A few questions about modifying sprockets

[nddragon01]

I'm looking to up my final drive ratio and I was wondering what people would recommend to keep the bike streetable.  Should I go with a stock front sprocket and +3 rear, or go -1 front and +2 rear?

Also, if I keep the front sprocket at stock teething, should the front be replaced anyway when the rear and a new chain are put on?


Edit - ok ok ok, Botard me just found this posting https://www.hayabusa.org/cgi-bin/busa/ikonboard.cgi?act=ST;f=11;t=79582 all about gearing with the final drive chart, so I guess I can read through that post to figure out which gearing to go with, so I guess I'm just looking to find out if I stay with the stock front sprocket at 17T, should I go ahead and change it out for a new one with 17T when the rear and chain are replaced?

 

[kd185]

all depends how many miles on the front sprocket
and did you clean lube and adjust your chain during those miles

 

[nddragon01]

11,000 miles on the current sprockets and chain (all OEM stock)...and of course I didn't do all that stuff...I've been lazy

 

[big jim]

Change out both sprockets and the chain. Go 1 down in front and up 2 in rear.