carb recommendations

[oldyeller]

I am adding a stock Apex pipe to our viper 90 and was curious what would be a good carb upgrade over the stock 16mm mikuni?..It has boyeseen reeds and a uni filter as well..Will probably be adding a ported cylinder with a little bigger bore later on..

[marsrace2]

with all that a 24mm should work great. I would get a Kehin.

[oldyeller]

I already have a 28mm koso and intake that I bought a while ago..Will this work or is it too big?..Is the koso a decent carb?

[marsrace2]

that should be fine, I do not have any experience with the koso carb.

[JAG Motosports]

We have a 30mil Koso, which is a Sunworld, on a 90. It has been a very good carb :)

[nordic quad]

The dellorto DS 21 will fit your stock inntake boot,we used this carb on my sons Predator 90 with mods.