[2][4] The T90's engine was a 180° piston ported two stroke twin of unit construction and had alloy head and cast iron barrels with the cylinders sloped forward almost to the horizontal.
Claimed power output was 10.5 bhp (7.8 kW) @ 9,000 rpm, giving the machine a top speed of 68 mph (109 km/h).
[1][2] Primary drive was by helical gears to a multi-plate wet clutch and five speed gearbox.
[5] Rear suspension was by swinging arm with twin shock absorbers.
Spoked wheels were fitted with 250x18 front and 275x18 tyres rear.