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Riley 15/6 MPH. (1935)

The MPH model was eventually available with all three versions of the six-cylinder engine, the 15/6 being the last and apparently the shortest-run production model. In all there were probably less than half a dozen 15/6 MPHs (although there are several replicas now boosting that figure), and as some of these are thought to be re-engined 14/6 or re-bodied TT Sprites, converted by Riley, the true figure could be very small indeed.
The 15/6 engine used in the MPH was not the definitive unit used through until 1938, but in fact a rebored 14/6 unit, which therefore shared the bore and stroke of the new engine, whilst retaining the layout of the older engine. This hybrid unit was also fitted to the Stelvio and perhaps a handful of Winchesters.
The 15/6 MPH was only briefly available, before the Sprite 12/4 was launched the following year, itself a re-worked MPH with the smaller engine and a lower price.

Chassis Type: 44T