Matchless G85 CS (1964-69)

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The Matchless G85 CS was a motorcycle produced from 1964 to 1969, equipped with a single-cylinder, four-stroke, pushrod engine with a capacity of 497cc. The bike had a gear-driven oil pump for lubrication, a 1-3/8 inch Amal GP carburetor (later replaced by a 932 Concentric carburetor), and a magneto ignition system. With a compression ratio of 12:1, the G85 CS had a maximum power output of 30.2 kW (41 hp) at 6500 rpm.

The G85 CS had a 4-speed transmission and a duplex frame. It featured an AMC fork for the front suspension and a swingarm, twin shocks and coil springs, and oil dampers for the rear suspension. The bike had drum brakes on both the front and rear wheels, with the rear brake being 8 1/4 inches in diameter. The wheels were made of steel with wire spokes, and the bike had a wheelbase of 1445mm (56.9 inches).

The front tire was 3.00 x 21 inches, while the rear tire was 4.00 x 18 inches. The fuel capacity was 9.1 liters (2.4 US gallons). With its classic design and powerful engine, the Matchless G85 CS was a popular motorcycle among riders in the 1960s.

Technical specifications:

Make Model: Matchless G85 CS

Year: 1964 – 69


Engine: Single cylinder, four stroke, pushrod
Capacity: 497 cc / 30.3 cub in.
Bore x Stroke: 86 x 85.5 mm
Cooling System: Air cooled
Compression Ratio: 12:1
Lubrication: Gear driven oil pump
Exhaust: Single, right side
Fuel System: Amal GP, 1-3/8 in. carburetor From 1967: 932 Concentric carburetor
Ignition: Magneto
Starting: Kick
Maximum Power: 30.2 kW / 41 hp @ 6500 rpm
Transmission: 4-Speed
Final Drive: Chain, 7.46
Frame: Duplex frame
Wheelbase: 1445 mm / 56.9 in.

Front Suspension: AMC fork
Rear Suspension: Swingarm, twin shocks and coil springs, oil dampers
Front Brakes: Drum, 7 in.
Rear Brakes: Drum, 81/4 in.
Wheels: Steel, wire spokes
Front Tyre: 3.00 x 21 in.
Rear Tyre: 4.00 x 18 in.
Fuel Capacity: 9.1 L / 2.4 US gal

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