Produced from December 1946 until April 1949, approximately 2100 manufactured.

Distinctive features:

• Available in black only
• Plunger style front fork suspension
• Stubby 'Lucas MC45' dynamo
• Inverted handlebar control levelers and 'clean' handlebars (no wires)
• Cantilever seat suspension
• Small circular rear light (this changed during production, from a rear light only to a rear light with brake light combined)
• Blue tank badge with 'Sunbeam' in white
• Cigar shaped exhaust
• Fat aluminum carburettor cover or round bell type
• Horn mounted on the front part of the frame above the dynamo
• Fat tyres
• No side stand
• Balloon tyres
• Rippled petrol cap
• Tax disk holder in the front suspension fork shroud