David Phillips created a poll in Yamaha YZF R125 Official Page 2016.

If i put a k&n filter in do i need to change anything else?

4 comments
  • no a k&n makes about 0.03 bhp on a yzf lol i just put an iridium spark plug in when i did mine with the airbox mod

  • No I got one

  • Nerp, just sounds nicer really

  • I brought one... hopefully its here tomoro :)