Yamaha RS 125 Specs (Top Speed | Horsepower | Weight)

The Yamaha RS 125 motorcycle specifications include a 125 cc (7.63 cu in) engine.

Key specifications

1976, 1980Model years
125 ccDisplacement
Model years covered
19761980
Year-specific specification changes

The 1976 model is treated as the standard specification. Only later model years with a different supplied value are shown below.

Fuel system
1980Carburettor

How the Yamaha RS 125 compares

This compares the motorcycle with all Yamaha models in this specifications database. The blue marker is this model and the grey line is the Yamaha database average.

Displacement125 cc
Low 49 ccAverage 550 ccHigh 1,852 cc

About 77% lower than the Yamaha database average. Around the 25th percentile across Yamaha models.

This model Yamaha database average

Yamaha database percentile rankings

Percentiles show where this motorcycle sits across the Yamaha specifications database. They are descriptive database rankings, not performance ratings.

Displacement25th

125 cc — larger displacement than about 25% of Yamaha models.

Mechanical overview

Engine layout snapshot

Single cylinder, two-stroke • 125 cc • Air cooled
Chassis snapshot

Chain (final drive)

Model information

Category Sport touring

Engine specifications

Engine type Single cylinder, two-stroke
Displacement 125 cc (7.63 cu in)
Valves per cylinder 1
Cooling system Air
Fuel system Injection

Transmission and drivetrain

Final drive Chain (final drive)

Disclaimer: Specifications may vary by market, trim, production date and optional equipment, and scraped or historical data can contain errors. Comparison and percentile values are calculated from Yamaha models in this specifications database. Always double-check important specifications against the motorcycle owner’s/service manual and official Yamaha information before relying on them. Visit the official Yamaha website.