Improve Your MX5 with Delrin Door Bushings

[@6ixthstage845]

crazy how much of a difference such a simple mod makes

[@rtheorymotorsports]

Every Miata MX-5 should have them!

[@Trigger-xw9gq]

Erm, I don't get it; if the door was moving anything more than 1/16" during turns, we'd have contact marks all around the door perimeter where it would be rubbing against the body. We don't see this, so exactly how is it that these are "stiffening up handling"?

[@rtheorymotorsports]

The soft OEM bushings do allow for some flex, you can look up reviews from other people lf if you don't believe us! Seeing is believing, you will absolutely love these door bushings in your Miata. Just look up other reviews from other people on how door bushings stiffened up their chassis! :) The door doesn't move around to the point where it rubs on the chassis, but it does move enough to let the chassis flex a little more! Do you have any other chassis stiffeners on your Miata yet?

[@Moriggia]

In the upper and lower sides also the OEM bushings are rigid (there is metal inside), so I don't see how It would change the chassis rigidity...

[@rtheorymotorsports]

Thanks for sharing your thoughts. The OEM bushings have a small metal backing plate inside, but they are still mostly rubber! At 0:38 in the video you can see how flexible the OEM bushings are. That's why such a simple modification results in an instantly noticeable difference in rigidity. You will love the bushings, they're one of the lowest dollar per smile mods out there!

[@Moriggia]

@@rtheorymotorsports I've had them, I touched them and the stock, the lower and upper part (where they have to be hard for the chassis stiffness they are the same), but the stock have the rubber in the outer part to soften the door when you close it. If you want chassis rigidity you have to put under braces.

[@haveeffortgaming]

@@Moriggiastrange, I noticed a huge difference going over bumps/potholes/railroad tracks. car just feels more solid. these are worth doing IMO.

[@Moriggia]

@@haveeffortgaming maybe the stock ones had wear?

[@haveeffortgaming]

@@Moriggia not at all, low mileage car too! but night and day difference felt for sure.

[@danbee6407]

Great idea, I appreciate the inkling. I do agree that this can further improve the body roll issue with this car; Though 'massive gains on body roll in the front end' just from a tighter door bushing.... Pretty far fetched, brothers. This, combined with after market strut tower braces (front & rear) as well as the under carriage brace... But your mod would be less than 2-3% of the total rigidity gained compared to the mods listed. Again though, I'm not underselling your entrepreneurship. Well played.

[@rtheorymotorsports]

Thank you for sharing your thoughts Dan!! The stiffer door bushings won't make as much of a difference as new sway bars or coilovers, but the increase in stiffness is very noticeable right away on the first drive! For that reason we think it's a no brainer mod, especially given how simple and affordable they are. Have you tried putting door bushings on your Miata yet?

[@ghostes]

Oh my God, do not fucking do this to your car. Don’t do anything to it, it was assembled in Japan and is already perfect!

[@rtheorymotorsports]

We respectively disagree! Everyone has different goals with their car and their build! Agreed that miatas are darn good from the factory, but there is still room for improvement :)