FAQ

Where are the parts made?

All parts are made in Victoria, Canada. Nothing is outsourced, we do everything in house; fabrication, machining, TIG welding, powdercoating, urethane casting, final assembly, and packaging.

 

What is NVH?

NVH stands for noise, vibration, and harshness. Installing a polyurethane bushing product on your vehicle will likely have an impact on your vehicle's NVH (or not, it is subjective and depends on the person).

Noise: This could be any noise you notice while driving your vehicle (road noise, wind noise, rocks tinging inside your fender wells, differential whine, etc.)

Vibration: This could be be caused by the engine running, to the bumps you feel through your car while driving on a bumpy road. 

Harshness: This is the general feel of the vehicle as determined by the driver - a very low drift car with a welded diff might be described as "very rough and bouncy" to drive, where a stock minivan may be described as "very smooth and comfortable".

Overall, the NVH of a vehicle is really subjective - Only the driver can decide how they feel about a vehicle's NVH. Factors such as: amount of OEM sound deadening still in tact, full interior or stripped, and suspension stiffness are all things that can affect NVH.

 

Which polyurethane hardness should I go with?

70A: Street use - Most customers purchase 70A bushings for their street driven vehicle, or lower powered vehicle that also gets track use. I personally use 70A bushings throughout my car (except for the subframe) and am quite happy with them for drifting and street use. These have been installed in customer cars, and the customer/myself cannot notice any difference in NVH compared to OEM rubber bushings.

80A: Street/track use - Some of our bushing kits come standard in 80A hardness, which is required for significantly loaded up items (FC rear subframe). For other parts where vibrations and shock loading is more of a factor (transmission, engine, differential), you are most likely going to notice some increase in NVH over stock rubber bushings. Some customers claim there is no increase in NVH with our 80A hardness differential bushings- this really is subjective to you the user, and your vehicles setup.

90A: Recommended for track use only. This durometer of polyurethane is very stiff, and significantly restricts the amount of movement of the component it is installed to. These will still have some give over solid aluminum or delrin bushings, so they are a good option VS going with solid mounts!

 

How do your bushings compare to OEM Mazda or Mazda comp bushings?

I will be durometer testing both of these very soon (before the end of 2025), but from some research/experience I suspect:

OEM Mazda bushings are around a 55A hardness

Mazda competition bushings are around 75A hardness

Our bushings are a solid urethane design, unlike factory rubber style bushings. This means the center pin will have less compliance to move, compared to a semi-supported center pin on a rubber bushing. Due to this, a lower durometer solid urethane bushing can flex less than a higher durometer OEM style rubber bushing. I will be making a video about this sometime near the end of 2025 to demonstrate this!

 

Will polyurethane bushings be better than solid bushings?

Yes, absolutely. Unless you are building a strictly track car, it is best to stay away from solid bushings like delrin or aluminum. While they can be attractive because of their low cost, you will pay for it in brutal NVH increases. The big reason for this is that you are transmitting so much more shock load and noise from the drivetrain and suspension DIRECTLY into the chassis when you run solid bushings. This is also very hard on factory components, as it shock loads them - it is not uncommon to see broken axles, blown transmissions/diff's, and quickly worn out clutches from using solid bushings.

Customers who have purchased our polyurethane bushing kits after running solid bushings always remark on how much nicer it is to drive their car. As someone who also experienced this, I can say it makes a huge improvement for street driving. It also makes the vehicle so much nicer to enjoy on a weekend or around town, yet still capable of performing at the track.

 

Are the parts tested?

Yes, all parts are tested before sale. I work with other drivers in the car community to validate the products before sale. Most products get tested both on the track, and street.

 

I am having an issue with my product, what next?

We take cases of product issues very seriously. In the rare case you experience a problem with one of our parts, please get in contact with us ASAP so we can assist you!