Key performance

17 ch
Power
🔧
123 cc
Displacement
⚖️
110 kg
Weight
🏎️
125 km/h
Top speed
11.5 L
Fuel capacity
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Technical specifications

Changements 1987 1989

No spec differences between these two model years.

Engine

Displacement
123 cc
Power
17.0 ch @ 7250 tr/min (12.4 kW)
Engine type
Single cylinder, two-stroke
Cooling
Liquid
Compression ratio
7.2:1
Bore × stroke
56.0 x 50.0 mm (2.2 x 2.0 inches)
Valve timing
Membrane

Chassis

Gearbox
6-speed
Final drive
Chain   (final drive)

Brakes

Front brakes
Single disc
Rear brakes
Expanding brake
Front tyre
3.00-21
Rear tyre
4.60-17

Dimensions

Fuel capacity
11.50 L
Weight
110.00 kg

Overview

In the mid-1980s, when the Japanese were flooding the market with sensible four-stroke 125 trail bikes, Malaguti released a water pistol filled with gasoline and oil. The 125 YLC, with its small 123 cc two-stroke single-cylinder engine, wasn't there to play a cameo role on forest trails. It came to spit out its 17 horsepower at 7250 rpm, a figure that, on a chassis weighing just 110 kg, meant serious business. Liquid cooling and a six-speed gearbox confirmed the intention: it wasn't a toy, but a working tool for the trail.

Malaguti 125 YLC

Take a closer look. The 3.00-21 front and 4.60-17 rear tires, pure enduro dimensions, set the scene. The front disc brake and rear drum brake are there to slow down, not to stop abruptly, because the philosophy lies elsewhere. With an 11.5-liter tank and a two-stroke engine, range is measured in hours of intense riding rather than road kilometers. The maximum speed of 125 km/h is a technical detail; the important thing happens between 30 and 80 km/h, in the ability to leap from one rut to another.

The engine is a lesson in voluntary simplicity. A bore of 56 mm for a stroke of 50 mm, a moderate compression ratio of 7.2:1, everything is calibrated for immediate response and foolproof robustness. The final chain transmission clicks in the silence of the woods. This unit doesn't purr, it explodes with every throttle opening, turning every climb into a personal challenge. You are far from valve engines and complex cylinder heads; here, it's elementary, direct, almost brutal mechanics.

Who was this Malaguti for? Not for the novice rider looking for a first bike to go to school. It was the ideal mount for the young trial or enduro rider, the one who disassembled everything on the weekend in the vineyards or on wasteland, and who needed a light, lively machine, and above all, repairable with three keys and a screwdriver. It taught anticipation, control of wheelspin, the art of playing with the clutch and the six gears to keep the engine in its power band. A riding school on two wheels, much more formative than a large road bike on which you feel nothing.

Today, the 1989 Malaguti 125 YLC makes collectors of understated Italian design smile. It represents an era when a small displacement engine could have character without needing electronic gadgets or an eye-catching design. It was straightforward, efficient, and terribly fun. On the used market, a YLC in good condition is a rolling testament to a disappeared philosophy: that of pure mechanical pleasure, without frills and without excuses.

Indicators & positioning

Weight-to-power ratio
0.15 ch/kg
🔧
Volumetric power
138.2 ch/L
In category Enduro / offroad · 62-246cc displacement (933 motorcycles compared)
Power 17 ch Top 17%
7 ch median 14 ch 27 ch
Weight 110 kg Lighter than 51%
72 kg median 110 kg 136 kg
P/W ratio 0.15 ch/kg Top 20%
0.08 median 0.12 0.23 ch/kg

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