Maybe I got a lemon, but the 16t sprocket created an unacceptable amount of vibration at highway speeds. Maybe I'm getting old. I just took a brief ride (it is 33º and the roads are icy in spots) and I pulled the front end up NO PROBLEM in first @ around 4500 RPM. I'm only 195#. Blas32, send me a check for $15. and I will mail you my 16t sprocket. Or just buy a new one, there cheap enough. What do you think, will I get better times in the 1/4 with lower gearing? If your going to leave the line spinning I don't see it helping, perhaps it would hurt. I'll be racing this spring.