Introduction

Aprilia SR 50 R (2018–2019, ZD4KLA)

The Aprilia SR 50 R (ZD4KLA) is a sporty 50cc scooter produced by the Italian manufacturer Aprilia in 2018 and 2019. It belongs to the SR 50 lineup, which has been known since its introduction in 1992 for its bold styling and technical innovation.
This version of the SR 50 R combines modern technology with race-inspired design, targeting young riders and scooter enthusiasts who operate within the AM license category.

Model History

The SR 50 R series was introduced in 2004 and underwent several technical and visual updates over the years. The ZD4KLA version from 2018–2019 represents one of the last traditional 2-stroke variants in this lineup.
It features aggressive styling with a sharp front fairing, sporty graphics, and a compact chassis. These elements were deliberately derived from the world of motorsports to give the SR 50 R a distinctive identity within the 50cc segment.
The ZD4KLA was mainly distributed across Europe and was designed in response to growing demand for stylish, reliable city scooters with racing DNA.

Technical Details

Engine and Performance

The SR 50 R (ZD4KLA) is powered by an air-cooled single-cylinder two-stroke engine with a displacement of 49 cc. Fuel delivery is via a carburetor, offering easy maintenance and quick throttle response.
It produces approximately 3.0 kW (4.1 hp) at 6,500 rpm, with a top speed limited to 45 km/h due to legal restrictions. Derestricted versions may reach higher speeds depending on national regulations.
A continuously variable transmission (CVT) ensures smooth power delivery without the need for shifting.

Chassis and Brakes

The chassis features a hydraulic telescopic fork with 90 mm of travel at the front and a monoshock at the rear, delivering a balanced mix of stability and comfort.
Braking is handled by a 220 mm front disc brake and a 140 mm rear drum brake, ensuring dependable stopping power.
With a dry weight of approximately 106 kg and a wheelbase of 1,350 mm, the SR 50 R offers nimble handling and stable road behavior—ideal for city riding and short commutes.

Design and Variants

The Aprilia SR 50 R (ZD4KLA) was available in several sporty color options, including "Race Replica", "Nero Opaco" (matte black), and "Bianco Glam" (white), all emphasizing the model’s racing character.
No official limited editions were documented for this model code, though Aprilia regularly refreshed its graphics and paint schemes to reflect current trends and market demands.
Thanks to its blend of style, reliability, and fun, the SR 50 R (ZD4KLA) remains one of the most popular 50cc sport scooters of the late 2010s.