A BFG foi uma empresa francesa que se dedicou à construção de motos utilizando motores de automóvel. Pensa-se que foram construídas aproximadamente 450 unidades no início dos anos 80.
O modelo BFG era equipado com o motor de 4 cilindros opostos do Citroen GSA, com 1299cc.
BFG
Engine
Type: Citroën GSA type, 1 299cm3 capacity, 4 horizontally opposed air cooled cylinders
Power output: 70 bhp (51 kW) at 5 500 rpm
Maximum torque: 100 Nm (75 lbs.ft) at 3 250 rpm
Ignition: Electronic
Alternator: 480 W
Battery: 18 Ah, 12 V
Weight
Dry weight: 290 kg
Max weight: 490 kg
Capacities
Fuel tank capacity: 22 litres
Engine oil capacity: 4 litres
Gearbox oil capacity: 4 litres
Technical specification
Frame
Frame type: Tube, engine is part of frame
Front suspension: Telescopic fork
Rear suspension: Swing arm, 2 shock absorbers
Wheelbase: 1 610 mm
Seat height: 785 mm
Brakes front: 2 x 300 mm discs
Brakes rear: 1 x 260 mm disc
Performance
Max speed: 197 km/h
Acceleration: 0 - 1000 m : 25 sec
Fuel consumption: 5 litres/100 km
http://www.bfg.asso.fr/?page_id=57 MF

Bore and stroke:
77 x 70 mm
Cubic capacity:
652 cm3
Compression ratio:
9,2 : 1
Carburettor:
1 x Solex 26/38 CSI
Ignition:
Electronic A.E.I. Thomson
Gearbox:
5 speed
Wheelbase:
1 425 mm
Height:
740 mm
Weight:
190 kg.
Max. power:
36 bhp @5 500 rpm
Max. torque:
5,3 kgm. at 3 500 rpm
Velocidade Máx: 150Km/h
Fuel consumption:
5 litres/100 km
http://www.bfg.asso.fr/?page_id=13