Punching above its weight: 1976 Yamaha RD400
The 1976 Yamaha RD400 came out screaming in 1976, a mag-wheeled exclamation point on Yamaha’s range of popular, fast-paced two strokes. To make sure the message landed, Yamaha re-tooled its factory to build the RD400’s parallel twin, which was more than just a rebored version of the RD350’s mill. A longer stroke necessitated new crankcases,…