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Yes. Our Owners Raptor has the RPG Upper arms at 3" over stock with the Fox front 3.0's and stock CV axles. He's had to replace one CV axle already, but he beats the shit out of his truck out at the local spot (Plaster City / Ocotillo). His symptom was clicking noises with the wheel turned due to lack of lubrication from the CV boot popping off. He's at about 24k miles. It's the constant driving at the higher angle that will cause them to blow over time. So still would be a concern.
My Raptor doesn't see off road much and if it does its just a dirt road. With that being said would the upper control arms and the cv axles still be an issue?
Your comment here begs that you should first investigate mid-perch or top-perch setting of your stock coilovers. Way cheaper adjustment than the $2,500 price tag on 3" Fox Coilovers.