FYI after doing a few of the bigger Ti bolts on the front end of my Cat, I can tell you it's going to take a lot to loose 3lb with them. Fourwerx Carbon has some a-arm and ski bolt kits for these that seem pretty reasonable for Ti.
I'm not a Doo expert but after getting down to the nitty gritty with my Cat I can suggest to make yourself a spreadsheet that lists the part, the weight savings, the cost, and the cost/lb. Start with the lowest cost/lb parts and work your way down until you run out of money. Really helps focus on maximizing your dollars. Changing 5 small parts that all cost $250 and only save 1lb each doesn't seem worth it, but you think a $1500 set of rails that saves 5lb is...until you see the math. That extra $250 you saved lets you buy one more of the $250/lb parts. The further the part is away from the roll axis of the sled, the more you should notice it when throwing the sled around. For example saving 5lb in the skid might not be as noticeable as cutting 2.5lb off close to each ski. Also, a part that makes the sled better for what you're trying to do might not reduce weight. Case in point my stock skid with BDX lightweight arms was 36lb. My Kmod with Ti arms and Raptor shocks is 41lb. 5lb gain but the arms and rails don't bend, and puts the power to the ground better. Did have to convert it from Gen II to Gen III to make it handle like I was expecting though.
Ok now for part suggestions I haven't seen:
-Polaris skis with Ti runners and mounting bolts
-ditch the mountain strap if you don't use it
-Conquer 280 track
-ditch the clamshell on the pipe and have it coated
-aftermarket running boards add weight but also add rigidity
-remove any mounting clips/bolts that are no longer being used (if the stock can used 3 spring tabs to the chassis and the aftermarket uses only 1)
