With its deep and throaty tone, the EVO U series 3-1-2 system for the Yamaha YXZ 1000R / SS surely doesn't disappoint. Designed specifically for utility ATV's, sport utility ATV's and Side x Sides, the EVO U series is not for the faint of heart when it comes to raw power and sound. If you are looking to dump your restrictive, tingy-sounding, stock exhaust for something that sounds nothing short of pure-MACHO, look no further.