Looking to shave some weight. For my first race season I ran a crossmax enduro in front and XM819/XT hub rear wheels. Would a change to crossmax SL (rim brake) in front and back be a good upgrade? Also, I would probably switch to lighter tires - I'm thinking Specialized Captain Control. I was running a IRCMibro UST in front and Mythos UST rear.

Any guess how much weight savings I could expect? May 1 pound or so?