View Full Version : 1975 H1 Vs older ones

07-25-2011, 08:15 AM
I just bought a 1975 H1 500 and was told they are not as fast as the earlier ones (1970-1972) Is this true? If so, what was changed, and what can I do to my 75 to put it back to the faster models specs, if in fact its true. thanks for any help!!!