A much stiffer chassis than in the previous WRX pays dividends in sporty handling. The springs, dampers, crossmembers, subframe bushings, and front control-arm bushings and attachments are all stiffer. The front suspension struts feature thicker outer tubes, and the aluminum alloy lower control arms use pillow ball-type joint bushings and pillow ball-type joint mounts. Likewise, the rear suspension lateral links also use this type of bushing. Torsional rigidity is increased 41 percent compared to the previous WRX. The front stabilizer bar thickness is increased by 3 mm. Front spring rates were increased by 39 percent, and rear spring rates increased by 62 percent.
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