PRE-ORDER ONLY - Expected to Ship in ~June 2026

Improve your Mazdaspeed's handling with the new CorkSport Rear Adjustable Sway bar. The Mazdaspeed from the factory has the tendency to overpower the front tires under hard cornering. The CorkSport Mazdaspeed 3 Rear Adjustable Sway Bar resolves this by effectively increasing the spring rate of the compression side of your Mazdaspeed 3 while turning. The adjustable design allows you to fine-tune the handling with an increase in stiffness of ~45% or 80%, depending on your driving needs. Each Mazdaspeed3 sway bar includes machined 6061-T6 aluminum sway bar brackets, which are more durable than the stamped steel design common with other sway bars and look sharp with an anodized black finish.

The CorkSport Advantage

Two Speed 3 sway bar end link attachment points

Adjustable:

Two end link attachment points to change the stiffness between 45% stiffer (1305 lbs/inch) than stock, or 80% stiffer (1603 lbs/inch).

Single Piece:

A single piece is used to create the rear sway bar which adds strength by removing weak points such as welds. CNC bent for precise fit and made from 28.5mm 4130 Steel.

Bushings are included with CorkSport's Mazda sway bar brackets.

Billet Sway bar Brackets:

Superior bracket design with grease fittings for easy servicing with 90a durometer polyurethane, our brackets and bushings are the last you will need. Once installed, the reduced bar movement gives you extra confidence when taking corners. Durable blue or black powder coated finish: can survive the winter driving in areas where roads are salted for snow and ice.

Additional Features:

Fitment: 2007-2013 Mazdaspeed 3.
Fitment: Will fit a Mazda 5, but also requires Mazdaspeed 3 Endlinks.
Designed in America: Designed CorkSport in Vancouver, Washington.
CorkSport Service and Support: Receive a two-year limited warranty, full color installation instructions, all of the needed installation hardware, and knowledgeable telephone support.

How To Install The Mazdaspeed 3 Rear Sway Bar

It will take you approximately. 1 hour to install the CorkSport Mazdaspeed 3 Rear Adjustable Sway Bar with our easy-to-use color instructions.

1 hour Install Time

2/5 Difficulty

2-Year Warranty

No CEL

Great product. Tracked the car two days after installing the front and rear sway bars and it was flawless. Great job CorkSport!

Micheal Rockwell-Pate03/04/2014, 12:34 PM

Great product. Tracked the car two days after installing the front and rear sway bars and it was flawless. Great job CorkSport!

Micheal Rockwell-Pate03/04/2014, 12:34 PM

Will this bar fit on a 08 mazda 3 2.0L? And how many mm is the bar?

Dan02/10/2014, 10:54 AM

Will this fit a 2012 mazda 3 sedan?

Jack P.12/28/2013, 12:12 AM

This is a night and day difference OMG I did mot expect this much.

I noticed the improvment instantly. I can take turns like a champ no hesitation no 2nd thoughts. Winner status!

Matthew Newton10/02/2013, 01:26 AM

will this fit a 2012 SA hatchback?

CorkSport Reply:Yes

Dori08/22/2013, 09:10 PM

This sway bar is definitely a must if you want to improve the handling of your Mazdaspeed 3. It reduces body roll and gives the car a more solid feel. Furthermore, it diminishes under steer when attacking a curve .Everything it said it would do. Just another excellent product from Corksport 5/5

J.M. Savoie08/08/2013, 08:00 AM

will this work on 2012 mazda 2.0 non skyactive?

CorkSport Reply: You can fit the swaybar on a Mazda 3 if you upgrade the end links to the Mazdaspeed 3 type.

Tony M06/10/2013, 05:08 PM

Easy install and good instructions. I have it on weakest setting but that is only 114% stiffer than EOM. Only other setting is 180% stiffer, will try that next b/c weaker is very same difference. Why such extreme differences:114% or 180%?? nothing in between. I don't race my MS3 but I hope to get a little more than 14% better handling. I read that too stiff will make tires slide (interstate ramps be hardest cornering for me).

