The Performance Rear Motor Mount For 4th Gen Mazda 3 is Ready For Action

If you’re looking for a performance part for your Gen 4 Mazda 3 & CX30 to elevate the driver experience then the CorkSport Rear Motor Mount. This CS RMM is designed to fit any 2019+ Mazda 3 & CX30 whether it is AWD or FWD, Turbo or NA, MT or AT. The key focal point for this RMM is to offer the driver additional feedback for what the car is doing when driving hard. The CS RMM helps eliminate the excessive engine movement, increase throttle response and provide a more solid shifter feel if you have a car with a stick.  

Mazda 3 Turbo Skyactiv Polyurethane Mount

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Starting with the main body of the CorkSport RMM, it is manufactured from A356-T6 aluminum to provide a robust and light weight mount that effectively replaces the quite large and heavy OEM mount. The factory mount features a large rubber center section which contributes to the excessive engine movement and additional weight. For the CS RMM we decided to add smaller bushings towards the front and back of the mount which allowed us to save material and weight.  Below you can see the two RMM’s compared against one another.    

Mazda 3 Performance Race Poly Mount

Now onto the polyurethane bushings, which play a big role in the increased driver feedback and reduction in engine movement. We tested the selected 70A bushings extensively and found that they offer a good combination of providing both a noticeable improvement in the driving experience while not introducing to much extra noise, vibration, and harshness (NVH) into the mix for daily driving.

NOTE: NVH (noise, vibration, harshness) is a standard term used in the automotive industry.  NVH is a byproduct of changing some OEM components to aftermarket components in the pursuit of focused performance. Example of components that can increase NVH: engine mounts, clutch/flywheel, intake, exhaust, suspension, tires/wheels…and many more. 

During the first stage of testing we started out with only two poly bushings in the front of the RMM, but after further testing we found that adding an additional two bushing to the rear of the RMM provided much lower NVH while still reducing engine movement considerably.

turbo mazda 3 poly bushing mount

The last piece that is fundamental in the CS RMM is the bushing sleeves. The sleeves provide the ability to install hardware through the polyurethane bushing without having the bushing itself compress and possibly crack when applying torque to the bolt and instead transfer the force into the sleeve. The bushing sleeves are precision machined out of steel for strength and then zinc coated so they will not corrode over time and wear out the polyurethane bushing prematurely.

2021 Mazda 3 RMM Bushing Sleeve

Ok, so now how does the CS RMM improve the driver experience? Well, the factory RMM allows the motor to rotate a good amount which helps provide a smooth driving experience for around town, but this increase in engine movement decreases the throttle response and shifter feel.

2019 Mazda 3 RMM Bushing.JPG

This is because the motor is allowed to rotate a certain amount before the wheels do, so by decreasing the amount the motor has to rotate, allows the wheels to start rotating sooner, thus increasing the responsiveness of the car. This reduction of movement also provides a better shifter feel if you have a manual because there is less movement between the connection of the shifter and transmission.

4th gen mazda 3 Turbo Poly Rear Motor Mount

What to expect from the Rear Motor Mount:

From our testing in multiple R&D cars and beta tester cars and the thousands of miles driven…it’s awesome!  From about 2000rpm up to redline you are going to feel a smooth engine that loves to give you feedback on your throttle, shifting and engine braking.  Below 2000rpm to idle you may notice some vibration, especially when the A/C pump is in operation. 

Thanks for checking out the CorkSport Rear Motor Mount for the 4th Gen Mazda 3 & CX30! If you want to add this mod to your Mazda and get all the benefits discussed above, be sure to head over to the product page for more details.   

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Coming Soon: The New Turbo Inlet Pipe – Mazda SkyActiv-G 2.5L

The Design Logic

If you are a car enthusiast, own a new Mazda utilizing the awesome SkyActiv-G Turbo Engine, and have been searching the internet for performance parts then you probably know that CorkSport has been deep in development for this new Mazda platform.  Specifically, CorkSport has been working on the last piece of the intake system puzzle, the Turbo Inlet Pipe. 

This is the black plastic “tube/pipe” that connects the Short Ram Intake System to the turbocharger inlet.  While the SRI System adds some great turbo noises and power gains to the Sky-Activ Turbo, there is still more opportunity for additional performance and sound improvements.  This is where the new CorkSport Turbo Inlet Pipe steps in.  

Mazda 3 Turbo Inlet Pipe Concept Designed by CorkSport
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New Product – Mazda 3 Hatchback Rear Spoiler 2019+

Enjoying your 4th GEN Mazda 3 but wanting to change up the look? Introducing the CorkSport Performance Spoiler for 2019+ Mazda 3 Hatchback. We went for an OEM+ design that incorporates the great fitment and lines of the OEM aero kit spoiler but in a much more aggressive package. Taller, longer, and with an upturned rear edge, the CS spoiler add some much needed sportiness to the look of your 3. Available in multiple finishes to suit your budget and build, the CS spoiler is a great next mod for your build! Read on for more details and check out the product listing here to purchase.

