I have -1/+2. It's Magic. Unless you are only stunting in a parking lot, it is the most you will need, and yet you will definitely not be dissatisfied. Also, when you change sprockets, your should always replace the chain too, so the whole system doesn't wear out really quickly (unless the bike only has like 300 miles on it!)

 

I know the bike isnt doing literally 170. As before I said the SPEEDO read 173. Not the dyno.

Daniel Thompson

 

With -1/+1 on a Dyno and while laying down 100hp at the rear wheel, my top speed was only 139mph. Stock gearing might be a true 150mph.