what s up 350 p/v 39 pwk or 40.5 carb

[redrooster310r]

whats the deal with boring the 39 pwk out to 40.5 mm . is it worth it? i ride dunes in winter and mx ...in summer ....too much for the trails.?... i throw my 310 around like its no prob ...just got 350 p/v... should i upgrade?

[GOTFEAR]

Your motor will love a biger carb on a 350 i have ran carbs from 36mm to 44mm on my 350 and the 40 is best never use the clutch off the corners.