Remove the tendency to overpower the front tires under hard cornering and minimize traction robbing body lean with the CorkSport Mazdaspeed 3 Rear Adjustable Sway Bar. Compressing inside suspension, the CorkSport Mazdaspeed 3 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 Mazdaspeed3 swaybar includes machined 6061-T6 aluminum swaybar brackets which are more durable than the stamped steel design common with other swaybars and look sharp with an anodized black finish.
The CorkSport Advantage
Adjustable: Two endlink attachment points to change the stiffness between 114% stiffer than stock, or 180% stiffer.
Single Piece: A single piece is used to create the rear swaybar which adds strength by removing weak points such as welds.
Billet Swaybar 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 Swaybar brackets, at $79.99 value.
One piece design: CNC bent for precise fit and made from 28.5mm 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. 114%/180% stiffer than stock on the Mazdaspeed 3.
Made in the USA: Engineered and manufactured by CorkSport in Vancouver, Washington.
Durable blue or black 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
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....
CA_MS303/27/2018, 01:22 PM
WOW, perfect for cutting out much of the understeer and flattening out the handling. Awesome!
Rev David Poedel04/26/2017, 03:48 PM
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.
John D07/01/2016, 08:38 AM
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.
Chris Schraml05/23/2016, 03:41 PM
First thing is first, if you are contemplating this upgrade, just stop....and buy one. This is one of the best parts that I have added to my setup! I started with a Corksport Coilover kit, which was also an awesome purchase, but after adding this bad boy, holy sh*#.
The rear end feels a tad sturdier(definitely more stable), but the most noticeable change was steering, and just overall control/stability of the vehicle. Cornering was fun before, but it now takes a lot less concentration to keep things under control, even taking the corners at higher speeds is a piece of cake.
Seriously one of the best upgrades I have done for this platform. It honestly blew my mind the difference it made.
Jordan Colton01/02/2016, 07:41 AM
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.
The product itself seems well engineered. I'm particularly impressed with the included sway bar brackets (they may be the #1 reason to purchase this bar over any other brand). I would not hesitate to purchase this product again.
Erik L10/09/2015, 08:12 AM
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,
Aaron Waller10/02/2015, 08:46 PM
The rear sway bar comes nicely packaged with stickers, great instructions, and looks wonderful. These have finally gotten rid of my issues with squeaking bushings, and hugely reduced body roll. The attention to detail is great. Take your time installing and have fun.
Corksport is the model by which all companies should strive to be, however them not following in suite is what makes me keep coming back for more.
The customer service is spectacular, when I call with questions I get to speak to an engineer. Being an engineer, there is nothing more frustrating than sales people BS-ing their way through your questions to get to the gold. This is a company that builds a relationship with their customers, does what they can to help them, and build great products because they care.
Eric Burbank09/14/2015, 12:03 PM
this totally changed the way the my Speed3 drives around corners... i was skeptical about how much difference it would make but it really plants the rear of your car and frankly now i can't wait to get the front one.... the billet mounts were also a really nice touch
sucks they were out of black though
James Mueller07/28/2015, 10:17 AM
Love this RSB. Really cuts down on understeer and improves cornering significantly. Makes road rallys a lot more enjoyable!