Sway Bar affects the handling and the car’s over steer and under steer. It ties the lower suspension links together across the front or back, will keep your car flat in turns instead of leaning over to one side. Hardrace sway bars provide better control especially at high speeds cornering . Designed for OE direct replacement . Hollow internal structure . Heat treated . Correction of under or oversteer . Improve more grip and better handling . Increased stability while during high speed cornering  Note: 22 mm 5 PCS/SET  Fits: Toyota Supra 5th J29/A90 2019-present BMW Z4 G29 2019-present BMW 3 Series G20/G21 2019-present BMW 4 Series G22/G23/G26 2020-Present BMW 2 Series G42 2021-Present