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Vancouver, WA, USA 360-260-2675 M-TH 9A-5P | F 9A-12P PST

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2014-2018 Mazda 3 Rear Sway Bar

Price: $249.99
Price in points: What are Points?250 points
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Remove the tendency to overpower the front tires under hard cornering and minimize traction robbing body lean with the CorkSport Mazda 3 Rear Adjustable Sway Bar. Compressing inside suspension, the CorkSport Mazda3 Rear Sway Bar effectively increases the spring rate on side of the suspension which is compressed most and its adjustability allows you to fine tune the handling. Each Mazda 3 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 endlink attachment points

Adjustable: Two endlink attachment points to change the sway bar from 130% to 220% stiffer than stock.

Single Piece CorkSport Swaybar

Single Piece: A single piece is used to create the rear sway bar which adds strength by removing weak points such as welds.

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.

The CorkSport Advantage:

  • Extra Value: Includes Billet Sway bar brackets, at $79.99 value.
  • One piece design: CNC bent for precise fit and made from 25mm 4130 Steel.
  • Adjustable: Two adjustable locations for the end links to install allowing you to change how much the bar uses the other side of the suspension. 130%/220% stiffer than stock on the Mazda 3.
  • Made in the USA: Engineered and manufactured by CorkSport in Vancouver, Washington.
  • Durable blue powder coated finish: can survive the winter driving in areas where roads are salted for snow and ice.
  • CorkSport Service and Support: Receive a two year limited warranty, full color installation instructions, all of the needed installation hardware, and knowledgeable telephone support.

  • Install time                  2/5 Difficulty               2 year warranty       No CEL

Took me about 45 minutes to install. Few install tips that helped me, lower the rear subframe some, and you’ll get more access to the sway bar. Once loose, it came out easily and the new one went in place. It comes with grease and zerk fittings to add grease later as well.

I’ve noticed a lot better cornering with this sway bar, it doesn’t feel like the rear end wants to break free anymore. Amazing product!
I have installed stiffer rear sway bars on almost every car I have owned in the last 20 years. They are ALWAYS worth it. Factory rear sway bars (if equipped) are always "just good enough" and really, are never worth a crap in my opinion. I installed this bar on the softer setting along with the front strut bar and my 2017 M3 in lowered on CorkSport lowering springs and Koni Red shocks. I may move up to the firmer setting once I get a stiffer front sway bar so I can add in just a touch of oversteer. Right now I have hardly any body roll and just a slightest touch of understeer.
The swaybar itself is great. It GREATLY improves the handling of the car, really stiffening up the rear and heavily reducing body roll. I genuinely love the product but it does have a couple flaws; neither of which are with the swaybar itself.

There are only 2 gripes with this product; first being the install instructions. Instructions say to leave the subframe as-is, which leaves you with VERY little space to work with. I personally recommend you lower the subframe, not completely remove it as it would be quite difficult to get it back. Simply lower the subframe by loosening the 4 nuts holding it in place on their studs, lower on the threads. Do this slowly as to not add too much stress, but also do not worry as the studs are ridiculously strong for subframe mount points. This will allot you much more space to remove the oem swaybar and install the new one.

My second gripe is with the provided swaybar brackets. The walls of the brackets block off easy access to the top nuts that you need to tighten on the swaybar. I tried an assortment of tools and attachments to make it easier but it really is a pain.

If you are looking to improve the handling of your car I highly recommend this. Just be sure to save yourself the headache and lower the subframe a bit in the process!
Well worth the money. I would always lose the rear end when taking sharp turns like it was disconnected, but this solved it.

