Dont get me wrong, I think that the bigger carbs etc... have their place, but my 34mm PJs seem a little big for the tight stuff. Its gonna depend on the types of trails that youre on, but I run a stock stroke triple MX ported cylinder , VF 3s, Pro circuits, 20cc domes on 94 with the 34mm PJs and its pretty insane on the trails, almost too much. JMO. Oh and a boost bottle...........