If you're asking me, they are OK, but I know a lot more abpout mountain bike suspension than trucks, I'm afraid. It feels a bit 'stiff' for lack of better term. I will eventually be adding a plate bumper, so I think it will easily support that. I don't know what shocks you are running, but that will have a lot to do with your outcome. I'm on the standard 5100s on the bottom perch (about 2" lift). My whole rig sounds like a "skeleton in a filing cabinet" (stolen from another poster here) going down the trail, so I'm usually not paying attention to the nuances of front spring travel.......LOL. It handles what I need it to in terms of obstacles just fine.....