The STi rear trailing arm set replaces the factory trailing arms with a Stiffer, more rigid piece. The main appeal if these pieces though is the replacement of the factory bushing. The soft rubber bushing is replaced with a dust sealed pillow ball joint. Removing this excess play from the suspension system gives it a smoother, more predictable feeling. Not only are you getting better handling out the trailing arms, but you also get to add another JDM STi pink part to your car! These rear trailing arms are also a perfect compliment to the STi rear lateral links set!

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