Model Identification:

January 1980 MB50SA Introduced

September 1982 MB50SA Discontinued

In the UK the MB5 was available in three colours. Black was the most popular chioce, followed by red. White was a poor selling colour and as a result it is now a rare bike.

In mainland Europe blue was also offered.

Engine Data: (Restricted UK Specification)

Type: Air Cooled, Single Cylinder, 2 Stroke

Bore & Stoke: 39mm x 41.4mm

Displacement: 49cc

Compression Ratio: 6.4:1

Lubrication System: Honda 2 stroke oil injection system

Oil capacity:

Transmission 1.76 pints

Engine 1.94 pints

Starting System: Primary Kick

Maximum horsepower: 2.55 PS / 6000 rpm (DIN)

Maximum Torque: 0.41 kg-m / 4500


Type: Cross Line Backbone Design

Front Suspension: Telescopic (travel 4.9inch)

Rear Suspension: Swing Arm 3.5 inch

Front Tyre: 2.50 x 18 - 4PR

Rear Tyre 2.50 x 18 - 6PR

Front Brake: Disc

Rear Brake: Internal Expanding Shoe

Trail Lengh: 2.8 inch

Caster Angle: 65 Degrees


Type: 5-speed Constant mesh

Clutch: Wet multi-plate

Primary reduction: 4.117

Gear Ratios 1st: 3.083

2nd: 1.882

3rd: 1.400

4th: 1.130

5th: 0.960

Final reduction: 3.750

Drive Sprocket: 12T

Driven Sprocket 45T

Electrical System:

Ignition: Fully Transistorised

Alternator: 0.049kw/5000rpm

Battery Capacity: 6V-4AH

Headlight low/high: 25/25 watt

Tail/Stoplight: 5/21 watt

Indicator Light: 18watt


Overall length: 74.0in

Overall Width: 25.8in

Overall Height: 45.7in

Wheelbase: 48.2in

Seat Height: 29.5in

Ground clearance: 6.3in

Fuel capacity inc. reserve: 2.42 imp gals

Dry Weight: 179lb

Curb Weight: 198lb

Colours Available:

Red, White or Black