Best bike exhaust sounds in the world

Best bike exhaust sounds in the world

1999 Honda CBR 600 F4 Danmoto exhaust (http://www.youtube.com/watch?v=tpv6ST3ReC8) by http://www.youtube.com/user/kiroc89

Suzuki GSXR 750 VS Honda CBR 600 (http://www.youtube.com/watch?v=irZH1jDDzg8) by http://www.youtube.com/user/djfastx

Suzuki GSX-R 1000 Burnout (http://www.youtube.com/watch?v=jDifcRV5-ak) by http://www.youtube.com/user/NeoTheOne2

Yamaha R6 Superpole MotoGP open exhaust (http://www.youtube.com/watch?v=ym0KpqbgS0k) by http://www.youtube