- increased grip to front end
- reduces chassis flex, sinking
- eliminated all body roll
- ties rear end to front end for better handling
Really noticed the difference right away from upgrading, the CS sway bar is significantly thicker than the OE one which in itself is a big upgrade. With the stiffness settings it changes even more, I'm a local to the Dragon so I'm out there a lot and the car handles the corners so much better with this. Highly recommend for anyone wanting to help out their suspension
If you want more handling performance out of your third gen this is the first mod I would consider. I have run this rear bar since 2016 on two vehicles and have not been disappointed. The adjustability really becomes an advantage as you upgrade your other suspension components as you can fine tune the handling as your skill and tires allow.
Sooo there is different bars out there. Some more some cheap. This bar is absolutely soild and great performer. Wouldn't matter what brand you go remove and install is a bear for rear. Finish was great. And I done mine in my driveway on Jack's, laying on my back. Yes it sucks. But the payout is amazing. This is a must do for anyone wanting better performance. I have my bar matched to Moog links, Bilsteins b8s, and Megan springs and it's solid. Have mine on the firm setting. While yes most looking for looks, this a performance bar. It will not ride "like stock" because it's better and safer than stock. Know what your getting into when you buy suspension parts. Also my Mazda 3 is superchargered and this bar help shifting of power back to my front where it belongs. Thanks corksport. Seriously appreciate you. And others who are doing this bar....know what your modifying you suspension to do. Stop thinking your going to get stock performance with performance parts. This bar is solid and 100% trust that my 3 will handle what I give it now.
You definitely do feel the rear end stiffen up while turning. Depending on your ride quality where if you want it stiff or soft, you can adjust that with the end links when installing the rear sway bar. In terms of installing, if you have worked with suspension components before then this is fairly easy. I find it best to use a ratcheting wrench and a pole where you can slip it into the wrench and use it as leverage to break the nuts loose on the brackets - or a pass through socket works just as fine. If you hear clunking then your endlinks are not tight enough, the nuts on the brackets or you didn’t grease the brackets enough. The directions are some what clear but do be careful when pulling out the factory sway bar because there are couple lines that you might tug on while removing the sway bar.
Going to say this out front: This is not the easiest install. I managed without dropping the subframe, but I recommend doing it, as it makes the bolts easier to access.

Other than that, with a bit of clever finagling this can be installed by an amateur with basic tools.

Drive feel is fantastic. I'm running on 9.5 wide wheel set for grip (no tilty) and while the hatch is a decent corner machine, at the limit it was prone to understeer. There was not a huge margin of error between limit and skid, which can be sketchy. The sway bar is a night and day difference. The car is much more prone to oversteer, which can be induced at wheel. Unsettling the chassis can produce understeer, but it is a lot less common and easier to manage. This is a must have mod for racers and corner carvers. Personally I autocross and this made a huge difference in my ability to take the higher speed turns.
Pros: stiffens the car without being uncomfortable, turning is much more responsive, coming out of corners is quite fun now

Cons: installation was difficult, instructions could use improvement

This is the first modification I made to my otherwise stock 2015 Mazda 3 (2.5L). I put it on the stiffest setting on installation.

I have found cornering to be significantly improved over the stock. This is dramatically apparent when you compare the stock sway bar to the CS one. It is nearly twice as heavy and quite a bit more stiff. The front end no longer gets washed out under heavy acceleration from a corner and I feel much more confidence while cornering (especially at greater speeds).

I will say you should consider installing this on your car early. If you have any rust you will be in for a fun time getting the old sway bar out. Having the right tools would definitely have helped as well. I think CS kind of low balls it by ranking it a 2/5. The instructions could also use some additional editing and proofreading, some parts are ambiguous or not easily interpreted (i.e. "Do not loose this part" do they mean "lose" or "loosen"?) and I think some more effort could be put into improving this document.

With that being said, as an amateur mechanic in their driveway I was able to get installation done after a full day underneath the car (and a lot of swearing). I think in hindsight I would have it done by a professional. Right now I plan to get everything re-torqued and make use of the Zerk fitting to ensure longevity and peace of mind.

In closing, I think Corksport offers good value for this product. It sets out to improve one of the biggest flaws in our car and I have been impressed from the quality of life improvement
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