ISR Performance Rear Lower Control Arms for 2013-2016 Scion FR-S RWD (ZN6) C43 AMG A wider piston shaft than

A wider piston shaft than conventional uprights means more consistent damping on long sessions and more fatigue life before rebuild

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ISR Performance Rear Lower Control Arms for 2013-2016 Scion FR-S RWD (ZN6) C43 AMG A wider piston shaft thanISR Performance Rear Lower Control Arms for the 2013 2016 Scion FR S (ZN6) are built to restore proper suspension geometry, dial in alignment that slammed stock arms can't reach, and add years of service life. If you've lowered the FR S on coilovers or dropped springs, factory hardware in this location can no longer keep the alignment honest these parts solve that problem and sharpen how the chassis feels under load. Every ISR rear lower control arms