On the FC3S RX-7's Mazda used a system that they called the Dynamic Tuned Suspension System (DTSS). DTSS allows the rear wheels to steer based on how much G force is being generated while cornering. When working correctly this helps improve maximum cornering abilities.
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Over time the DTSS bushings can wear out leading to a sloppy feeling in the rear end of the car. The only way to replace the bushings in to replace the entire hub, which is why we offer a cost effective solution for replacing the upper bushings allowing you to eliminate the DTSS completely and regain a tight controlled feel while cornering.
The kit consists of two (2) Delrin bushings and two (2) aluminum inner bushings.
1986-1991 Mazda RX-7 NA
1986-1991 Mazda RX-7 Turbo