| Production Years: | 1928 - 1931 | Maximum Speed: | 90 km/h |
| Engine: | Two-stroke |
| Cylinders: | 1 |
| Capacity: | 300 cc |
| Bore x Stroke | 72 mm x 72 mm |
| Power: | 8 PS |
| Control: | Deflector Piston |
| Gears: | 3-speed |
| Suspension Front | Girder fork |
| Suspension Rear | Rigid |
| Tyres: | 25 x 3 |
| Weight: | 115 kg |
The Triumph model K11 is a sports version of the K10, with adjustable footrests and two exhaust pipes from the cylinder.