Sway bar replacements are relatively cheap as far as automotive repairs go. Usually, replacing a sway bar would cost you between $120 to $160, including both parts and labor. At the very most, some cars may cost you around $200, although heavy-duty or high-performance vehicles like sports cars and trucks will require special sway bars. Therefore, it's not unusual to find performance-oriented sway bars like these cost you upwards of $300 or even closer to $1,000 in extreme cases. While you're replacing the sway bars, you might also have to consider replacing the sway bar links and bushings, which should cost you $320 if you need to replace both the links and bushings.