Numbered 46501 to 49700 (approx). Bolt on seat stays with drawback type chainstays for rear wheel adjustment.
WM1x19 (f), WM1x19 (r). with identical hubs and chrome plated rims. WM1 x 20 (f & r) for export models. Black spokes with NPB nipples. Bolt on rear sprocket.
Plain inverted U section 5.5” wide, unvalanced front and rear. Rear, two piece with detachable tail section. Tail section supported by wire stays.
Petrol/oil tank Chromium plated with lined black panels. Twin Westwood type fillers (oil & petrol) with REAR fitted petrol balance pipe. Single bolt damper arm fixing but no damper fitted. Brass lever petrol tap. Oval 'Rudge-Whitworth' rubber gnee grips.
Numbered 601 to 1300 (approx) - 4 valve 249cc with cast iron open valve radial cylinder head, bolted to the barrel from below. 18mm central plug. Oil feed to rear of cylinder. Miller coil, Lucas Maglita or magneto ignition.
Both 6 3/4", coupled with steel shoes.
Miller 7” headlamp with No 832 8-0-8 'Lighthouse' ammeter and 29E rear lamp. (where fitted). Round ML magneto without lights.
4 speed gearbox with hand change on RHS of tank. Pressed steel primary cover with single inspection hole.
Horizontal Amal type 5/151 with Amal straight pull control.
Twin 1 3/8” low level pipes into Rudge ‘can’ type silencers and 5” fishtails.
1” non adjustable handlebars with folded type inverted levers. Single toolbox mounted opposite battery carrier. No steering damper or fork shock absorber fitted. Pressed steel central stand. Open ended ‘D’ section forks.
Black & gold finish, chrome plated petrol tank with maroon panels with black guards. Black with maroon guards & tank panels. Smith’s trip/non trip speedometer, Bonniksen speedometer, legshields, pillion footrests, electric horn, Lucas No 63 bulb horn, competition exhaust pipes. WM2 x 19 or 21 wheels for export models.