I'm curious to hear what Blaine says here, because even the steel insert is still going into aluminum. Seems like the sleeve would spin if over torqued, so maybe it's the "trail fix" part that is important.Raceline discusses the typical tapped aluminum bolt holes that could be stripped or a bolt broken off. Raceline avoided this and went with a hardened steel insert that can be trail fixed. I don’t know if that’s really better or not, but they made it sound better.