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Milltek Catback Exhaust for Audi RS3 8V (Non-Resonated) (Polished Tips)


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Manufacturer's Suggested Retail Price $2,359.00

Regular Price: $2,359.00

Special Price $2,123.10


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We reckon we're on safe ground when we say that the re-emergence of the small, hatchback-derived saloon has been one of the more unexpected automotive industry developments of recent years, and much of the credit for the re-popularisation of the booted hatch sector can be laid squarely at the feet, or rather the wheels, of the RS3 saloon. Those fortunate enough to own an example of the booted RS3 8V MQB will no doubt be glad to learn that the model has just been added to the Milltek Sport range of performance exhaust systems.

The latest version of Audi's premier hot hatch, the 8V RS3, remains one of the most capable performance cars on sale today. Immense, near 400bhp levels of performance are paired with classic, sure-footed Quattro handling, all wrapped up in a typically refined and understated body. It's a compelling mix and one that's enabled the RS3 to find countless thousands of homes, but there's always room for improvement – hence the expansion of the Milltek range to accommodate it.

Milltek's latest exhaust offering for the 8V generation can be specified in the firm's customary, open-ended manner, giving buyers the freedom design the system best suited to their requirements. It begins with a choice of core systems, either a large-bore downpipe and de-cat (a product intended for the race/track market), or a large bore downpipe and high-flow sports cat. Milltek also offers a further option, one aimed at those buyers seeking to enhance both the sound and performance of their RS3, a secondary catalyst bypass. It fits both OE and Milltek cat-back systems.

The Milltek Sport range opens with a duo of non-resonated cat-back options. While still completely legal to use on the UK's road network, non-resonated systems will be significantly louder than those mentioned below, able to emit a suitably aggressive exhaust note. Both options consist of a front silencer bypass, a rear silencer with HollowTek Technology (one which re-purposes the OE electronic valves), electronic valve motors, wiring adaptors, a pair of trim connecting pipes, and a choice of oval twin tail pipe options; Cerakote black or polished.

Those RS3 owners seeking a quieter, less raucous exhaust note would be well advised to consider Milltek Sport's other cat-back options, both of which are resonated. Again, the two options consist of beautifully designed and manufactured exhaust components, namely a front silencer assembly, a rear silencer with HollowTek Technology (one which re-purposes the OE electronic valves), electronic valve motors, wiring adaptors, a pair of trim connecting pipes, and the tail pipe options outlined above.

Obviously the Audi RS3 is a highly desirable, wonderfully designed and manufactured car, one that demands that any aftermarket product bolted to it be at least as well engineered as the OE equivalent, and the Milltek Sport cat-back exhaust more than delivers in this respect. Not only is it made from high grade steel and to exhaustive standards, the Milltek silencer delete system has been proven to offer subtle increases in both power and torque, plus a soundtrack that really does need to be witnessed to be fully appreciated!

Constantly striving to build the best exhaust systems technically possible has resulted in a number of Milltek firsts and breakthroughs, with one of the most notable being their HollowTek manufacturing technique. This involves the careful placement of shaped silencer casings, reflection plates and varying lengths of solid and perforated internal tubing, all designed to create special chambers within the silencer itself that cancel out resonant frequencies and drone while driving at speed.

HollowTek ensures that no additional under-hang is visible beneath the system, reduces overall weight, permits the use of smaller boxes, results in a deeper sound, and enhances the pops and crackles that characterise the over-run sound of vehicles fitted with electronic exhaust valve control modules.


Consists of:

  • 1 x Front Silencer Bypass
  • 1 x Rear Silencer featuring HollowTek Technology (re-uses Electronic Valves from OE system)
  • 2 x Electronic Valve Motors (3 Pin)
  • 2 x Wiring Adapters 4 Pin to 3 Pin
  • 2 x Trim Connecting Pipe
  • 1 x LH Oval Trim (170x107mm)
  • 1 x RH Oval Trim (170x107mm)


Tip Style:

  • Oval (170x107mm)


Company history and other general information about Milltek Sport

Over 20 years of continuous exhaust development and technical expertise are drawn upon to develop the ultimate Milltek Sport range of performance products.

Milltek Sport offer an ever expanding comprehensive selection of Performance exhausts which build on the successes of key marques like Audi, Volkswagen, Porsche, Mini and BMW. This has placed Milltek Sport at the forefront of tuning companies and owners ‘must have’ list. Milltek Sport have appointed key distributors and are currently exporting to over 60 countries around the world.

Milltek Sport exhausts are produced in high quality type 304 aircraft grade stainless steel. This material is anti-magnetic (other manufacturers stainless steel may not be) and is less susceptible to discolouration. This quality of stainless steel is used on all pipework and the total construction of the silencer. Mandrel bending ensures full flow bends for better gas flow and Milltek systems are increased in bore to ensure ultimate performance without the loss of mid range torque.


Why buy a Milltek Sport exhaust?

Milltek Sport exhausts have a genuine performance edge - noticable power gains, sounds that are truely awesome, styled looks that are aggressive but discrete and a feeling of true exhilaration.

  • Transforms performance and driveability
  • Sharper throttle response
  • Substantial weight saving over original equipment systems
  • Precision, quality controlled manufacture to ISO 9001 standards
  • Highest quality aircraft-grade stainless steel
  • Low pressure systems for maximum performance - with no loss of low end torque
  • Responsibly developed and engineered
  • Designed and manufactured in the UK

Additional Info

Additional Info

Weight 50.0000
Box Size N/A
Manufacturer Milltek
Country of Manufacture United Kingdom
USA Location Imported by ESE Tuning
Warranty Limited Lifetime Warranty
Installation Instructions (PDF)

click here

Rebates (PDF) N/A

Application Guide

Make Model Drivetrain Chassis / Year Engine
Audi RS3 Quattro 8V (2018-PRESENT) 2.5T


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