Despite the fact that the new model looked much the same as its predecessor - Metralla 62 - it got a lot of changes that made it the most desired motorcycle at the time. Metralla Mk2 was very powerful, stable, and the world fastest in its cubing class. Total about 5,200 units were produced to 1971. With this model, Bultaco became one of the most prestigious brands in the world. Metralla Mk2 was equipped with a 244 cc two-stroke engine.

Type of engine: two-stroke
Number of cylinders: 1
Capacity: 244 cc
Cooling: air
Compression ratio: 8,5: 1
Bore x stroke: 72 x 60 mm
Peak output: 21.2 kW / 29 hp at 7,500 rpm
Top speed: 164 km / h
Air intake: 1 carburetor Amal
Electrical equipment 6 volts
Ignition: Magnet / fly wheel
Clutch: wet multi-disc clutch
Speeds: 5
Primary transmission: chain
Secondary transmission: chain
Front suspension: hydraulic telescopic fork
Rear suspension: two shock absorbers
Brakes: duplex drums 160 mm
Rear brakes: Simplex drums 140 mm
Wheels: spoke wheels
Front tires: 2.75 x 18
Rear tires: 2.75 x 18
Length: 2,050 mm
Width: 660 mm
Height: 1,013 mm
Dry weight: 102 kg
Fuel: super
Tank capacity: 14 l
Manufacturing years: 1966-1972