RE: "OFFICIAL" Himoto / Redcat Racing 1/10th BUGGY
Oh heck no that won't hurt it...it'll actually keep the engine cooler....however....you run the risk of damaging other things (servos...linkage...etc..) in the event of a roll over on an uneven surface such as rocks and dirt and stuff...but other than that...as long as you didn't roll over on something that the wing wouldn't help keep you clear of you are fine....
For you guys asking about adjusting the trans?...well...experiment with it and let us know how it works.