A better-fitting door bush helps your MX5 overcome rattles and become a more structural part of your car!
Our friends at Polybush have taken on-board feedback MX5 owners to develop a door bush that is not only a structural upgrade but also in keeping with OEM looks.
Being a convertible, there is very little structure connecting the front and the back of the car, so during corners and when hitting bumps, the two halves of the vehicle can move relative to each other causing rattles in the door, doorcard, dash & other interior items, by swapping out the original rubber bushing to Polybush’s Door Bush, we can make the doors a more structural part of the vehicle – Increasing torsional rigidity and the cars rigidity overall.
The original rubber part offered by Mazda was a soft rubber that wears away over time, further opening the gap between the two pieces, reducing rigidity and increasing vibration. Though originally a great part to isolate noise, vibration and harshness, it did not offer a lot of structure to the vehicle.
Installing the Polybush Door Bush significantly reduces the long-known flex within the door enclosure, as our bush fits snugly into the door cup it allows a connection between the body and the door – Reducing rattles whilst also increasing audio quality and offering a satisfying and less tinny door closure. Though still designed to work with OEM botls, these bushes do come with replacement bolts so it is very much a “bolt on” upgrade.
Manufacturing the bushes from Polyurethane rather than a material like Delrin allows for easier fitment as there is now no need to cut down or sand the bush to suit, simply unbolt your old bushes, install the Polybush upgrade, shut the door gently to self-align the part, then tighten to spec.
Click here to view the Polybush Door Bush Set suitable for all MX5s
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