Ride Rite's and lifting by the frame

Installed the ride rites, fantastic improvement. My only question is the box said not to lift by the frame (worth noting I have the stock SR5 suspension on a 4 banger), is that warning worth heeding and should I tell the dealer (I have to get it serviced there to maintain a lifetime powertrain warranty) to not to that/somehow support the axle? Or will they be alright for the occasional lift? Thanks

 

I can't see it being an issue if you have minimal (5 psi) pressure in the bags, as the shocks prevent over-extension. Lifting the frame with 100 psi in the bags would likely rip the shocks apart, or bend the shock mounts. That said, I would notify anyone who services it, and if they damage it, its their bill to repair it.