Yeah because the drive train of the 2.5 is way smaller then the revo or maxx3.3
The RPM arms don't mean anything on the 2.5. They don't add width just strength...Here is the Tmaxx 3.3
View attachment 134613View attachment 134617 and now here is the conversion
View attachment 134618View attachment 134619
And now the tmaxx 2.5
View attachment 134621View attachment 134620
Now the 2.5 chassis and the 3.3 chassis see what I'm saying??.here's the 2.5 chassis brace up against the 3.3 chassis brace. Now due you get what I'm saying the 2.5 won't work for the correct way to do the conversion
View attachment 134622View attachment 134623