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Mini Cooper S Downpipe Upgrade 3 Hi-flo™ Off-road Only

Mini Cooper S Downpipe Upgrade 3 Hi-flo™ Off-road Only

Mini Cooper S Downpipe Upgrade 3 Hi-flo™ Off-road Only

Mini Cooper S Downpipe Upgrade 3 Hi-flo™ Off-road Only

Mini Cooper S Downpipe Upgrade 3 Hi-flo™ Off-road Only
Select a Item below for more information:
Alternate Products
MINI Cooper Downpipe Milltek Gen2 R55-R61 Off-Road Only
MINI Cooper Downpipe Milltek Gen2 R55-R61 Off-Road Only
In order to maximize performance from your upgraded Turbo, you need to minimize the backpressure. This unit uses 3" diameter stainless pipes with the outlet tapering down to 2.5" for compatibility stock and aftermarket exhaust systems.

NOTE: These products are NOT street legal and can only be used for OFF-ROAD or TRACK applications.


[ ] 100% hand crafted in the USA from premium 304 Stainless Steel - flanges and O2 bungs included!
[ ] Water-jet cut 304 Stainless cat-back flanges, and CNC'd 304 Stainless V-Band flanges.
[ ] 100% TIG welded, argon back-purged.
[ ] Lifetime warranty against any manufacturing defects given to original owner.
[ ] We do NOT grind/polish our welds as some other manufacturers do. Grinding welds compromises the strength of the weld, and can lead to weld failure! Especially critical in applications exposed to temperatures in excess of 1200°F. Such temperatures will also rapidly deteriorate the polished finish.

Fits the following Cooper S models:

2007-2013 R56 MINI Cooper S Hatchback
2008-2014 R55 MINI Cooper S Clubman
2009-2015 R57 MINI Cooper S Convertible 
2012-2015 R58 MINI Cooper S Coupe
2012-2015 R59 MINI Cooper S Roadster
2011-2016 R60 MINI Cooper S Countryman
2013-2016 R61 MINI Cooper S Paceman

You may ask 'what's the point if the 3.0 inch downpipe tapers down to 2.5 inches'? Here are a couple reasons why the 3" downpipe improves performance:

[ ] The larger downpipe provide a greater area for the exhaust gases to expand - ie a greater pressure differential. The Turbo focuses the exhaust energy into the turbine to carry as much energy as possible. As the exhaust exits the turbo and expands, the energy dissipates so the goal is to have the largest area possible for the gas to expand - or a larger downpipe.

[ ] The inlet and outlet for the cat on the stock unit is 2.25", the inlet and outlet on this unit is 3". The oversized inlet and outlet greatly improves flow with significant reduction in back pressure. On an upgraded turbo, less backpressure equates to MORE HORSEPOWER. The larger the turbo, the more critical this becomes. It may not sound like much, but when you run a larger turbo - it makes a BIG difference! For maximum performance, run the De-Cat Downpipe (or Cat-less dowmpipe).

Available with or without the catalytic converter as well as coating options.

The De-Cat (Cat-less) downpipe WILL trigger the Check Engine Light.

Naturally, you should also upgrade your exhaust system and other components for maximum benefit.

More information on our Ceramic Coatings

The coatings we offer are capable of withstanding temperatures of 2000°F. In addition they offer excellent chemical and corrosion resistance and possesses excellent thermal barrier characteristics, providing a dramatic reduction in radiated heat. This means reduced under-hood temperatures, accelerated exhaust gas velocity and a longer life expectancy for the downpipes.

Ceramics stand above all other thermal barrier coatings currently being used in combustion chambers. Ceramics have characteristics shared by no other product, providing an unrivaled layer of thermal protection to piston tops, aluminum heads, stainless, iconel and titanium valves. Ceramics "move" heat, reducing detonation and increasing the effective oxidation of fuel. When polished, it provides a highly reflective surface that further aids in improved flame travel. Unlike previous ceramic coatings, ours is not subject to cracking and flaking, which can lead to extensive engine damage. In fact, Ceramic coatings actually strengthen the coated part. The cured "Cermet" provides a cap of material that can withstand far more heat. During testing when sufficient heat was applied to a piston to melt the aluminum, the Ceramic did not melt, rather it held the softer aluminum together.

The Satin Ceramic Exhaust Coatings we offer are the most advanced exhaust system coatings available. They are a very durable ceramic-reinforced coating available in various shades. When properly applied, it becomes the most effective thermal barrier coating available, increasing performance while extending component life, and has been tested to over 2000°F without lifting, cracking or flaking.

These products will probably trigger the CEL, so plan accordingly.

Special order items - allow 2+ weeks for delivery. Add another 1-2 weeks for coated downpipes.

NOTE: These products are NOT street legal and can only be used for OFF-ROAD or TRACK applications.

I have an 08 MINI Cooper Clubman r55 and I want to add turbo with a catless down pipe, I am wondering if you can suggest a kit or possibly put together a package for me?
We do not have a solution for converting the cooper to a cooper s with a turbo.
Aside from re-routing the exhaust, you will also need to deal with:
lower compression
lubrication to / from the turbo
auxiliary water pump and coolant to / from the turbo
intake plumbing including intercooler
cooper s uses direct injection, cooper does not
These are just some of the differences, there are many more.

Mini Mania Tech Team

The MINI Cooper Parts and Accessories Experts

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