Designed to optimize power and torque from the 660 cc parallel-twin powerplant, this system meets EC/ECE type approval, making it fully Euro 5 compliantWith the catalytic converter located in the front part of the pre-muffler, to ensure the system fully complies with the regulation, the system has a plug-and-play installation with no remapping neededConstructed from high-quality carbon fiber, lightweight titanium, and high-grade stainless steel, the system has been created using race-proven materialsDesigned to emphasize the racing look of the machine, the system is 0.4 kg lighter than standard stockTesting on the Akrapovic in-house dyno, in back-to-back runs of bikes equipped with a Racing Line (Carbon) exhaust and standard stock exhaust system, recorded an increase of 2.4 hp at 11,200 rpm and a gain of 3.6 Nm of torque at 4,550 rpm, which gives the rider a pronounced throttle responseIts deep, full, and sporty sound, with its throbbing parallel-twin pulsations, offers the feeling of riding a bigger capacity bike, making the Akrapovic Racing Line (Carbon) for the Aprilia RS 660 the ideal exhaust for this middleweight sports bike Design/Configuration2-Into-1 SystemEnd Cap MaterialCarbon FiberModelRacing LineMuffler MaterialCarbon FiberPipe MaterialStainless SteelProduct NameExhaust SystemTypeFull SystemUnitsEachVendor part numberS-A6R4-HAPC MakeModelDisplacementYearCountryEngineAPRILIARS 660 ABS 6592020ALL74 KW(100 PS) 70 KW(95 PS) 35 KW(48 PS)APRILIARS 660 ABS 6592021ALL74 KW(100 PS) 70 KW(95 PS) 35 KW(48 PS)APRILIATUONO 660 ABS 6592021ALL70 KW(95 PS) 35 KW(48 PS)APRILIAAPRILIAAPRILIARS 660 ABS RS 660 ABS TUONO 660 ABS 659659659202020212021ALLALLALL74 KW(100 PS) 70 KW(95 PS) 35 KW(48 PS)74 KW(100 PS) 70 KW(95 PS) 35 KW(48 PS)70 KW(95 PS) 35 KW(48 PS)