The G8 delivers with oil and air basic dampers from Monroe Australia set low on the critical damping scale. Why, probably to hit a price point in the market. They are acceptable units on most cars, but not on your G8. Pedders Gas Sports Ryder (GSR) G8 struts are nitrogen charged twin tube dampers tuned for greater control higher on the critical damping scale. Since the G8 arrives sitting rather tall, we conservatively drop the ride height with slightly higher coils rates. You bought the G8 as a performance sedan and not to be a rock hard suitable only for the track toy. Everything we make for the G8 keeps that in mind. It should drive like a European sedan that cost three times as much -- but keep the passenger compartment comfortable for the longest trip. You'll find your GSR damped, SportsRyder sprung and bushed G8 will do that and more. Ride quality is more composed than OE and the handling is excellent. The Street II includes all the bits in the Street I and adds Pedders Gas SportsRyder dampers at all four wheels.
Why wait for a GXP when you can have superior handling now?