Brough Superior SS100

The Brough Superior SS 100 is a motorcycle which was designed and built by George Brough in Nottingham, England in 1924. Although every bike was designed to meet specific customer requirements—even the handlebars were individually shaped—sixty-nine SS100s were produced in 1925 and at £170 (equivalent to £8,900 in 2025) were advertised by Brough as the "Rolls-Royce of Motorcycles". The term was coined by a magazine road tester in his review of the bike, and Brough eventually obtained explicit permission to use it after a Rolls-Royce executive toured the Brough Superior factory. All bikes had a guarantee that they were capable of 100 mph (160 km/h). The SS100 (Super Sports) was the first custom motorcycle with components chosen from many different suppliers. The first engine (from 1924 to 1936) was the twin-cam KTOR JAP (made by J. A. Prestwich) V twin (upgraded to a Matchless engine from 1936). Gearboxes were the 4-stud 3-speed from Sturmey-Archer, with a chain drive. Brough developed the features of the Harley-Davidson forks and produced his own version (made by the Castle Fork and Accessory Company) to combine light weight with strength that was to become a feature of the SS100 handling.

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