What are the gains different in these two carbs. Is this the Carb for $310.50 from Knutz? The 42mm flatside will outperform the stocker right? How much more? Will the difference be noticable with stock cams?

 

From what i understand, the 45mm on a stock motor will cost you a little bottom end for a minimal top end gain, and is more worth while on a motor with internal mods.
The 42mm flat slide should outperform the stock BSR in terms of throttle response, but I'm not sure about any power gains.

There are some guys around here that have the 42 flatslides, maybe they'll shed some more light...

 

Anyone with the 42 flatside?

 

Keep posting hurycne, eventually someone with a 42 flatslide will speak up. I know I've been hoping for a response.

 

im having a 46mm lectron w/idle jet installed.should be done by the end of the week,it would have been done this sat. but the guy installing thought that a race was more important than getting his customers bike back to him.its been in the shop for 3 weeks.ill let you know how it runs if i ever get it back.

 

only go with the 45mm if your going to go big bore, its just too big for a stock motor. go with the 42mm

 

I have a 45mm with a stock bore and when i fly by folks it don't seem to be holding me back.stock bore too for right now!!!!

 

I have the 45mm that came with my RWR Stage 1 kit and I have NO problems with it, in fact I love it.