The Matchless G12CS was a model aimed squarely at the Western United States, where guys loved to race modified street bikes off road, like this one seen at the Heart of America Motorcycle Enthusiasts (HoAME) Vintage Motorcycle Rally/Show. Badge engineered, and sold as the AJS model 31 as well, the Matchless G12 was an updated model 11 with a longer stroke and new cases for 646cc. The G12CS, or CS X as some call, it had taller suspension travel, a upswept exhaust, and more power thanks to a higher compression ratio, all aimed at the desert racing crowd.
Clymer Girl and the crew didn’t have to go far to attend the HoAME show and rally, as it was just up the road at the Kansas City Airline History Museum in the Downtown Airport. The show was packed with classic vintage and antique motorcycles representing the best of British, German, Japanese, Italian, and American manufacturers. Some of the brands on display were Honda, Yamaha, Suzuki, BMW, Harley-Davidson, Triumph, BSA, Norton, Indian, Cushman, Vespa, Laverda, Lambretta, Ducati, Matchless, Zundapp, Moto Guzzi, and more. There was everything from 100% perfect restorations, to well worn bikes daily riders, to full-on customized cafe racers, choppers, bobbers, dirt bikes, road racers – any type or style of motorcycle you could image. As part of the museum’s permanent exhibits, there were also vintage propeller driven passenger planes, including a Douglas DC-3, a Martin 404, and, the pride of their collection, a 1958 Lockheed Super Constellation.
You can read more about the Matchless G12 and the variations of it on WIKIPEDIA.
Clymer doesn’t have a manual for the Matchless or AJS bikes, but if you own just about any other model from the 1960s until 2017, we can help. We also have manuals for ATVs, boats, outboards, and personal watercraft, farm tractors, lawn and garden equipment, snowmobiles, and more.