For your consideration is this Winning Performance Header, new in box, New Old Stock. Here in the Midwest, if you wanted a Functional Pipe that also looked good, this was one of your three best choices. In the NOV 1974 issue of Bob Bravermans' Cycle Rider checked out the Winning Performance on the CB750. Stock ETS ran 13.70 to 13.8 with 97.25 to 98.5 mph.
For the carb adjustment on the headers they went with one main jet bigger and lifted the needle one notch. Ets fell to an average of 13.08 to 13.2 with trap speed of 101 to 103mph.
The pipes also netted a few extra mpgs.
They tested pipes made for the CB550 and Kaw 900 with similiar results
Price is $425 plus shipping
Period photo
For the carb adjustment on the headers they went with one main jet bigger and lifted the needle one notch. Ets fell to an average of 13.08 to 13.2 with trap speed of 101 to 103mph.
The pipes also netted a few extra mpgs.
They tested pipes made for the CB550 and Kaw 900 with similiar results
Price is $425 plus shipping
Period photo