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Milltek Downpipe with High Flow Cat Mini Cooper S 1.6T 07-13



Model #SSXM015

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This product is for Racing Competition only and is not legal for use in highway or street vehicles or other non-racing competition off-road vehicles.

Purchasing this product requires you to sign our Vehicle Compliance Waiver here.

Your original catalytic converter will typically have 400 or 600 cells per square inch (cpsi), these original cats are restrictive in their flow, typically allowing an open area of around 55-65%. A Milltek Sport Hi-flow Sports Cat which will be fully integrated into a large bore downpipe, has only 100-200 cpsi depending on application. These cats have an open area of between 75-85%, thus reducing back pressure substantially and increasing flow rates, all very desirable for extracting more performance, especially on turbocharged engines.

Milltek Sport Hi-flow Sports Cats are made from a special stainless steel containing aluminium (called Fecralloy). This material was developed in England in the 1970s specifically to provide resistance to oxidation at very high temperatures. The material is used as a very thin strip (2 thousandths of an inch) and is coiled together to make a honeycomb structure.

Because the metal strip is so thin, the honeycomb has a very low flow-obstruction. To reduce the flow-obstruction even further, the honeycomb is made with 100 or 200 cells (i.e. channels) per square inch compared with 400 or 600 per square inch for a standard catalyst. The result is that about 85% of the total cross-section is open.

NOTE: Milltek Sport hi-flow sports catalysts are designed to work specifically in conjunction with other Milltek Sport products and should not be used on their own (with the OEM exhaust system) or with other manufacturers exhaust systems. If the Milltek catalysts are fitted with non-Milltek exhaust systems, we are unable to provide any guarantee regarding noise quality, fit, performance or warranty against their operation.


Shipping Notification:

  • All Milltek products ship directly from the Manufacturer.
  • Customer is responsible for all customs and duty fees associated with shipment.

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Vehicle Engine Notes
Mini Cooper S

What is Milltek Sport?

Milltek Sport was founded in 1983 by a true car enthusiast. Since its inception, the company has grown to become the leading manufacturer of performance exhaust systems for a growing range of makes and models. More than 30 years of exhaust development and technical expertise are drawn upon to engineer the ultimate Milltek lineup of performance products. The brand offers an ever-expanding selection of sport exhausts that builds on the success of key marques like Audi, BMW, Porsche, Nissan, and Volkswagen.

Milltek Sport’s commitment to delivering a comprehensive lineup of quality performance products has placed it at the forefront of the tuning industry. The company has appointed key distributors and is currently exporting to more than 90 countries worldwide. Milltek Sport’s headquarters is located in the United Kingdom and its research & development center is at the iconic Nurburgring, Germany. The brand designs, develops, and tests all of its exhaust systems in-house using the latest cutting-edge equipment, like all-electrical CNC mandrel tube benders and FARO 3D laser scanners. That technology paired with one of the most experienced engineering and production teams allows Milltek to continue being the first to deliver advanced products and innovative designs. 

Quality Engineering

All Milltek exhaust systems are crafted from top-rate T304L stainless steel and built to withstand even the toughest conditions. T304L is a highly durable form of stainless steel that is less susceptible to degradation and discoloration, while virtually lasting almost indefinitely. Milltek’s dedication to perfection is what enabled the brand to become accredited to ISO 9001:2015. It also helped Milltek achieve the widest range of EC-approved exhaust solutions on the market, all of which are tested and approved by TUV in Germany.

Milltek Sport Racing

Everything Milltek Sport designs and manufactures has to be good enough for even the most demanding drivers and customers out there, particularly race teams. In order to fully grasp the demands and expectations of the motorsport field, Milltek has fully immersed itself within the industry and competed in some of the most arduous races and championships in Europe. 

Milltek has developed several vehicles and exhaust systems for Milltek Sport Racing to compete with in several series, including the Volkswagen Cup, Time Attack, VLN, N24, and the British Touring Car Championship. Through the brand’s own experiences on the track, it has been able to understand and perfect the exact tolerances and quality that the world’s leading motorsports team, manufacturers, and enthusiasts require.

Find Milltek Sport at Vivid Racing

If you are looking to upgrade your car’s exhaust system and see some real results, then Milltek Sport is the top choice. Vivid Racing carries a wide assortment of performance products from Milltek, including catback exhausts, test pipes, mid-pipes, downpipes, exhaust tips, mufflers, headers, complete exhaust systems, and more! If you are having trouble locating a particular item above, please call our expert sales team at (480) 966-3040.


In the unlikely event that you have a problem with your Milltek Sport exhaust system please consider the following Limited Warranty terms & conditions. To qualify for this Limited Warranty all Milltek Sport you must be the original purchaser of the products through an authorised Milltek Sport dealer. Having purchased products directly from an authorised Milltek Sport dealer, all warranties must be handled initially by that dealer. This Limited Warranty is void if the product(s) was/were not purchased new or improperly fitted either by an authorised Milltek Sport dealer or by a competent mechanic. This Limited Warranty applies to the original purchaser of the product only and is not transferable. To exercise the rights under this Limited Warranty, the product(s) must be presented to the supplying authorised Milltek Sport dealer, together with a receipt, bill of sale or other appropriate written proof of purchase which identifies the product(s) by serial number. Alternatively, you will need to supply the dealer with the Part Numbers and Batch Numbers which are stamped onto a plate on each part. Only authorised Milltek Sport dealers are authorised to perform warranty services under this Limited Warranty. Should the product(s) be determined by Milltek Sport to be covered by this Limited Warranty, it will be repaired or replaced, at Milltek Sport's sole discretion, which will be conclusive and binding.
  • Hi-Flow catalysts and Downpipes are covered by a 2 year or 80,000km guarantee.
  • All electronic products are covered by a 2-year guarantee.
  • All other products are covered by a lifetime guarantee.
Further conditions
  • In the event of a claim, it is the responsibility of the claimant to return the products to their authorised Milltek Sport dealer, carriage paid, and the products will be repaired or replaced at the manufacturer's discretion, free of charge.
  • The Limited Warranty terms covers the exhaust system only and does not cover garage labour, recovery, vehicle hire or any other associated costs.
  • The defective products must be returned for inspection prior to any replacement products being issued.
  • Repairs must only be carried out by an authorised Milltek Sport dealer. In the event that repairs are carried out elsewhere, this Limited Warranty will be rendered void.
  • The failure of products must not have been caused by any of the following to be eligible for warranty
  • Misuse, unauthorised modification, accident, worn or faulty engine mounts, faulty hangers or clamps, excessive vibration, internal explosion or backfire.
  • Non-standard use, the fitting of the part to a vehicle for which it is not intended or the application of insulating exhaust wrap.
  • The vehicle to which the products are fitted must be serviced in accordance with manufacturers recommendations and a record of this service is to be retained and shown in the event of a warranty claim.
  • Clamps, olives, sealing rings, flexible couplings and fittings are not covered by the warranty.
  • This warranty does not affect your statutory rights.

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