HI guys . Was wondering if anyone has tryed the blue *D & D primary clutch spring in there 800 yet. was not sure of the engagement RPM of that spring in 800 application with stock weights. Hope someone has. http://www.snowmobileworld.com/forums/iB_html/non-cgi/emoticons/smile.gif *http://www.snowmobileworld.com/forums/iB_html/non-cgi/emoticons/smile.gif *http://www.snowmobileworld.com/forums/iB_html/non-cgi/emoticons/smile.gif
*Thanks Taz800

I had a D&D blue spring with 70gram weights in my 800 last year and it engaged at 4200rpm.