TuningForks
New Member
I just did the 16 tooth mod today. Feels much better. I didn't use a Yamaha sprocket though. It's a JT brand from the local bike shop for $19. I still have the stock exhaust and I was expecting to hear more chain noise by not using a Yamaha coated sprocket. No extra noise at all. My '07 only has 680 miles so maybe the stock chain hasn't worn a certain way yet??:confused0024: No complaints...this is how the bike should have been geared from the stables.