 | |
| Manufacturer | Triumph Engineering Co Ltd |
|---|---|
| Also called | T21, Twenty One, 'Bathtub' |
| Production | 1957–1966 |
| Class | Standard |
| Engine | 349 cc (21.3 cu in), air-cooled, four-stroke, twin |
| Transmission | Four-speed, chain final drive |
The Triumph Twenty One (also known as the 3TA) is a standard motorcycle made by Triumph Engineering Co Ltd in Coventry. The Model Twenty One was the first of the Triumph unit construction twin cylinder motorcycles. Rebranded as the Triumph 3TA in 1959 it continued in production until 1966 when it was survived by the Triumph T90, its sports version.[1]
- ^ "Triumph 3TA". Retrieved 14 April 2009.