PHBG RACING Carb For GP3

Can dellorto PHBG Racing carb fit on a Gp3 replica? I am looking at a 19 or 21mm Black coloured carburettor racing body. If possible, which of the two would be more advisable to be install on? Talking about original not copy.

Yes, it will fit. I'd go with the 19mm since it's a 40cc.

If I upgrade to a 50cc will 21 work?

i dont understand, what the difference whit phbg 19mm and the GP3 replica sha 19mm carburator? yes it already have a 19mm carb.

A 21mm works great for a 50cc, that's what i'm currently using.

If i'm not mistaken they have a PHBG replica and didn't have a problem with them for awhile then suddenly I had an idle problem, it would idle high then drop way low intermitently. I'd clean it and still the same. I noticed that the idle screw was very loose and it didn't matter if it was screwed in far. I had this same problem on a freinds 19mm rep carb. I went with a genuine Dellorto carb and never had a problem with it. Joshua, a 21mm works great for a 50cc especially if you run a good race exhaust.

If I am going to get 21mm PHBG racing original what is model am I suppose to get? Coz, the dealer in Singapore told me that there are many sub-model for a 21mm PHBG model. For what I remember, they come in 21mm PHBG (some alphabet behind). Still very confuse on the PHBG model. By the way, what would be a good race exhaust to recomend? Did some searching on pipes but no luck. Alot of aftermarket for aircool 40cc not on watercool upgrade parts. Thanks for your advice.

21mm PHBG DS, I'm not sure about what exhaust to use for your GP3 but i'm thinking of an original polini race exhaust for the GP3's. Hope you have some $$$$ though.

Thanks for you help. Will order carb from dealer.

i have a brand new spare 21mm PHGB carb for sale if you are interested,
PM me i'll sell it for a good price if you are interested.