Definitely a difference Traxxion makes with their suspension upgrades. I did my front end with them (Axxion cartridges/fork rebuild/head bearings/triple tree) right before one of our F6B rally's down there. It's worth the money. I didn't do the rear shock at that time though because of low miles, but when I go back to them to have my front fork oil refreshed, I'll also have them do the rear shock.