Introduction

General Information

The model "Aprilia - SR 50 Street (2011, ZD4TEA)" is a sporty scooter produced by the Italian manufacturer Aprilia in 2011. It belongs to the SR 50 series, known since 1992 for its innovative technology and dynamic design.
The SR 50 Street was developed to offer riders in the 50cc class a powerful and agile option, particularly suitable for urban use.
This model is aimed primarily at riders seeking an agile vehicle with a distinctive appearance that can be ridden in many countries with a moped or AM license.

History of the SR 50 Series

The SR 50 series was first introduced in 1992 and quickly established itself as a pioneer in the scooter segment.
The SR 50 Street (2011, ZD4TEA) is part of the third generation of this model family, introduced in 2004 with a new design and technical improvements.
Compared to earlier models like the SR 50 DiTech (from 1999), which relied on direct injection, the SR 50 Street returned to a classic carburetor system but maintained the sporty orientation of the series.
In 2011, Aprilia positioned itself in competition with brands like Yamaha and Piaggio, aiming to reach the younger rider demographic with a mix of performance and style.
The "Street" as a base version differs from higher-end variants like the SR 50 R or R-Factory through simpler equipment but remains true to the sporty line.

Technical Details

Engine and Performance

Technically, the Aprilia SR 50 Street (2011, ZD4TEA) is powered by a single-cylinder two-stroke engine with a displacement of 49 cc.
The engine is liquid-cooled and equipped with a carburetor, allowing for an output of about 4 kW (5.4 hp) at 7,000 rpm.
The top speed is limited to about 45 km/h, with unrestricted versions capable of reaching higher speeds depending on approval.
The vehicle features a continuously variable CVT transmission, providing simple and direct power transfer.

Chassis and Brakes

The chassis consists of a hydraulic telescopic fork at the front with 90 mm travel and a single shock absorber at the rear, giving the scooter solid road handling.
The braking system includes a 190 mm diameter disc brake at the front and a 110 mm drum brake at the rear, providing reliable braking performance for this class.
With a dry weight of about 102 kg and a wheelbase of 1,290 mm, the SR 50 Street offers high maneuverability.
The tires, sized 130/60-13 front and rear, emphasize the sporty claim and ensure sufficient grip.

Design and Variants

Color Variants and Customizations

The Aprilia SR 50 Street (2011, ZD4TEA) was available in several color variants, which could vary depending on the market.
Common paint finishes include "Nero Aprilia" (Black), "Rosso Ibis" (Red), and "Grigio" (Gray), often combined with contrasting graphics that emphasized the sporty character.
There are no clear indications that official special models were produced for this specific year.
While the SR series in other years produced variants like the "R-Factory" or limited editions with racing references, the focus for the SR 50 Street of 2011 was on standard production with broad market acceptance.
Individual customizations by dealers may have occurred.