personally, i don't believe in roll cage in RC. roll cage lead to weigh, weigh lead to inertia, inertia lead to impact, impact lead to damage.[8D] so its more protection but more damage. and your truck will be less agile.my point is: if you drive your car a way that you need a roll cage, get yourself some driving lesson or if you plan to jump off a cliff, a parachute will be more usefull

and since i'm pretty sure you don't drive like an *****, i don't think you need this!!!

my humble opinion

no seriously, if you think that it can save you shock tower and engine head, its maybe a good idea.