<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by s4strati &raquo;</TD></TR><TR><TD CLASS="quote">go up two teeth on the rear sprocket for a 14/39 final drive ratio. very good results here. very short money because you should still be able to run your stock chain. it'll just take adjusting the rear wheel all the way forward in the swingarm adjustment range.</TD></TR></TABLE>

Strati, the S4 has a 15 tooth countersprocket (OEM configuration is 15/37). 15/39 is perfect for me. Stock chain fits, no problem (although I've since changed to a longer chain). 14/39 would be a bit too much imo.