Got 3 builds going,in the anything goes build off. I'll put this one here. Going to rebuild this wih my daughter, 6 years old. She didn't want a "boy" bike. 2003 Diamondback RM Jr. Aluminum frame, Euro square bottom bracket, sealed flip flop hubs. Mini rims aren't iso 406 like BMX, they're iso 451 if you guys aren't familiar. As found, complete and rideable but pretty worn. Talked with the seller, his kid raced it, bought it from another racer, never been a street bike.