The Specifications of a Suzuki RM 80


The RM80 is an off-road motocross-type motorcycle produced by the Japanese Suzuki Corporation from 1977 to 2001. The bikes all have roughly 80 cc of engine displacement and light frames. Each generation has its own designation, for example the 1991 version is technically known as the RM80M, and the last version in 2001 is called the RM80K1, but is more simply known as the RM80.


  • For 2001, this small scrambler motorbike had 82 cc of displacement --- the volume refers to the volume of the cylinders swept by the pistons --- and a single cylinder. The engine is two-stroke, which means it takes the pistons two strokes to complete an engine cycle.

    The bore and stroke of the engine is 1.9 by 1.8 inches (47.5 by 46.8mm) and the compression ratio is 10.8 to one. The bore is the diameter of the engine cylinder opening and the stroke is the total distance the piston travels up and down. Compression ratio is the ratio of the volume between the piston and cylinder head before and after a compression stroke.

    The carburetion uses a Mikuni TM28SS and the ignition uses a capacitor discharge system. The engine is liquid-cooled. The final drive system uses a chain to transfer power from the engine to the rear wheel and the bike has six manual gears.


  • The RM80 has disc brakes front and rear. A disc brake is a metal disc fixed to the wheel. When force is applied through the brake lever, pads push on the disc and cause friction, slowing the wheel.

    The bike's suspension has telescopic forks in the front which use air and oil to dampen impact and which have 10.8 inches of travel. Travel is the term used to describe the free vertical movement of the suspension. The rear suspension is link-type, linked to the rear axle, with 10.9 inches of travel.


  • The RM80 is 71.1 inches in length, 43.3 inches high and 28.9 inches wide. the bike has a wheelbase of 48.8 and a high ground clearance of 12.8 to deal with rugged terrain. The seat is at a height of 33.5 inches and the bike weighs a light 141 lb dry. The fuel tank only holds 1.2 gallons.

    The front tire is 70/100-17 40M size and the rear tire is 90/100-14 49M size. The front wheel itself is 17 inches in diameter and the rear wheel is 14 inches in diameter.

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