1985 se 1999 tak ka sound hi sabse best tha kyunki ye model euro 1 emission norms mein aata tha lekin jo original CD 100 hai wo 1985 se 1990 tak available tha jisa sound bhi bahut achha firing karta tha iske baad cd100 ss model ka sound CD 100 model jaisa kadak nahi tha lekin 2000 se jo cd100 manufacturing hui wo euro 2 emission norms mein tha jo bilkul bakwas tha sound bilkul dabi hui aati thi euro 1 wala maze khatam kar diya tha aur aaj jitni gaadi fi euro 6 mein aa rahi hai unme sound ka bilkul pata hi nahi chalta isse pata chalta hai ki kaun sa model mein kitna dum hai always old is gold ❤❤❤❤❤ I❤ CD 100 1985 - 1990 model this model engine direct come from japan after 1990 cd100 ss launched which was manufactured in gurgaon, haryana so CD 100 is original from honda and cd 100 ss is from collaboration from hero