A 400 on Steroids: Suzuki GS450

Best bets on tomorrow’s classics: 1980-1983 Suzuki GS450.

At first pass, the Yamaha Seca 400’s spec sheet reads a lot like the GS450: an air-cooled, double overhead cam, 2-valve, 180-degree parallel twin with counterbalance shaft, 34mm Mikuni CV carbs, transistor ignition, gear primary, six speeds, 14.1-second standing quarter at 92mph, braking from 30mph in 32 feet and a 100mph top speed.
Image courtesy Yamaha