My first bike was a 71 Yamaha yz 175. Got it when I was 14 traded a boom box, a 12 band eq for a car and 25 dollars. Got it running with a new plug and some pre mix. Bike had no exhaust at all straight open out the jug and when I hit 3 gear wide open I swear to god my ears felt like they were going to bleed from the noise. That's where I was bitten by the bike bug.