Here’s a lovely example of BSA’s venerable M-21. It’s a military version that still has the sidecar fittings, but the 600cc single engine and gearbox were rebuilt 20 years ago. It has just 11 miles since the work. There’s very little left before this bike is completely finished: you’ll need to add the left side knee pad and replace the carburetor intake venturi.
Find this BSA M-21 for sale in Hayden, Wisconsin here on Craigslist for $7,000.
This bike-uriousity brought to you by Jim R!