i have been lane splitting in CA for 10 years now, it is almost the reason i have a motorcycle, i commute everyday to work. if I drive it takes me 1hr to get to work, if i split lane in the motorcycle i get there is 20-25 min.
it would really help traffic if more people were to ride.
if you read the owners manual it said to replace the sprocket when it looks a certain way- ( there is some pictures on that page)
it said to replace the chain when certain criteria has been meet.
i think the "replace together" method was marketed by the sprocket and chain manufacturer...
I have solved the issues with buffeting noise. i still love my NC and commute 40 miles per day
i did replace my mirror with mirror i got on ebay, lower and rounder in the back profile.
but the biggest change i did was the madstad screen, i got a 22 inch screen, drilled few inches...