Shogun serial numbers are a challenge to decipher. Most of the Shogun bicycles were manufactured in the late seventies up to early nineties. At one point manufacturing shifted from Japan to Taiwan. There have been bikes seen that appear to have been built in the sixties but that has not been verified. This makes decoding the Shogun serial number quite the challenge.
Here is what we have been able to assemble through owners of Shogun bicycles and various information on the internet.
As you can see some of the numbers begin with a M and some with a S. We believe that this indicates the manufacturer. Hopefully what we have here will help you in decoding the Shogun serial numbers on your bike.
M9J20794 = 1979
M2E17125 = 1982
M3L93259 = 1983
N6B03345 = 1986
S985008 = 1989
S015083 = 1990
S005014 = 1990
S075128 = 1990
S145019 = 1991