Engine:

Air cooles, ohv, vertical twin, alloy head, cast iron barrel, 360 degree one-piece crank shaft, vertically split crankcases, unit construction.


Bore:

Stroke:

Displacement:

Compression ratio:


71 mm

82 mm

649 cc

8.8:1

Lubrication:

Double-plunger pump, dry sump

Ignition:

Twin coils, Lucas battery

Carburettor:

2 Amal Monobloc 1 1/16 inch, chopped off with single rubber-mounted top feed, central float chamber


Primary Drive:

Final drive:

Gearbox:


Duplex chain

Chain

Triumph, four-speed, close ratio

Frame:

Brazed and lugged tubular loop-type with single front down-tube and bolted-up rear subframe, duplex lower rails


Front suspension:

Rear suspension:

Triumph telescopic forks with two-way damping

Tubular swinging arm, Girling shock absorbers


Front brake:

Rear brake:

8 inch full-width drum, SLS

7 inch single-sided drum, SLS


Tyres:

Front 3.00 x 19

Rear 3.50 x 19


Fuel tank:

4 gallons (18 litres)

Maximum power:

52 bhp @ 6,700 rpm

Top speed:

124 mph (200 kph)

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