CTS Turbo Rear Subframe Insert Set B8 Audi S4/S5/Q5/SQ5

The CTS Turbo Rear Subframe Insert Set addresses the inherent flex in B8 platform Audi S4, S5, Q5 and SQ5 rear subframes. Factory rubber mounts allow unwanted movement under spirited driving, compromising suspension geometry and power delivery. These precision-machined inserts fill subframe voids to drastically reduce deflection, delivering immediate improvements in chassis response, turn-in precision and traction off the line. Installation enhances feedback through the steering wheel while maintaining acceptable noise levels for street use. Essential for track-focused builds or vehicles running increased power outputs where rear grip matters most.