My 800 is set up for aspahlt. A 1.50 gear ratio is about right,it's only shifting in to 1:1 on the clutching. It has heelclickers with 7.8grms in tip 12.1grms in middle 5.3grms in shoulder and 3800 engagment. Gona try a 50 straight helix with a 26-40 *gear. Seen a ZR 800 going 11.15's. Mine has only went a 11.63 at 109mph. Any one have any thoughts? * * http://www.snowmobileworld-s2.com/forums/iB_html/non-cgi/emoticons/devil.gif

I would think that you would run 6.9`s through the 8 th and 11. o`s through the 1/4 at about 120 mph.

Put the 43 tooth bottom gear in it for the quarter mile, I would raise engagement quite a bit if your not slipping track. Believe me you will want your clutch to be more into overdrive for top end.