unit b series identification

B25	249cc OHV 67mm x 70mm

January 1968	B25B.101 Engine and Frame C25 Barracuda now called B25 Starfire, full width 7" front brake, upswept handlebars.

October 1968	B25C.6001 Engine and Frame B25 Starfire, 31/4 gallon steel tank, improved front forks, twin leading shoe 7" front brake, stop light activated by either front or rear brake, rev counter option.

November 1969	B25 Starfire, improved engine breather, improved carb, new oil pump, oil pressure switch with warning light, front fork legs hard chromed, smaller ignition coil.
	B25 Fleetstar introduced as B25 Starfire with lower compression motor and simpler finish for fleet market

October 1970	B25 Starfire discontinued.

November 1970	B25SS Gold Star Street Scrambler 250 introduced, 4 speed, telescopic front and swinging arm rear suspension, oil carried in large diameter top tube of frame, brakes 8" twin leading shoes front and 7" single leading shoe rear, 2 gallon tank, 12 volt rectified lighting, upswept exhaust, dual seat.
	B25T Victor Trail 250 introduced, Similar to B25SS Gold Star but with different gears, trial tyres, front brake 6" single leading shoe.

August 1971	B25 Gold Star Street Scrambler 250 discontinued.
	B25 Victor Trail 250 discontinued.
	B25 Fleetstar discontinued

B40	343cc OHV 79mm x 70mm

September 1960	B40.101 Engine B40.101 Frame B40 Star introduced. Similar to C15 Star but with bigger engine with push rod tunnel integral with cylinder barrel, 4 speed, 3 gallon tank, brakes front 7" rear 6".

September 1961	B40.3601 Engine B40.3511 Frame B40 Star, roller bearing bigend, Lucas RM19 alternator, detachable ignition key, front brake floating shoes, new dual seat.

May 1962	B40B.336 to B40B.393 Engine B40.4303 Frame B40 Sports Star 90 introduced. Sports version of B40 Star with higher compression engine.
	BSS.101 Engine B40 Sports Star 90, engine numbering system altered.

September 1963	B40.5275 Engine B40.6668 Frame B40 Star, magnetic Speedo fitted.
	BSS.426 Engine B40 Sports Star 90, modifications as for B40 Star and chrome plated sports mudguards.

September 1964	B40F.101 Engine B40.7775 Frame B40 Star, modified gearbox, timing case mounted contact breaker.
	B40FSS.101 Engine B40 Sports Star 90, modifications as for B40 Star.

August 1965	B40F.1148 Engine B40.9973 Frame B40 Star discontinued
	B40FSS.295 Engine B40 Sports Star 90 discontinued.

B44	441cc OHV 79mm x 90mm

November 1964	B44 Victor Scrambler introduced, high compression engine with alloy cylinder barrel and head, 4 speed, telescopic front forks and swinging arm rear suspension, 531 Reynolds frame, 11/2 gallon alloy tank, 7" brakes, no lights.

September 1965	B44.131 Engine B44.267 Frame B44 Victor Scrambler now known as B44 Victor Grand Prix.
	B44 Victor Enduro introduced, trail model similar to the C15 Trail but with larger motor, small headlamp.

August 1966	B44 Victor Roadster introduced, similar to Barracuda but with larger motor and roller bigend.

July 1967	B44.2775 Engine and Frame B44 Victor Grand Prix discontinued.

October 1967	B44 Victor Roadster now known as B44 Shooting Star, full width 8" front brake.

October 1968	B44 Shooting Star modifications as for B25 Starfire.

November 1969	B44 Shooting Star modifications as for B25 Starfire.
	B44 Victor Special introduced, similar to B44 Shooting Star but with different gears, larger rear tyre, 8" front brake, smaller headlight, 13/4 gallon tank.

October 1970	B44 Shooting Star discontinued.
	B44 Victor Special discontinued.

B50	499cc OHV. 84mm x 90mm

November 1970	B50 Gold Star Street Scrambler 500 introduced, similar to B25 Gold Star Street Scrambler 250 but with bigger engine and different gears.
	B50 Victor Trail 500 introduced, similar to B25 Victor Trail 250 but with bigger engine and different gears.
	B50 Victor MX introduced, motor cross version of B50 Gold Star Street Scrambler 500 stripped of non-essentials to reduce weight, front brake 6" single leading shoe, 1 gallon tank.

August 1971	B50 Victor Trail 500 discontinued except for export.

December 1972	B50 Gold Star Street Scrambler 500 discontinued.

August 1973	B50 Victor MX discontinued.