Ebay item 170267461433 For the uninitiated, this was the last-gasp roadster model that used the old SOHC Honda 125cc lump (trail bikes used the engine for some years after, though). The RS was an absolute corker. It had CDI ignition, air forks, a box-section swinging arm, accelerator pump carb, hydraulic disc brake, and it went like stink: 75mph was about top whack. And it did well over 100mpg. I tested one in 1982, and loved it. Can't believe I got this one as cheaply as I did: I had a snipe set up for £100 more than the eventual selling price.