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The livery and eye-catching forms of the Aprilia RS4 50 and RS4 125 echo the looks of the Factory version of the Aprilia RSV4 supersports bike. And the RS4 shares more than just a family resemblance with the most hardcore street version the bike dominating the world SBK championship.
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The design of the fairings and tank, the unique looks of the front end, with the headlights suspended over the gaping air intakes, and the spectacular tapered tail fairing are identical to their counterparts on V4 1000 cc supersports model that set new standards in terms of style and technical content for the superbike segment. Extensive aerodynamic studies have minimised surface areas without compromising wind protection, and the fairings showcase the superlative mechanicals of the Aprilia RS4 50 and Aprilia RS4 125 rather than conceal them. As a result, the frame and engine are not hidden away but proudly flaunted as fundamental elements of the design of Aprilia's new small supersports models. With the triple headlight, the Aprilia RS4 bikes have a decidedly aggressive look that lends a unique character to the entire front end. The LED taillight merges stunningly into the ultra-compact tail fairing and offers excellent luminosity. The fairing, product of extensive wind tunnel testing and race experience, offers excellent wind protection together with superb aerodynamic efficiency. And as well as contributing to the extremely aggressive looks of the bike, the top fairing and tail fairing also maximise performance in terms of speed. On Aprilia RS4 125, one additional detail underscores the level of sophistication of the bike: the exhaust, which is unmistakably inspired by competition machines, is completely integrated within the lower part of the fairing. A solution that is not just visually effective, but which also contributes significantly to the dynamics of the bike by helping to centralise masses.
Evotech Performance have taken this race replica and given it the same high quality tail tidy as its big brother. The evolution doesn't stop there, Evotech performance have also designed and manufactured a radiator for added protection.