BEFORE YOU ORDER — MEASURE YOUR JET FIRST
Remove the jet from your carb and physically measure it. If it does not dimensionally match this listing, this is not the correct jet — do not buy it.
Buyer is solely responsible for confirming the correct jet size before purchasing. Do not rely on year/make/model fitment guides — they cannot be guaranteed 100% accurate.
All jet sales are final. No returns or exchanges — no exceptions.
Genuine Keihin 99101-393 small round main jet for Keihin CV, CVK, VB, VD, VE and some PD/PE carburetors. This small round jet measures 8mm overall with a 6mm head and M5 x 0.8 thread, available in a wide range of sizes for precise fueling changes, rejetting, and OEM-style carburetor service.
Also used as a starter jet or main-air jet in Keihin FCR/FCR-MX carburetors.