I changed to the Avons AM41 and AM42 as well as an 18T sprocket from newspeedmaster.com.
My impressions is that the Avon tyres make a big difference in handling although I didnt press them since I've only put on 50 miles.
The sprocket is nice at highway speeds but in city driving downshifting is more frequent.
Also the stock sprocket had a rubber ring attachement on both sides. The replacement I bought from newspeedmaster doesnt. I dont know if it matters. Maybe someone can comment on this.
