Roadstersport competition diff bushings?
 

I will be swapping out my rear diff for 3.6 unit and figured I would swap bushings at the same time. Has anyone used these? I’ve looked around and can’t find any reviews except on Goodwins site. They are less than half the price of the Mazda competition units and figured I could save a couple bucks. Here is the a link to the bushings in question. Thanks everyone.

https://www.good-win-racing.com/Mazda-Performance-Part/61-2150.html

Even the eBay ones are typically fine, anything’s better than stock. Mazdacomp ones are expensive because it’s the only bushing spec Miata’s can upgrade to, so there’s no reason/competitor for them to lower the price.

Oh shit, just looked at the link, those are actually expensive! Just get the prothane ones: https://www.prothanesuspensionparts....IaAsF-EALw_wcB

I recently bought a set. There was no markings anywhere on the part or box. The rubber has split a bit from the unflanged side of the bushing outer sleeve. I haven't installed them yet as the diff I ordered months ago still hasn't arrived, but I'm not very impressed with them based on what I've seen so far. I'm confident they will work fine though.

I couldn't find the IL Motorsports bushings in stock anywhere in the US when I ordered the Roadstersport units.