Who needs a 24 tooth single speed freewheel? A single speed freak looking to cruise up Baldwin Street in Dunedin, New Zealand? Yeah. An eccentric bike nerd building a retro-direct bike? Definitely. These are stock freewheels that are disassembled and modified. Get it in 24, 26, 28, or 30 tooth configurations.
http://circleacycles.bigcartel.com/product/custom-freewheel
$75