[3] Sprite manufactured trials and scrambles frames which were usually available as a kit-form motorcycle to avoid UK Purchase Tax.
[2][4] The first machine was developed as a scrambler with Alpha 246 cc two-stroke engine and a modified Cotton frame, followed by their own Sprite-framed version and a slightly larger frame-only (without engine) option to use a 490 cc Triumph unit construction engine/gearbox for the larger class of scrambling.
The trials machine was developed for production in late 1964 using a Villiers 36A/37A 246 cc engine with iron barrel or at a higher cost, a Greeves light-alloy cylinder, and a Miller magneto.
[5] Under UK Construction and Use Regulations, competition machines intended for road-use were required to comply with statutory basics of sound engineering, a test certificate, mudguards, seat, audible warning device and number plate.
The Sprite marque should not be confused with the older British Spryt, a small-capacity two-stroke engine produced by Excelsior in Coventry and fitted to the historic Corgi minibike.