2019 Mazda 3 Carbon Fiber hatch wing

We like the OEM spoiler but were disappointed at how insignificant it looks when installed, especially when paired with the fairly aggressive OEM front lip & rest of the aero kit. The CorkSport Spoiler takes design cues from the OEM aero kit spoiler however, the design is unique to CorkSport. We started from scratch and polled the community for design opinions before settling on a final design that is both higher off of the rear hatch than OEM and extends further rearward than OEM. The design is finished off with an upturned rear edge for a great “duckbill” style look which is aggressive without being too much. You’ll be turning heads, especially when paired with CorkSport Lowering Springs and a nice set of wheels!

Forged Carbon Mazda 3 hatch wing

Fitment was equally important as aesthetics when we designed the CS spoiler. We 3D scanned an OEM aero kit wing to get the exact mounting surfaces and edge profiles so that the CS version fits just as good as OEM. We use the same mounting locations as OEM as well. This means no drilling if you’re switching from OEM aero kit to CorkSport spoiler. If you do not have the OEM spoiler you do have to do some drilling, however, Mazda pre-marks the holes for a relatively easy install! By using the same mounting locations and more adhesive mounting tape than OEM, you can be sure your CorkSport spoiler won’t be going anywhere!

2021 Mazda 3 Turbo Duckbill spoiler

The CorkSport Mazda 3 spoiler is offered in three finishes so you can choose what is best for your build. Each option uses a fiberglass base with different top layers. Regular woven carbon fiber, forged carbon fiber, and basic black fiberglass are each available. The carbon fiber options feature a UV resistant epoxy top coat for great protection from the elements and a mirror like finish. The full fiberglass option comes in a satin black coat with some light scratches and will require some finishing. We recommend some finish sanding and a final layer of paint or wrap. The shape is the same for each unit however the purchase price varies so you can really choose the best option for your build & budget.

3 options of Mazda 3 rear wing finish

Finally, each CorkSport spoiler comes with all the hardware and accessories needed for installation. This includes mounting bolts, washers, mounting tape, and rubber washers for waterproofing. We even include new replacement OEM Mazda clips that almost always break with removing the upper trim panel on the hatch! All of this comes with full color install instructions and great customer service & support!

2021 Turbo Mazda 3 spoiler fits with the body style well

So if you’re ready to take your GEN4 build to the next level, check out the CorkSport Performance Spoiler for 2019+ Mazda3. We think it’s what the OEM spoiler should’ve been and you will not be disappointed! Don’t be shy to contact us with any questions!

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Cold Air Intake Systems Explained for your Naturally Aspirated & Turbo Mazda

Mazda 6 Turbo Performance Intake

Cold air intake systems, are they necessary? Are they worth the extra cost? Does it matter if the engine is turbocharged or not? Will the engine or its performance be hurt without one? We have repeatedly seen these questions on forums and social media groups regarding Mazda’s 3rd and 4th Generation Mazda 3 & 6. To help the Mazda community grow, learn about their cars, and what to do with them, we have written a blog that we hope will help shed some light on these questions and others. 

Most importantly, you will NOT hurt your engine if you use an SRI only on Turbo or Non-Turbo applications.  

What are the typical intake systems available for your Mazda? At CorkSport, we have two primary intake system setups: Short Ram Intake (SRI) System and Cold Air Intake (CAI) System. It is essential to distinguish between the two because you (the Mazda enthusiasts) will ultimately decide which system to use. 

Short Ram Intake (SRI) System

This CorkSport system consists of a filter, billet MAF housing, silicone coupler, a few clamps, and may or may not have a mounting bracket (depending on application). This system is efficient and straightforward (an unrestricted airflow path increases power). This system removes the factory airbox and snorkel. The cost is very effective for the results and provides excellent induction sounds. 

Mazda 6 Turbo Performance Intake

Cold Air Intake (CAI) System

CorkSport’s system consists of the SRI (as mentioned above) plus a heat shield or airbox designed to keep the engine bay heat away from the intake system’s inlet and helps direct cold air induction. This system removes the factory airbox and may or may not reuse the factory snorkel. The cost will be higher than an SRI due to the additional components involved and may muffle some of the induction noises but provide better heat control.

