The Aprilia RS 125 debuted in 1992 as a GP-derived entry-level motorcycle and was produced until 2010 when it was succeeded by the Aprilia RS4 125. The bike packed a Rotax single-cylinder liquid-cooled engine with a Nikasil-coated aluminum cylinder block.
In 1994, the Italian motorcycle manufacturer launched the Aprilia RS 125 Extrema, a sports motorcycle in its third year of production, packing the same specifications as previous models without any significant modifications.
It was the single model in the 1992–1995-year range, which had RS 125 R written on the fuel tank. In addition, the bike was painted in a red and black color scheme.
The 1994 model had standard features, such as a full fairing with a rectangular headlight upfront, a medium-sized windscreen, a two-piece dual seat, a single exhaust system with a silencer on the left side, and three-spoke aluminum wheels.
As for power, the 1994 Aprilia RS 125 Extrema had its heartbeat set by a 124cc two-stroke single-cylinder liquid-cooled engine, with a Dell'Orto carburetor feeding the piston, delivering 34 hp with maximum force at 11,000 rpm and 24 Nm (18 lb-ft) torque at 9,000 rpm.
The engine's power was transferred to a six-speed manual transmission that mixed up the energy and sent it to the rear wheel through a final chain drive, pushing the motorcycle to 171 kph (106 mph).