The H&R front and rear sway bar kit for 2009–2014 Audi A4 Avant Quattro (B8) installs a 30mm front bar and 24mm rear bar to reduce body roll and boost cornering stability while preserving ride quality. H&R Sport bars increase roll stiffness for improved lateral grip and more precise handling transitions; many installations include H&R’s Poly/Teflon bushings that eliminate squeaks and routine lubrication.
H&R 09-14 Audi A4 Avant Quattro (AWD) B8 Sway Bar Kit - 30mm Front/24mm Rear