With the acronym CSR (which stood for Competition/Sprung/Roadster), the G12 CSR was a high performance bike thanks to upgraded cams and higher compression. Here’s an example that’s apparently been ‘fully restored to original factory specifications’.
The seller claims this bike has ‘won multiple trophies at British/European bike shows across New England’ and that it’s in perfect running condition, so find it for sale here on Craigslist for $9,500 in Seekonk, Massachusetts.
This bike-uriousity brought to you by Todd B!