Fox Suspension Float CTD / DPS Air Spring Volume Tuning Kit

This kit is designed specifically for Fox Float CTD and DPS rear shocks that feature a 9mm shaft. If you are unsure of your shock model, check the air sleeve or the damper body for the model name before purchasing.

Adding volume spacers reduces the internal air volume of your shock, which makes the suspension ramp up faster as it compresses. This prevents harsh bottom-outs on big hits while allowing you to run lower air pressure for a plusher feel in the initial part of the travel.

You will need basic tools to remove the air sleeve from your shock, such as a strap wrench or a shock vice, along with fresh suspension fluid and new air sleeve seals. It is a straightforward process, but you should have the correct seal kit on hand to ensure the shock remains airtight after reassembly.

Suspension tuning is often a process of trial and error. Start by checking your current sag and bottom-out frequency; if you are hitting full travel too easily on moderate trails, add a spacer. If you find you cannot use all your travel even on big hits, you may need to remove a spacer.

Yes, you can stack spacers to achieve the desired level of progressivity, provided you do not exceed the maximum number of spacers recommended by Fox for your specific shock length and volume. Always check the Fox service documentation for your specific shock model to confirm the maximum spacer limit.