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here is some help , hope this works , see you next ride . http://www.thumpertalk.com/forum/showthread.php?t=661647&highlight=sm+fork+springs http://www.thumpertalk.com/forum/showthread.php?t=656784&highlight=sm+fork+springs http://www.thumpertalk.com/forum/showthread.php?t=653328&highlight=sm+fork+springsI have an S converted to SM and the front is way too soft, expecially when compared to my buddies factory SM. I have ridden it this way for over a year now, but the harder I push it on the twisties, the more I realize I need to do something about the front end.
I have decided that it is time to break down and order a set of springs so I went to Racetech's website and used their spring calculator, but in their list of riding types in the spring rate calculator, they do not list supermoto. I figured the "Desert/Enduro/Trail" option was probably the closest to SM, but wanted to get some input before I order some springs.
I'm 6'3" and weigh 195 without gear and have an oversized IMS tank. The calculator is telling me to use .50 springs. Does this sound correct to those of you in the know? I have never replaced (with aftermarket) fork springs in my 24 years of riding so this is a new thing to me.