Introduction

Aprilia - RS 4 125 SBK Replica (2012, ZD4TW000)

The Aprilia RS 4 125 SBK Replica is a special edition of the popular RS 4 125, released in 2012 as a tribute to motorsport. With racing-inspired graphics and styling reminiscent of World Superbike machines, this model offers a distinctive racing look while maintaining the standard technical specifications. It was particularly popular among young riders seeking a sporty design with everyday usability.

Model history

Introduced in 2011 as the successor to the two-stroke RS 125, the RS 4 125 featured modern four-stroke technology. The SBK Replica edition, launched in 2012, was technically identical to the standard model but featured unique graphics inspired by Aprilia’s Superbike World Championship race bikes. The design paid homage to factory racers such as Max Biaggi and gave the RS 4 125 a bold visual identity.

Technical details

The RS 4 125 SBK Replica is powered by a liquid-cooled single-cylinder four-stroke engine with a displacement of 124.8 cc. The DOHC four-valve engine delivers around 11.7 kW (16 hp) at 10,500 rpm and a maximum torque of approximately 11 Nm at 8,500 rpm. Power is transmitted via a 6-speed gearbox and a multi-plate oil-bath clutch. Electronic fuel injection ensures efficient combustion, and final drive is via chain. The setup is ideal for A1 license holders looking for a sporty ride.

Chassis and brakes

The frame is a rigid aluminum perimeter construction that ensures precise handling. The front features an upside-down fork (41 mm), while the rear uses a progressive mono-shock system. Braking is provided by a 300 mm front disc with a radially mounted four-piston caliper and a 218 mm rear disc with a single-piston caliper. Tire dimensions are 110/70-17 at the front and 150/60-17 at the rear, matching the bike’s racing character.

Dimensions and weight

The RS 4 125 SBK Replica has a seat height of around 820 mm, a wheelbase of approximately 1,350 mm, and a ready-to-ride weight of about 122 kg. The fuel tank holds 14.5 liters, offering good range for everyday and spirited rides. Its compact dimensions and sporty ergonomics make it suitable for agile riding on city streets and twisty roads alike.

Color variant

The SBK Replica edition comes exclusively in the distinctive Biaggi Racing livery. It features a black base color with red, green, and white accents, racing numbers, sponsor logos, and design elements that mimic Aprilia’s factory race bikes. Although visually unique, the SBK Replica is technically identical to the standard RS 4 125.