CORKSPORT Mazdaspeed 3/6 MZR Bypass Valve

Add performance and style while protecting your turbo with the Patent Pending CorkSport Mazdaspeed MZR Bypass Valve. Using an innovative patent pending design utilizing a wave spring, we were able to reduce the spring height of the OEM Bypass Valve by 50%. This size reduction provides the same amount of force while accelerating the speed of the valve. By increasing speed the Bypass Valve effectively increases the life of your turbo by preventing premature wear since the BPV can safely move at speeds 33% faster than stock or other valves. With the extra space allowed by the spring, we were able to increase piston size by over 30%. The increase in size means the bypass valve has a larger venting area, which reduces the time it takes to vent air, allowing larger turbos better venting. Together the smaller size of the spring, and the piston redesign means the body of the valve was reduced. This means you don't have to worry about interference with key parts such as airboxes, custom turbos, intercooler kits, or other modifications that might need the room. Thanks to these innovations the patent-pending CorkSport Mazdaspeed MZR Bypass valve will be a welcome addition to any turbocharged engine bay.

*This kit comes with everything you need to upgrade from your factory BPV*

The CorkSport Advantages:

Fitment:Mazdaspeed 3, Mazdaspeed 6, Mazda CX7
Larger Piston Area: Increased piston area allows greater venting.
50% Decrease in Spring Size: Smaller spring is 33% faster at reacting
Made from billet aluminum: For a lightweight and durable build.
Compact Size: Patent pending design uses less space compared to the OEM bypass valve means you have more room for modifications.
CorkSport Service and Support: Receive a two-year limited warranty, full color installation instructions, all of the needed installation hardware, and knowledgeable telephone support.

Patent Pending

How To Install the Mazdaspeed MZR Bypass Valve

It will take you Approx. 1 hour to install.

1 Hour Install Time

1/5 Difficulty

2-Year Warranty

No CEL

Just installed. Fit and finish is top quality. I think it took 15 minutes to install. Sounds great and feels better then the stock. Holding boost better then the stock. Thanks Corksport.

Bret Nicoletti02/27/2014, 09:34 PM

I could not beleive the improvement over the stock BPV. The spool up is so much quicker and the sound is great. it holds boost all the way. I am very impressed with this product. Not to mention the price is very good.

Kevin Smith02/22/2014, 05:38 PM

Does this bypass valve recirculate ?

Andrew02/20/2014, 05:08 PM

just installed the MZR bypass valve on my mazda 3 mps,thankyou lads from corksport it sounds great.much better than standard one.

Paul Bolter02/16/2014, 11:06 AM

ive ordered the MZR bypass valve,is it lounder than the stock valve ?

Paul02/11/2014, 03:32 PM

Has held up perfectly to 21p.s.i. for me, and much more for other users. Far quicker boost recover over OEM. Super quick dump to re circulation. You won't find a better performing BPV for this price point, even for ones costing over twice as much.

The Nut02/11/2014, 01:16 PM

I have the same question, if this BPV is better than de Forge, i have Corksport SRI

Frank02/07/2014, 08:04 PM

Will this BPV make any sound change with the stock air intake system?

Yannick02/07/2014, 08:22 AM

To tell you the truth i did not see or feel much significant change after i install corsport bpv

Ricacruz02/05/2014, 02:00 PM

wow, this lil sucker is quiet! as quiet or quieter than my stock bpv. very well designed and compact too. lots of space left for a big intake or something of that nature. install took less than 5minutes too. so easy!! thanks CS!! you guys rock!

Steven Hughes02/03/2014, 05:19 PM

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Would this be Compatible to a 2.0 Mazda 3 04-10 motor ?

Asked by Jordan Ruiz | 08/13/2022, 07:59 AM | 1 answer(s)

Can I use a gasket instead of o-ring if desired, the BPV I am replacing uses gasket type. Thank you V/R Anthony

Asked by Anthony | 09/08/2019, 02:55 PM | 1 answer(s)

do i need to get a gasket to place it in between the manifold and BPV?

Asked by DAVID | 04/12/2019, 03:23 PM | 1 answer(s)

heard that bypass valves can affect engine longevity, is that the case?

Asked by Jesse | 06/04/2018, 11:46 AM | 0 answer(s)

Can I use air tool oil to relubricate the piston and rings like the vta valve? Or is there a better option?

Asked by Terrell Blackman | 11/07/2017, 07:43 AM | 1 answer(s)

Can you please tell me if this comes pre lubed? Thanks

Asked by Daniel Blanchfield | 09/26/2016, 04:56 PM | 1 answer(s)

Just to verify, this will pass smog in California?

Asked by Garrett | 12/19/2016, 12:53 PM | 1 answer(s)

Is this bpv better then the mazdaspeed 3 duel vta bpv?

Asked by Eden | 12/20/2016, 06:30 AM | 1 answer(s)

Would this fit my stock 2008 ms3?

Asked by Pascal Cadieux | 10/30/2016, 02:44 PM | 0 answer(s)

I am pretty sure my stock valve is leaking at bout 19PSI. While I am using the stock turbo now I may want to upgrade later and increase the boost. I want to know how much boost this valve is designed to hold. I understand that it vents fast and that is great, but I want to make sure it also holds boost. If it sounded like Stock I would like it better, just not a fan of drawing additional attention. Thanks Jon

Asked by Jon Gatewood | 05/22/2016, 05:17 PM | 3 answer(s)

What boost PSI will this valve hold and is it adjustable?

Asked by Jon Gatewood | 05/13/2016, 07:46 AM | 3 answer(s)

Will this fit on my 2010 Mazda 3 even if it doesn't have turbo?

Asked by Travis Certeza | 04/08/2016, 03:58 PM | 0 answer(s)

Will this bpv work with if I have stock intake with box?

Asked by marty03 | 04/08/2016, 11:43 AM | 0 answer(s)

Will this part fit an 08 cx7 awd

Asked by Joseph | 02/24/2016, 10:35 PM | 1 answer(s)

I do not hear any sound? is this normal?

Asked by Francisco Sanchez | 02/23/2016, 04:26 PM | 1 answer(s)

Do you really have to clean it every 6 months?My stock 2013 which I got with 3 Miles on it now has 9500 Miles in two years has never been cleaned.

Asked by Kirk | 07/22/2015, 11:17 AM | 1 answer(s)

Is it possible under low pressue for the valve to not open up. At idle ill rev to 3k i get a whistle that unwinds as the rpms do almost sounds like compressor surge.

Asked by Stephen Duran | 06/30/2015, 10:17 PM | 1 answer(s)

Would like to know if this particular bpv would fit and work properly on 2006 ms6 being that the Ms3 has the same motor and turbo?

Asked by Damien | 06/15/2015, 08:52 AM | 1 answer(s)

how does the CS BPV compare to the Forge V2 BPV? and why CS over Forge? thanks for the help.

Asked by Michael | 04/13/2015, 08:39 AM | 1 answer(s)

if I added this bypass valve to my stock car (only have an axle back exhaust from corksport) would I need to get an access port as well as have it tuned or would this function perfectly fine without an access port and or tune?

Asked by Dustin Mauger | 03/03/2015, 07:17 PM | 1 answer(s)