Genuine Keihin jets provide the best replacement or calibration solution for your Keihin carburetors.  Do not use an imitation, nothing substitutes for OEM quality and Keihin jetting is guaranteed to be the exact size indicated because of high manufacturing tolerances.  The 99101-ZF5 (old 99101-124-XXX) slow air jets fit all Keihin OEM style CVK, FCR, and FCR-MX carburetors.  They adjust the amount of air entering the pilot  circuit from the carburetor intake bell.  Some applications include, but are not limited to:

• Keihin FCR horizontal draft carburetors
• Keihin FCR down draft carburetors
• Keihin FCR-MX carburetors
• Early model Honda Keihin carburetors (CT, CL trail)
  
• Kawasaki OEM style CVK carburetors
• Kawasaki KZ250LTD (80-83)
• Kawasaki KZ250CSR (80-83)
• Kawasaki KZ305CSR (81-82)
• Kawasaki KZ305CSR (87-88)
• Kawasaki KZ440 (80-83)
• Kawasaki KZ750E (80-82)
• Kawasaki KZ750H LTD (80-83)
• Kawasaki KZ750N Spectre (82-83)