The Matchless G2 motorcycle was manufactured from 1958-62 and came in three versions: G2, G2S, and G2CS. Its engine was a single cylinder, 4 stroke with a capacity of 248.5 cc/15.2 cub in. The G2/G2S had a compression ratio of 7.8:1, while the G2CS had a higher ratio of 10.5:1. The fuel system for the G2/G2S was an Amal monobloc 376/5 carburetor, while the G2CS used an Amal monobloc 376/276 carburetor. The bike used a dry sump with an external tank for lubrication, and the oil capacity was 1.4 L/3 US pints. The transmission was a 4-speed with a chain final drive, and the internal gear ratios were 1st 2.42/2nd 1.85/3rd 1.30/4th 1.0:1. The bike had a tubular steel frame that was closed at the bottom by a pressed-steel channel, with a telescopic fork front suspension and a swinging-arm rear suspension with shocks and coil springs. The front and rear brakes were both drums, with steel wire-spoked wheels and 3.25 x 17-inch tires. The bike had a wheelbase of 1345 mm/53 in, a ground clearance of 140 mm/5.5 in, and a seat height of 760 mm/30 in. The dry weight was 148 kg/325 lbs, and the fuel capacity was 12.5 L/3.3 US gal. The Matchless G2 came in two colors: red and black.
Technical specifications:
Make Model: Matchless G2 / G2S / G2CS
| Year | 1958 – 62 |
|---|---|
| Engine | Single cylinder, 4 stroke |
| Capacity | 248.5 cc / 15.2 cub in. |
| Bore x Stroke | 69.85 x 64.84 mm |
| Cooling System | Air cooled |
| Compression Ratio | G2 / G2S: 7.8:1 G2CS: 10.5:1 |
| Fuel System | G2 / G2S: Amal monobloc 376/5 carburetor G2CS: Amal monobloc 376/276 carburetor |
| Lubrication | Dry sump, external tank |
| Engine Oil | Hot: SAE 50 Cold: SAE 30 Extreme cold: SAE 20 |
| Oil Capacity | 1.4 L / 3 US pints |
| Exhaust | Single |
| Starting | Kick |
| Clutch | Wet, multi-plate |
| Transmission | 4-Speed |
| Final Drive | Chain |
| Chain Links | G2 / G2S: 123 links G2CS: 131 links |
| Internal Gear Ratios | 1st 2.42 / 2nd 1.85 / 3rd 1.30 / 4th 1.0:1 |
| Frame | Open, tubular steel frame, closed at the bottom by a pressed-steel channel |
| Front Suspension | Telescopic fork |
| Rear Suspension | Swinging-arm, with shocks and coil springs |
| Front Brakes | Drum |
| Rear Brakes | Drum |
| Wheels | Steel, wire spokes |
| Front Tyre | 3.25 x 17 in. |
| Rear Tyre | 3.25 x 17 in. |
| Wheelbase | 1345 mm / 53 in. |
| Ground Clearance | 140 mm / 5.5 in. |
| Seat Height | 760 mm / 30 in. |
| Dry Weight | 148 kg / 325 lbs |
| Fuel Capacity | 12.5 L / 3.3 US gal |
| Colours | Red, Black |
