I would have them sent off and rebuilt, that way you know they are done right. If the sled is gonna be ridden hard jumps ect. or the rider is over 200lbs. then i would have then re-valved stiffer as well.
A forum community dedicated to snowmobile owners and enthusiasts. Come join the discussion about performance, racing, troubleshooting, trails, maintenance, riding tips, modifications, classifieds, gear, and more!