performance Software

Unitronic Warranty Information

Fitment Guide

Does this fit my vehicle?

Fitment Guide
Start Year End Year Make Model Submodel Cyl Lit Fuel FuelDel ASP EngDesg Notes
2015 2020 AUDI A3 QUATTRO CABRIOLET PREMIUM
CABRIOLET PREMIUM PLUS
CABRIOLET PRESTIGE
PREMIUM
PREMIUM PLUS
PRESTIGE
L4 2.0 GAS FI T ALL  
2015 2020 AUDI S3 PREMIUM PLUS
PRESTIGE
L4 2.0 GAS FI T ALL  
2015 2019 VOLKSWAGEN GOLF R L4 2.0 GAS FI T ALL  

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Customer Reviews

4 / 5 Avg. Rating
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  • Car Enthusiast

    At first It was a little loud, Atleast to my exceptions considering it was Catted, but after tying my car to the stage 2 Unitronic burble tune I fell in love instantly. The car sounds great, burbles likes crazy (which I guess depends on ur preference) but I have zero complaints. Even if you want to run the stage 2 file without burbles you will have very moderate burbles but it’s not to complain about. Would definitely buy again and very happy with the way my A3 sounds. Don’t fall for the catless gimmicks because this sounds just as good but doesn’t case a gas smelly cabin and you can run through state inspection just fine.

    Michael Gorny
  • Not as direct bolt-on as advertised for the 2017 TT...

    Needed to cut 2.5 inches off of both the supplied reducer and muffler pipe to get this to fit correctly. Other than that it looks great...not sure how I like the sound yet...

    Ezra
  • great sounding downpipe that looks awesome. def a high quality system

    Bryan