I am looking at getting some fox 2.0 coilovers for the front end of my fx4. I know they hold less oil than the 2.5s but I do not do any extreme off roading so I think they will be fine for my needs. What are the major benefits of the 2.5s over the 2.0s and could I just get some resi's for these 2.0s to allow them to access more oil if it was an issue?
You should be fine with a 2.0. The fox 2.0 is an aluminum bodied shock which discipates heat a lot faster than the other steel bodied 2.0's on the market. The 2.5 with resi is for more aggressive/faster off-roading.