For four decades, the BMW R-GS series — 80, 100, 1000, 1100, 1150, 1200, and 1250 — has been the standard bearer in the adventure bike market. The 2021 R 1250 GS 40 Years Edition celebrates this milestone. (Photos by Kevin Wing)

When I first laid eyes on our 2021 BMW R 1250 GS 40 Years of GS Edition test bike, I thought of my Uncle Clive. He had worked for the doomed British Leyland for years before accepting a role with BMW. His garage, once the perpetual home to a gleaming Rover, was now occupied by a stunning 5 Series sedan, but it was the new motorcycle, waiting in the shadows, which drew my attention. It was unlike any I had seen before.

The air-cooled cylinder heads of its opposed Twin jutted out brazenly from the sides of the engine cases, protected by crash bars. Though it wasn’t a dirtbike, it shared some of the same characteristics, like a long, single-piece seat and a high, fixed front mudguard. Most distinguishing of all, the rear wheel seemed to float in space. Uncle Clive, always ready to explain an engineering feature, eagerly directed me to view it from the other side and began a lengthy monologue on the benefits of a combined single-sided swingarm and driveshaft. The details were lost on me. I was only 12 at the time.
1980 BMW R 80 GS

1987 BMW R 100 GS

It was 1984. What I didn’t know back then was how bold the path was that BMW had blazed a few years earlier with the R 80 G/S, the first motorcycle that delivered ...