Quick Stats

1975-79, 498cc DOHC twin, 48hp 110mph 45mpg 400lb

What to Expect

Eight valve twin with troublesome chain driven balancer. Good frame but engine burns out valves, strips plug threads and needs constant fettling. Early B model had two piece cylinder head that leaks oil. C model quickest, E model slowest; D model on had easier to adjust balancer chain. Ferodo pads cure wet weather lag. Avoid 2-1 exhausts. Some ran for 50/60k but the majority expired rapidly.