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1977 Yamaha RS 100 DX specifications

Available technical data for this model and year. Specifications can vary by market and version.

Technical specifications

Displacement97.0 ccm (5.92 cubic inches)
Engine typeSingle cylinder, two-stroke
Power10.5 HP (7.7 kW )) @ 7500 RPM
Compression6.8:1
Bore x stroke52.0 x 45.6 mm (2.0 x 1.8 inches)
Fuel controlMembrane
Cooling systemAir
Gearbox5-speed
Transmission typeChain (final drive)
Front brakesExpanding brake
Rear brakesExpanding brake
Front tyre2.50-18
Rear tyre2.75-18
Weight incl. oil, gas, etc93.0 kg (205.0 pounds)
Fuel capacity9.00 litres (2.38 US gallons)
Top speed104.0 km/h (64.6 mph)

Source: Bikez: RS 100 DX, 1977. Retrieved 2026-09-19. Match confidence: exact.

Years listed are the entries held in this archive, rather than a complete production history.

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