I bought carb parts from Honda about 2 years ago, they were in "new style" packaging and looked newly manufactured, you have to check for availability now. They don't have what you may call "carb kits". There's a gasket set that has all gaskets and o-rings for one carb and its fuel tee. There are jets available - limited size availability the last time I checked. I bought needles about 6 years ago and they were apparently very new as well. The float valve is available.
Buying all these OEM parts will cost quite a bit more than a Keyster carb kit, available through
www.siriusconinc.com and other dealers. This kit usually has the stock jets, a needle, some gaskets (no fuel tee o-rings), and maybe a float valve. The jets are NOT Keihin OEM, and I've had tuning problems develop after installing a Keyster kit that were solved by reinstalling the original old jets. Jets wear very slowly: the needle jet and needle get abraded by contact to some extent but other jets should last the life of the bike. The needle in particular is a very high precision bit of metal, aftermarket ones I've looked at are all measurably different from Keihin OEM ones. Using Keihin (Honda) needles seems advisable. The Keihin float valve from Honda costs more than a complete Keyster kit: I have replaced several sets of these valves shortly after the owner installed Keysters because the carbs commenced dripping soon afterwards: in my limited experience Honda/Keihin float valves have not had this failure rate.
