Set of 4 rubber intake insulators, manifolds or carburetor holders, call em what you like. For use with the stock carburetors on Honda CB750 SOHC models from 1969 - 1970. There are 2 different insulators, insulator A and B. (you get 2 of each). They are clearly labeled.
Inner diameter where they meet the carbs: 35.5mm
Inner diameter where they meet the intake manifold: 33mm
Outer diameter: 47mm
Overall Length: 65mm
Honda Part Number: 16211-300-305 (Insulator A), 16212-300-305 (Insulator B)
Fits Honda:
CB750K - 1969 -1970