Introduction

Aprilia - Rally 50 LC (1998, ZD4MDB)

The Aprilia Rally 50 LC from 1998 (type ZD4MDB) was the liquid-cooled version of Aprilia's sporty 50 cc scooter series, offering a more powerful option with significantly improved thermal efficiency.
With its aggressive design, high-quality technology, and above-average equipment for its class, it was aimed at young riders with a taste for performance.

Model history

Shortly after the introduction of the air-cooled Rally version, Aprilia launched the Rally 50 LC (Liquid Cooled). The 1998 model was one of the first in Aprilia's lineup to feature factory-equipped liquid cooling, disc brakes, and larger wheels – features typically found on more powerful motorcycles.
This model represented Aprilia’s effort to establish itself in the high-performance 50 cc segment alongside competitors like Gilera and MBK.

Technical details

The Rally 50 LC is powered by a liquid-cooled single-cylinder two-stroke engine with a displacement of 49.3 cc.
It delivers around 4.4 kW (6.0 hp) at approximately 7,000 rpm, making it one of the more powerful 50 cc scooters of its time, depending on local restrictions.
Power is transmitted through a continuously variable automatic CVT gearbox.
Both electric and kick starters are available, offering flexibility in everyday use.

Chassis and equipment

The chassis is based on a reinforced steel tube frame with a sporty setup.
A telescopic fork handles front suspension duties, while the rear features a hydraulically damped mono shock absorber.
Braking is provided by a large 190 mm front disc brake and a rear drum brake.
Tyre sizes are 120/90-10 at the front and 130/90-10 at the rear, ensuring high stability and a dynamic ride feel.

Design and special features

Visually, the Rally LC stands out from the AC version through sportier graphics, additional air intakes, and a more aggressive front fairing.
Colour options included classic Aprilia schemes such as black, red, silver, and bold racing designs.
Some variants came with sporty stickers, white rims, or tinted indicators, enhancing their distinctive look.

Conclusion

The Aprilia Rally 50 LC (ZD4MDB) was a performance-oriented 50 cc scooter featuring liquid cooling, strong riding dynamics, and robust technology. It offered ambitious riders a true high-spec small-capacity machine and remains sought-after among tuners and collectors today.