Had a run out on the new gearing and although I had already put a 16tooth front sprocket on earlier in the year I could notice a difference with the 44 rear. It's made me think that it could go a bit further. I have heard on here that a 15 front on a gen 1 makes the chain rub on the swingarm but with a couple more links in the chain you could get a bigger back sprocket. I don't ride the thing anywhere it's performance but they are well over geared as standard as you would be doing well to hang on anywhere near its top end.