Empire Industries Full Exhaust System for Polaris RS1. Full tig welded stainless steel exhaust that features a step pipe design to pull the most horsepower out of your motor. The head pipes and mid section are mated together with a stainless steel turbo style v band clamp. The silencers have a 2in straight through core design with internal quiet cores to keep the sound to a tolerable level. Removable billet end caps make for easy repacking. With the optional external quiet cores with turn downs bring the decibel level within 2 decibels of the stock system. Fuel controller is recommended to run this exhaust.