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.
When it comes to the Matchless brand, the CSR acronym is typically associated with the G12. But the seller of this G80 claims to have 1 of 20 G80 GSRs built as a special order for the Rhodesian High Commission for their police force. I can't find any independent verification…
Introduced in 1958, the AJS Model 31 (and its Matchless twin, the G12) was developed specifically for the US. This is the CSR variant, which stood for Competition Sport Road. Apparently competitors and critics called it the "Coffee Shop Racer". The 646cc air cooled twin was good for 35 horsepower,…
This Matchless G12 has just 159 miles after a beautiful restoration, however it has "developed an engine noise". So for someone who's comfortable working on these engines, you may get yourself an excellent deal on a beautiful classic British bike. And once you fix it, you'll get yourself 35 horsepower…
