Introduction

The model "Aprilia - SR 50 (2000–2003, ZD4RLA-RLC)" is a sporty scooter produced by the Italian manufacturer Aprilia between 2000 and 2003. It belongs to the SR 50 range, which has been known for its innovative technology and dynamic design since its introduction in 1992.
The SR 50 is aimed at riders looking for a powerful and agile scooter for urban use, particularly those riding a 50 cc vehicle within the AM driving license category or comparable classes. This model represents a further development of the early SR 50 variants and combines sporty looks with everyday practicality.

History of the SR 50 Series

The SR 50 range was first introduced in 1992 and marked a turning point in the 50 cc scooter segment by introducing advanced technologies such as liquid cooling and, later, direct injection (DiTech).
The ZD4RLA-RLC model from 2000 to 2003 belongs to the first generation of the SR 50, which was produced until 2004 before being replaced by a revised series. During this phase, Aprilia focused on further developing proven technology and adapting to new market standards.
The 2000–2003 period also falls into an era when Aprilia faced financial difficulties, leading to its acquisition by the Piaggio Group in 2004. The SR 50 (ZD4RLA-RLC) thus reflects Aprilia’s spirit of innovation while the company was striving to maintain its position in the scooter market.

Technical Details

Technically, the Aprilia SR 50 (ZD4RLA-RLC) is powered by a single-cylinder two-stroke engine with a displacement of 49 cc. This engine is liquid-cooled and fueled by a carburetor, enabling direct and responsive power delivery.
The output is approximately 3.5 kW (4.8 hp) at 6,500 rpm, with the top speed limited to around 45 km/h depending on legal restrictions; derestricted versions could reach higher speeds. The vehicle features a continuously variable CVT transmission, offering easy handling and smooth power delivery.

Chassis and Brakes

The chassis features a hydraulic telescopic fork at the front and a single shock absorber at the rear, giving the scooter a stable ride and sporty handling.
The braking system includes a 190 mm disc brake at the front and a 110 mm drum brake at the rear, which was an advanced combination for its time.
With a dry weight of around 90 kg and a wheelbase of 1,290 mm, the SR 50 offers excellent agility, making it ideal for city riding. The 130/60-13 tires at the front and rear emphasize its sporty character and ensure good grip.

Color Variants and Special Editions

The Aprilia SR 50 (2000–2003, ZD4RLA-RLC) was available in various color options, which could vary by market and production year. Common paint finishes included "Rosso" (Red), "Nero" (Black), and "Argento" (Silver), emphasizing the sporty look of the scooter.
Additionally, other colors such as blue or yellow were available depending on the region, though they were less common. There is no clear evidence that Aprilia offered official limited editions or special equipment variants for the ZD4RLA-RLC.
Production focused on a standardized series configuration, with individual customizations possibly offered by dealers or in the aftermarket, but not classified as official special models.