So, I’ve done a lot to my 2014 Xp4 900, shocks re-valved, engine stage 2 kit, clutch kit, tires, wheels and accessories. Does great in most situations, but I’m wondering if I could gain a little more with springs – just got back from the dunes and in some cases I had a hard time keeping up with the XP 4 1000 that were in the group. I understand there is a big difference between the two machines, but there must be something i can do. The shock re-valve was huge. I’ve looked at Zbroz springs, but I thought I’d ask to see what others have done.