The 0.94lb Fox DHX4 Air is valved for this bike. Not the Moto1, not the Moto3, but the Moto2. Cannondale’s ability to ask Fox to tune shocks specifically to each of their models creates the best pairing when you first buy this bike. This would make switching out shocks an issue since it will not feel the same as the shock tuned to this suspension. The boost valve pressure is recommended to be between 125 – 200 psi, the boost valve pressure was set to 125psi for a plush ride for this review. The shock pressure was set to 140psi. The 2008 Fox shocks have a nifty blue lever on the boost valve to adjust the pro-pedal between ‘min’ and ‘max’. While I did find the suspension less active with the pro-pedal on ‘max’ the bike climbed well in both settings. The air valve on the boost valve was tough to access with this shock placement, as well the air shock valve was slightly hindered by the upper linkage plate overtop of the valve.
Low shock placement aids in stability. Shock valves are a bit cumbersome to access.