ujoints
You dont. The u-joints that came with the oem driveshaft aren't replacable and you must buy a new driveshaft is the u-joints go bad. Same thing happened to me. I'm in the process of buying a mazdatrix driveshaft with replacable u-joints for about $248. That's if I can't find a decent one on ebay or somewhere else.
i just installed mine yesterday. my u-joints where messed up!!! if i where you i would buy another oem driveshaft for like $50 on ebay or try to find one from the members on here. well if ur on a budget then do wut i say but if u want u can go ahead and take macz advice and buy that 1 instead
This thread should be helpful, if you're interested in replacing just the u-joints, and not the whole shaft...
https://www.rx7club.com/showthread.p...light=rockford
https://www.rx7club.com/showthread.p...light=rockford
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