Honda CG 125




Make Model

Honda CG 125




Four stroke, single cylinder, OHV


124 cc / 7.6 cu-in
Bore x Stroke 56.5 x 49.5mm
Cooling System Air-cooled
Compression Ratio 9.5:1


22mm Mikuni carburetor



Max Power

8.1kW / 10.8 hp @ 9000 rpm

Max Torque

9.8 Nm / 7.2 lb-ft @ 7000 rpm


5 Speed 
Final Drive Chain

Front Suspension

27mm telescopic fork, 115mm wheel travel

Rear Suspension

Dual dampers with 5-step adjustable spring preload, 80mm wheel travel

Front Brakes

110mm drum

Rear Brakes

110mm drum

Front Tyre


Rear Tyre


Dry Weight

114 kg / 251 lbs

Fuel Capacity

13.5 Liters / 3.5 US gal 

Ideally restricted to A to B commuting, with perhaps a very occasional foray as far as C, this 125 is one of the least expensive motor cycles on offer from Honda, and one of the few to have pushrod valve operation. Until 1981 a poor seller, despite its low price and economical (100mpg) ways, the CG was confidently expected to climb the sales charts as the October 1982 deadline for reduced capacity learner machines became more pressing.

The overhead-valve CG125 produced 12bhp, compared with the ohc model's 14bhp. In some versions it had a casing for the rear chain

At first glance, the CG seems to be one of the more popular ohc 125s; the different arrangement of cylinder head and valve gear is not obvious and there is little else to give the game away (which perhaps suggests that Honda intended some blurring of the differences between the two).

Price cutting is evident in the 41/2in-diameter drum brakes, which are not up to the job of dealing with the 60mph, sometimes 70mph, of which the CG is capable — especially when a pillion passenger is carried; that, and the use of direct lighting with attendant dimming of the headlight at low engine revs.

CG125: Single-cylinder, ohv, 124cc (56.5 x 49.5mm). 11.6bhp/9,000rpm. Five-speed gearbox. Flywheel magneto/ direct lighting. 2.2g petrol, 1.8ptoil. Telescopic/pf. Tyres, 2.50 x 18in (fr), 3.00x 18in (r). 2101b. 65mph.