Whiteline Rear Sway Bar 22mm 3-Point Adjustable WRX | BSR57Z

Whiteline BSR57Z is a 22 mm solid rear sway bar developed for the 2022+ VB WRX. Three end-link mounting positions provide progressively higher roll stiffness; Whiteline describes effective settings near 21, 22, and 23 mm, allowing the owner to tune rear response around tires, alignment, springs, and the front bar. The kit includes replacement chassis-mount bushings. A stiffer rear setting can reduce understeer and make rotation more immediate, but an overly aggressive combination can reduce stability on rough or low-grip roads. Install both end links in matching holes, lubricate the supplied bushings as directed, and check for exhaust, control-arm, and brake-line clearance through suspension travel. Recheck hardware after initial driving, especially if adjustable aftermarket end links are also fitted.