Mazda performance air intake heat shield

OK, is a Cold Air Intake System worth the extra cost and complexity? Does it do anything? Well, in our opinion, yes and no. We have tested this, and we have proven that a heatshield does improve (read reduce) “heat soak” of the intake system, BUT not in the ways most people expect. Below is some data from our 2018 Mazda 6 Turbo with our SRI and then also with our SRI + Heat Shield:

This first graph shows the vehicle idling for a period of time, much like sitting at a stoplight or in traffic. The red graph shows the SRI only, and the blue chart shows the SRI+Heat Shield. It’s pretty apparent the heat shield is helping reduce the amount of engine bay heat being ingested by the intake while the vehicle is sitting. The maximum temperature delta is approximately 15-20deg F. That’s a respectable improvement, and this lower amount of heat soak should, in theory, improve the vehicle’s acceleration from a complete stop. Now let’s look at a graph that combines idling and acceleration up to 50mph

The second graph indicates similar data for the stationary idling period, but more importantly, is what the data tells us once the vehicle starts moving. You see a small spike for both systems (this is due to the engine suddenly ingesting more air), then you see the air temp drop rapidly as the vehicle increases in speed. The vehicle’s forward motion/speed is important because that is how fresh cool ambient air enters the engine bay.

You’ll notice that both the red and blue graphs meet at the same point after the rapid cooling then have a small amount of fluctuation. In a nutshell, both the SRI and SRI+Heat Shield perform about the same once the vehicle is moving. Again, they perform almost identically once the car is rolling.

Next question, does it matter if the vehicle is turbocharged or not? Before we answer that, let’s go over the differences between turbocharged and non-turbocharged systems. 

Turbocharged

The engine is equipped with a turbocharger and an intercooler system to cool the boosted air temperatures before entering the engine. The intercooler system is required to negate the by-product of turbocharging an engine (and thus boost), which is heat. The airflow path is intake -> turbo -> intercooler -> engine.

In a turbocharged engine, the need for and use of a Cold Air Intake System is typically not deemed necessary or very useful. The turbocharger superheats the cooler air it receives from the intake before passing it to the intercooler. The boosted air exiting the turbo is substantially hotter than the ambient air temperatures in your engine bay before it enters the intake – especially true while the vehicle is moving.    

More focus is placed on performance improvements of the intercooler system because that is the primary method to cool the incoming boosted (read “hot”) airflow before it enters the engine. The use of a cold air intake system has little effect on the resulting boost air temps, so the cost-effectiveness is not great. This is precisely why the Mazdaspeed platform focuses on increasing the intake size (ingesting more air = more power), adding a larger turbo (more boost), and increasing the size of the intercooler (additional surface area for cooling) coupled with a professional tune to maximize power.

Non-Turbocharged

The engine is not equipped with a turbocharger and, therefore, does not require an intercooler system. The airflow path is more direct and does not have a cooling system built-in; intake -> engine.  

Since there is no intercooler to cool the incoming air (it’s not needed), the best way to improve air density and performance is with cooler air entering the engine directly. So, a cold air intake on a non-turbo engine can be helpful – especially in warmer climates. 

2019-Mazda-3-air-intake

Let’s Recap: 

In either turbo or non-turbo applications, a heat shield or CAI system will provide varying degrees of benefit in some driving situations. For a turbo application specifically, the usefulness of the CAI system is marginal due to the turbo heating the air it receives from the intake. Instead, investing in an SRI and performance intercooler system is a much better plan.   

For the non-turbo applications, a CAI system is a worthwhile investment because the airflow path is so much more direct, and it’s the only way to help reduce intake air temps and thus increase air density which equals power.  

We hope this has been a helpful and educational blog and lends support as you decide the right path for you and your Mazda! Thanks for tuning in!

-Barett @ CS

Mazda 3 Rear Wiper Delete

Sometimes Form is more important than Function…and sometimes we find features in a vehicle that are not that useful to us.  One of those features happens to be the rear wiper assembly.  We felt this way and many in the community have informed us of this as well.  

With that, we now have Rear Wiper Delete Kits for the 2nd, 3rd, & 4th Generation Mazda 3 hatchbacks.  

Mazdaspeed 3/Mazda 3 Wiper Delete for 2010-2013

If you happen to live in one of the fortunate states that don’t get a lot of rain or find yourself not using your rear wiper very often, this is the kit for you.  The CorkSport Rear Wiper Delete Kit completely removes the wiper arm and the motor assembly.  This shaves weight (about 2 pounds) from your car and gets rid of the unsightly rear wiper arm.  

Mazda Hatchback wiper delete

The delete “plug” in the kit is manufactured from 6061-T6 aluminum and finished with a black anodized coating then laser engraved with a sleek CS logo.  While this is a subtle mod for your Mazda, we are always shocked at how much better the rear end looks afterwards.  

2014-2018 Mazda 3 Rear Wiper Delete

2nd Gen 2010-2013 Mazdaspeed 3/Mazda 3 check out your kit here: Click me!

3rd Gen 2014-2018 Mazda 3 Hatchback check out your kit here: Click me!

4th Gen 2019+ Mazda 3 Hatchback check out your kit here: Click me!

2019+ Mazda 3 Rear Wiper Delete

Thanks for checking out the CorkSport Rear Wiper Deletes!  For all the Gen1 Guys and Gals, we are working on a kit currently, we will have a kit ready mid summer!

-Barett @ CS

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