The Matchless Model X was developed for V-twin enthusiasts and had a specially reinforced rear frame for heavy-duty sidecar work. At the end of 1936 the Model X was upgraded and rebranded the Sports Tourist, with a shorter wheelbase frame which improved roadholding and steering. The Motor Cycle road tested the Model X in May 1937 and noted that the steering was light but even when cruising at over 60 mph (97 km/h) it did "not become so light as to necessitate-use of the damper." Performance of the 990 cc (60 cu in) engine was described as "delightful" and although not a sportster it was capable of 80 mph (130 km/h) and could reach 70 mph (110 km/h) from a standing start in a quarter of a mile.1
In the lead up to World War II Brough Superior began using 990 cc Matchless V-twin side valve engines for their SS80 and overhead-valve engines for the SS100.2
Currie, Bob (1988). Classic British Motorcycles of over 500cc. Patrick Stephens Ltd. ISBN 978-1-85260-083-9. 978-1-85260-083-9 ↩
"Matchless Model X". Retrieved 1 January 2009. http://www.manuk.de/_matchx.htm ↩