Soma Fabrications

4one5 Frame

A solid foundation to build up a modern steel single speed. Fast, stiff, but still comfy enough that (many of) you can slap on on rigid fork and not regret it.

• Tange Prestige heat-treated CrMo steel; butted CrMo rear end
• Updated NORBA race geometry
• 5mm thick horizontal dropouts
• International Standard disc brake mounts
• Designed to accommodate an 80mm travel fork