Reviewed by Jared S (Beaverton, OR) Reviewed for a 1993 Mazda RX-7 — 2008-08-13 12:51:52
After installing 285/30/18 Kumho V710 tires and lowering the ride height significantly, one final step was to quicken transition times by installing stiffer than stock sway bars.
The ST bars are quite stiff, and significantly reduced transition time and body roll. I've only raced the car once since this (Autocross) and the quicker weight transfer caused me to spin on the first run. It was fine after that, just took a little getting used to.
Installation wasn't too difficult. The front bar does not use the same method to mount the end links as the stock bar - you will need to remove the end links and swap the left for right and right for left. It would have been nice if the end links had mounted the same way as the stock bar.
The rear bar require some cutting on the frame. It's a minor modification. If you take a look at the stock bar, you will see there is a notch in the frame at each end of the bar for clearance. The modification is simply to make this notch larger for the larger diameter ST bar. It would be a good idea to paint the area that has been cut.
The install wasn't too difficult, and start to finish was about a 3 hour job. It would likely take less time on a completely stock car, but mine has a custom Power Steering cooler mount that attaches to the sway bar mounts, and that required some modification as well.