# solid aluminum subframe bushings vs polyurethane?

**URL:** <https://forums.speedlife.net/t/solid-aluminum-subframe-bushings-vs-polyurethane/109504>\
**Category:** SON240sx Automotive\
**Created:** [September 16, 2007, 9:48pm UTC](https://forums.speedlife.net/t/solid-aluminum-subframe-bushings-vs-polyurethane/109504 "2007-09-16T21:48:31Z")\
**Posts on this page:** 1\
**Showing post:** 11

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**Author:** ![Lith](https://avatars.discourse-cdn.com/v4/letter/l/fbc32d/32.png) [@Lith](https://forums.speedlife.net/u/Lith)\
**Post date:** [September 17, 2007, 3:49pm UTC](https://forums.speedlife.net/t/solid-aluminum-subframe-bushings-vs-polyurethane/109504/11 "2007-09-17T15:49:32Z")

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> [@some people just have to make a big deal....](https://forums.speedlife.net/t/some-people-just-have-to-make-a-big-deal/14083/50):
>
> [http://www.superpro.com.au/](http://www.superpro.com.au/) ???

All I could find is this:  
SPF2687K Rear Cross-member Insert Enhancement Mounts  
SPF1800K Rear Cross-member Supplement Washers  
SPF1799K Rear Cross-member Supplement Washers

And they are all subframe insert kits… not replacement bushings.

Only thing I could find (on google) were the MMR Direct polyethelyne (not polyurethane) bushings for the S13/S14’s. It’s basically a hard plastic that won’t break, so you get stiffness of aluminum bushings but won’t get the squeaks/creaks that you normally would with the aluminum ones. However, they are just as hard and the ride will be just as harsh.

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