Will the 180% make me slide on the interstate ramps on rainy days?? ~a little worried~ If I slide, I'll repost

Barry White06/04/2013, 09:12 AM

Put it on my 2013 Speed 3, on the stiffest setting. Probably should not of been surprised, but i was. Holy S*** what a difference it makes. I am completely happy that i did this as my first mod !!

Jon Overstreet05/13/2013, 05:56 PM

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Can I request a different color on checkout? Only option is Blue.

Asked by TJ Nguyen | 06/10/2025, 11:18 AM | 1 answer(s)

Will this work on non-mazdaspeed models? I have a 2012 Mazda 3 I touring, with the Skyactiv engine

Asked by Nicholas Schwartz | 08/03/2022, 11:55 AM | 1 answer(s)

I currently have Corksport's older rear sway bar with the 3 hole settings. I no longer recall the stiffness rating for that bar and hoping you could tell me if the stiffest setting of your current rear sway bar is greater than the stiffest setting of my bar? Thanks in advance.

Asked by William S Mah | 07/09/2022, 08:34 AM | 1 answer(s)

What type of grease is recommended during installation?

Asked by Jake Stafford | 06/12/2022, 05:12 PM | 1 answer(s)

Will this fit a 2008 MZ3 Hatch (BK)?

Asked by Charles | 03/13/2021, 08:35 PM | 1 answer(s)

Is it better to tighten everything down when suspension is loaded or unloaded? i.e. on ramps vs on jackstands?

Asked by Ed | 10/26/2017, 06:13 PM | 1 answer(s)

So you only offer end links for the front sway bars, not for rears?

Asked by Jesse | 09/20/2017, 01:17 PM | 1 answer(s)

Does this fit both the Gen1 and Gen2?

Asked by Randy | 12/15/2016, 05:44 PM | 0 answer(s)

Do I need to get my car alligned after installing this?

Asked by Kyle | 06/20/2016, 05:31 PM | 1 answer(s)

How often do you need to lubricate?

Asked by William Mark | 02/26/2016, 09:04 AM | 1 answer(s)

will I need new endlinks if I install this on a Mazda 3 sky?

Asked by Tyler | 02/03/2016, 09:31 PM | 1 answer(s)

Since there is no FAQ section on the front sway bar, how much do the front and rear sway bars each weigh?

Asked by Chandler Wendt | 03/18/2015, 09:47 PM | 1 answer(s)

Will these work with moog endlinks? Front and rear?

Asked by Sean Singh | 01/14/2015, 07:15 AM | 1 answer(s)

New post

Mazda performance parts financing is available with CorkSport

Looking to finance your parts purchase and want to get 6 months NO interest on any purchase over $199? Click on the image above for more details.

Fits Models

2007-2013 Mazdaspeed 3

2007 Mazdaspeed 3
2008 Mazdaspeed 3
2009 Mazdaspeed 3
2010 Mazdaspeed 3
2011 Mazdaspeed 3
2012 Mazdaspeed 3
2013 Mazdaspeed 3

Aaron Waller

10/02/2015, 08:46 PM

Comment
Wow, just went on a 2k km road trip on some of the best driving roads in the country and I was blown away by the improvements this sway bar made on my 2k13 MS3. I took people who had been in my car with 100% stock susp/chassis for spirited runs and they were blown away, many comments such as 'this is the best handling car I've ever been in", and considering these peeps, and the cars they own or have been in, that's a significant compliment. especially on OEM tires/struts.

Install is easy and straight forward, the most difficult part of the install is lining up the billet brackets evenly, but it's really not that hard if you have a friend helping or a lift..

Please be sure to torque down everything properly, and even after using the supplied ES bushing grease it will not hurt to use the grease fittings to make sure everything is lubed proper.

I set my RSB on the 180% (stiffest) setting and loved it, was so surprised on how well my MS3 still took speed bumps and rough roads, feels as good as OEM in this department.

