The document lists various American bicycle frame builders organized by state, including the materials they use to build frames, such as steel, titanium, aluminum, and carbon fiber. Materials vary between builders, with most specializing in one or two materials like steel or titanium. The builders span many US states and produce road, mountain, and custom bikes.
4. Igleheart Custom Frames and Forks – Massachusetts – Steel Independent Fabrication – New Hampshire – Steel, Titanium
Inglis Cycles – California – Steel Intense Cycles – California – Aluminum
5. Ira Ryan Cycles – Oregon – Steel Justice Madison Cycles – Tennessee – Steel
K.Bedford Customs – New York – Steel, Titanium Kent Eriksen Cycles – Colorado – Titanium