Still short of development cash, the company was restricted to launching developments of existing products, most notably around the popular Norton Commando. With its classical parallel twin probably by now overdeveloped, from March 1973 the Roadster, Hi Rider, and the Interstate all began to use a new 828 cc engine.
The company was financially constrained, so they were limited to launching updates of existing products, primarily around the well-known Norton Commando motorcycle. With its classic parallel twin engine likely now fully developed, starting in March 1973, the Roadster, Hi Rider, and Interstate models began using a new 828 cc engine.