I'm posting this in here because XC guys know the ins and outs of weight savings. My little boys bike weighs more than half his body weight. So I need to lighten the load. He's running a Specialized Big Hit Grom. I believe more XC weight parts would be a great match for a tiny guy riding DH. Except for maybe needing a wider rim. Any thoughts or suggestions? Here's a lil clip of him riding last weekend. You can see how small he is. Under 10, and under 60 lbs.