Honda CM 450

Make Model	Honda CM 450
Year	1982
Engine	Four stroke, parallel twin, OHC,3 valve per cylinder
Capacity	447 cc / 27.2 cu-in
Bore x Stroke	75 x 50.6 mm
Cooling System	Air cooled
Compression Ratio	9.3:1
Induction	2x 30mm Keihin CV
Ignition	CDI
Starting	Electric
Max Power	37 hp / 27.5 kW @ 9000 rpm
Max Torque
Transmission	6 Speed
Final Drive	Chain
Front Suspension	Telehydraulic forks
Rear Suspension	Swingarm fork with adjustable telehydraulic shocks.
Front Brakes	Single disc
Rear Brakes	Drum
Front Tyre	3.50-18
Rear Tyre	4.00-16
Dry Weight	181 kg / 399 lbs
Fuel Capacity	13 Litres / 3.4 US gal
Consumption Average	64 mp/g
Standing ¼ Mile	13.7 sec

The Honda CM series was a street bike precursor to the Honda Rebel series of motorcycles produced from 1979-1981. These bikes had a 395cc parallel twin engine that was air-cooled. Features included electric start and electronic ignition.

The Honda CM series all generally resembled the older-style flat-seat bikes from the 60s and 70s, with the exception of a slightly raised passenger area seat and small plastic fairings for the battery and electrical. These are "standard" style motorcycles but do have some elements of the cruiser (stepped seat, increased fork angle, extra chrome).

The CM400 series includes only a speedometer and three indicator lights (neutral, oil pressure, high beam) with a tachometer for the C and T models. The E (economy) model had wire wheels and drum brakes, while the others had "Comstar" alloy wheels and a front disk/rear drum braking setup. While not particularly powerful, the CM400's handling makes it one of the great starter bikes.

Many engine components are common with the Honda CB400T models from the same year. The parallel twin engine has three valves per cylinder (two intake, one exhaust) and a five-speed manual or two-speed automatic transmission. In 1982, the CM engine was bored out to a 447 cc engine with six gears, and the series was renamed CM450.