Just take your time installing it and take your time tightening/torquing everything down properly.. I love the black option for pretty much all the CS gear, it makes everything look stock and very sleepy ;)

When I first installed it, and drove my normal commute I couldn't tell how much of a difference it made. Once I had it on some of my fave driving roads it became immediately apparent that it made a HUGE difference, my car just failed to under-steer, and the ass end would kick out before anything bad happened to the front end.

Cheers on another great Corksport product,

Erik L

10/09/2015, 08:12 AM

Comment
This is a great product, I'm very pleased with the results! I'm running OEM springs/shocks/wheels/tires on a gen2 MS3. My alignment is set at 1/32" toe in on each wheel. With the bar on the stiffest setting, the ride during normal city driving has not become any harsher. During cornering the car no longer predominantly understeers and feels more lively. The car readily rotates and demonstrates mild lift-throttle oversteer on a tight radius highway on-ramp @ 50 mph.

Timothy Howell

02/02/2016, 07:30 PM

Comment
I just installed the RSB on my 2013 Speed3. I was surprised at how simple this piece was to install. It took me about 45 minutes from start to finish. My only suggestion is to wear rubber gloves when installing as the grease is really sticky. The rear of my car feels really stable and absolutely what I was looking for. Thanks again Corksport

Joe Furtney

07/06/2015, 10:39 PM

Comment
over 14 months after I put it on....just get it...front and back. Strongly consider the 4 point brace for the front end too. two words.... Go Kart.

nuff said. Thanks for the great enhancement Corksport

Chris Schraml

05/23/2016, 03:41 PM

Comment
Put this RSB on this weekend. Easy to install. The only PIA part was getting the top bolt on the driver side bracket to go in. This just due room(part of the heat shield is there, along with man hands). Also did not have to take end-links completely off, just unscrewed top nut to the top. Noticeable difference of body roll or lack of roll during spirited cornering. One-piece design. I highly recommend.

John D

07/01/2016, 08:38 AM

Comment
For me this upgrade is by far the most noticeable and easiest change to my Mazdaspeed 3. I thought the OEM rear sway bar was impressive but the Corksport RSB puts the OEM to shame. So much fun now taking corners. I can't wait to upgrade the front.

Rev David Poedel

04/26/2017, 03:48 PM

Comment
WOW, perfect for cutting out much of the understeer and flattening out the handling. Awesome!

CA_MS3

03/27/2018, 01:22 PM

Comment
In December of 2016, I installed the rear sway bar on my 2011 MS3, which had an otherwise stock suspension. Installation straight-forward and can be done in under an hour, including time to lift the car and setup. Some of the bracket and end link wrenching angles are slightly awkward, and I found a 0.5-in drive to be helpful on the bracket bolts. I used the stiffest of the two end-link positions.

Driving impressions...I appreciated the “tucked” in feeling of the rear end during cornering and decreased body roll, which made canyon carving more comfortable. In my experience with aggressive street (not track) driving, the RSB on its stiffest setting does not turn the car into an unpredictable drop-throttle oversteer monster, even in lower traction conditions. Breakaway is gradual and predictable. My suspicion is that the large degree of static camber and camber gain in the rear suspension help with cornering traction.

In all, I am very pleased with this RSB kit. The fitment is excellent and the spring rate is perfect. The brackets are impressively high-quality pieces, and I have had no squeaking issues to date. The RSB works best with a stiffer FSB - see my review there for more details....

GCPhotographers

04/25/2018, 07:31 PM

Comment
drive with confidence. I wanted this for a while and betrayed CS for a different brand and it didn't work out too well and I suffered greatly. I have over 10 CS products so far and they haven't get me down.

Ryan Olson

07/27/2018, 10:43 AM

Comment
I've been driving with this for about 2 weeks now on the "low" setting I guess you could call it, and this has definitely corrected the issue with understeer. I'm actually curious about trying the "high" setting just to see how it feels. As always CS provided absolutely beautiful craftsmanship. I mean the brackets alone are a true work of art.

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