Clutch kit and a floating secondary kit. Improves performance, cuts belt heat, and the belts last way longer.
Also add a skidplate, if it doesn't have one already.
Alot of people don't think A-arm gaurds are helpfull, but they have saved my arms and probably my nun.
Some people take out the extra idler wheels and add scrathers instead, but that depends on the type of riding that you doo.
I have taken the plastic off of the clutch gaurd, but I had make a mesh vent for the hole in the bottom of the side panel to keep the snow out, otherwise it powder got on the belt.
Boyseen makes a "power pack" kit that is supposed to really help the sdi, but I don't know anyone with it and my sled is a carbed sled.
Personaly, I have added a Team secondary with a floating spacer and tinkered with the clutching myself. I have also ceramic coated stock pipe and y-pipe, and added a can.
