Compression Arms, also known as Banana Arms on 350Z's, are a common source of wear and tear. When they start to fail you normally get a 'knocking' noise on the front end, especially when changing road surface or going over bumps.
The failure is due to the bushes wearing out and the arm moving and knocking when driving, to stop this and improve the durability of the arms we have coupled our OE Spec arms with Whiteline Polyurethane uprated bushes. This will allow them to not only last longer but give you a better feel in the car.
Fitment - Nissan 350Z - 03-09 - Coupe & Convertible.