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hey i had a stock exhaust but then accidentally snapped it while working on bike, so being stupid and inexperience bad then bought a sano exhaust to go along with my 49cc's. wut exhaust should i get for my bike, i race stock engine and im not planning on eve getting a big bore, which pipe will give me the best power output. i know everyone has opinions, but i only want responses from people with experience who have actuallly ridden and compared exhausts