Yesterday, had my nephew out at a track for some afternoon fun on his '05 KX125. He ended up seizing the engine up solid at the end of the day so I gave him my YZ250 to use this week at MX camp and brought the bike home. Got the cases split today.....and it was the flywheel side bearing that gave out. At least 3-4 of the bearings have vanished....the retaining band was mangled with little bits all over. Fortunately, the bearing race in the case is still smooth, with only some cosmetic scoring on the inner face of the case, so that should be OK. Problem is that when I pulled the crank, the blown bearing came out on the crank. Got the outer bearing ring off (and the bits of metal and remaining bearings), but the inner bearing ring is firmly on the crank. The crank looks in decent shape, barring a bit of minor scuffing. Rod seems fine...no vertical play. But I'm worried that the metal fragments may have gotten into the rod bearings and such. Plus getting the inner bearing ring off is proving problematic (haven't tried heat yet). So I figured I would poll the collective wisdom....is it worth trying to remove the inner bearing ring off the crank and try to rescue the crank...or is it just not worth the bother and potential other issues, and just spring for a new crank assembly? Recommendations on that score? I'm thinking that since it's split....probably better to spring for a new crank assembly...that way the bottom end is pristine and should give him a few years of good use. Not worth saving the couple of hundred bucks, IMO...but I'm curious what the experts think? Thanks! BTW...first time I've split a set of cases....wasn't that bad actually, though I do have the Tusk tools to pull the flywheel, hold the clutch, split the cases/pull crank, and reinstall a crank, without which it would have been basically impossible. Bought all the tools when my bottom end went on my YZ250, since I figured it would be faster and cheaper to DIY the next time. Seems the next time has arrived with my nephew's KX125!