Quick Stats

1977-81, 398/425cc DOHC twin 36hp 105mph 60mpg 380lb

What to Expect

Classic looking twin with remote ride and engine but flickable, stable chassis. Any engine that vibrates or smokes is on the way out. Camchains snap, valves burn out and pistons seize if servicing neglected. Exhaust and electrics rot. Single gear driven balancer works well and gives little trouble. Anything with more than 40k on the clock’s troublesome. Also nice ’80 GS450; GSX400 weak eight valve head but faster.