Modular Mazdaspeed 3 Downpipe

Get maximum turbo performance and dramatically increase power and torque with the CorkSport Mazdaspeed 3 “Modular Series” 3 Inch Downpipe. The new V2 design uses our modular system to improve flow, enhance fitment and make installation simpler in your MS3 engine bay. The design utilizes a cast stainless steel bell mouth with a v-band connection to 3” stainless steel piping. Available with fitment options for an upgraded 3-inch/80mm exhaust or fitment with a stock/2.5” exhaust. Plus, it fits all years of MS3! Check out more information and pictures down below!

Read The BlogCorkSport Mazdaspeed 3 Downpipe Now Available with High-Flow Catalyst

The CorkSport Advantage

Performance Focused:

The CorkSport V2 Downpipe drastically improves exhaust flow compared to the restrictive OEM downpipe. This results in gains of up to 50whp & wtq on a stock turbo car with an intake, HPFP upgrade, and a tune. Even larger gains could be expected for cars with an upgraded turbo!

Mazdaspeed-3-cast-bellmouth for v2 downpipe

Fitment Inspired:

Knowing the installation can be a huge pain when upgrading your downpipe, we aimed to make installation and fitment much easier with the V2 design. The modular design with a separate cast bell mouth and v-band connected pipe section does just that.

With the 2-piece upper and lower sections of the downpipe, all downpipe nuts are now easier to access as you do not have the lower section in the way while tightening. This allowed for easy stud & nut access as well with cutouts designed to fit sockets & wrenches. Lastly, should you ever need to remove the downpipe or turbo for maintenance, the bellmouth portion can stay attached to the turbo! Just disconnect the v-band clamp and remove the lower DP section from the exhaust.

Exhaust Fitment Options:

The CorkSport V2 Downpipe is designed to fit an upgraded 3” or 80mm exhaust for no flow restrictions. If you want a more sleeper build, there is also an option that necks down slightly to work with OEM and 2.5” diameter exhausts.

Both options will require your catback to use the OEM-sized flange with the donut-style connection for an easy installation with your existing pipes. Both sizes are offered only in a catted setup that is for race use only and is not street-legal in areas with emission controls. The cat itself is a high-flow 3-way metallic foil 300cel CAT with a 4-inch outer diameter.

Materials & Manufacturing:

At the turbo side, the CorkSport modular downpipe uses a cast 304 stainless steel bellmouth for strength, reliability & simplicity. The piping uses a CNC machined V-band flange TIG welded to mandrel bent 304 stainless piping. CNC machining ensures a leak-free seal, TIG welds ensure high strength, and mandrel bends ensure smooth exhaust flow.

Hardware and Accessories:

Included with your modular 3” downpipe is everything needed for installation. This includes a stainless v-band clamp for the bellmouth to DP connection, brand new downpipe mounting studs & lock nuts, and even an O2 sensor harness extension.

The thing we’re most proud of is our custom MLS downpipe gasket included with each kit. We port-matched it to the DP bellmouth & CST6 to ensure no flow restrictions whatsoever!

NOTE: if you order the OEM-sized outlet option, we recommend you purchase a new donut gasket, as it is not provided. 3” sized outlets include a new donut gasket to suit the larger pipe diameter.

For off-road & race use only.
HPFP upgrade and tuning required for proper and safe operation.
A check engine light (CEL) will be illuminated on catless and some catted setups as a result of installation.
Take note of your catback exhaust size before ordering. There is a different downpipe whether you have a 3inch/80mm exhaust or an OEM/2.5” exhaust.
AXL-6-114-18 Fits Cat-Back Exhausts like the CS 80mm and other 3” exhausts that use the OEM style flange.
AXL-6-114-19 Fits Cat-Back Exhausts like the OEM and other 2.5” exhausts that us the OEM style flange.
Only fits on turbochargers with OEM downpipe flange shape.
If you have a CS turbo and are running an EWG off the turbine housing, the wastegate will need to be moved to the turbine housing directly and a new dump tube used. CS part number GEN-6-575-17 is needed and it is available for purchase HERE.

Additional Features

Vehicle Fitment: 2007-2013 Mazdaspeed 3
Developed in America: Designed, tested, and validated in Vancouver, Washington, in the Pacific Northwest.
CorkSport Service and Support: Receive a 2-year warranty, full-color installation instructions, all of the needed installation hardware, and knowledgeable telephone installation support.
Release Blog:#

How To Install the the Mazdaspeed Downpipe

It will take you Approx. 5 hour to install.

5 hour Install Time

4/5 Difficulty

2-Year Warranty

Yes CEL

Just installed this past saturday and am loving every minute of it. It sounds great with the CorkSport Race Pipe and CorkSport Axle Back exhaust.

John Carlson03/12/2013, 09:00 PM

Installed this baby catless with the racepipe and the sound is incredible at WOT!!!!!! idles deep like a champ and screams and im pushed back into my seat!!!!! Best upgrade by far!!! Gained about 20WHP when flashed to Stage 2OTS :) but it feels like so much more. Holding high in the 18s for PSI and I peak at 19.4 This is a completely new car now!!!!!!! Thank you CorkSport

Sean Strout01/27/2013, 08:22 PM

Wow! Install was a touch of a PITA, but managed with help. I love the divorced waste gate. I was a little worried about the noise. Gains are excellent, turbo spools faster, and the noise is nifty. Corksport delivers and excellent DP.

Galen S01/22/2013, 04:50 PM

AMAZING product from Corksport and has created quite a buzz on all the forums. This Down Pipe awakens the 2.3 turbo charged engine. This Down Pipe along with the Corksport Race Pipe and Cat-Back system are just what the turbo ordered! Finally a quality product backed by a company who stands behind its products and you have the perfect combination!!!

Jason Arteago11/23/2012, 03:53 PM

I just installed the highflow catted version of the Corksport Downpipe on my 2010 Mazdaspeed 3. The first thing you notice is how smooth the car feels along the whole RPM range. Second give it some gas and in the lower gears there is a whole lot more pull and it gives you a smooth delivery of power and faster turbo spool up. I am happy with the pipe so far!! I recomend Corksport to anyone with Mazdas! Watch out for tha last bolt on the old pipe it's a killer

Robert Kreider10/20/2012, 09:58 AM

man this thing look bad ass. It's easy to install. The hard part was getting the stock one off. Just like everthing corksprot make it's great. thanks for helping me make my car faster

Shannan Stalnaker05/22/2012, 05:56 PM

Awesome DP! The Unique Divorced Waste-gate Design is one of a kind, no other design out there is quite this awesome. Cant wait to get this beast installed. Thanks Corksport!

David Murray02/26/2012, 10:37 AM

Picked up 30-50 ft pound of torque on Dynodynamics dyno below 2500rpm on my fully bolted '08 with Cobb Acessport Stage 2 with 93 octane tune. 316 ft lb at the wheels--and Dynodynamics reads low! Just nuts--and you're nuts if you don't get one.

Crosbie Watler10/26/2011, 09:47 PM

Great fit and finish. Combined with my other Corksport parts (Intake, TIP, and TMIC) the car is quick. I am at the limit of the stock turbo with my Stage 2 tune and these parts. As always, I am impressed and will recommend to anyone in the market for a downpipe.

Wilson Buck08/03/2011, 09:25 AM

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On mine (the 80mm catted version), the upper 02 sensor is capped off. Didn’t realize it wasn’t supposed to be until it was already on. Was this just a mistake in mfg. or is there a reason it would be capped off?

Asked by Randy | 07/22/2023, 05:38 PM | 1 answer(s)