mattbrown Retrobike Rider Kona Fan GT Fan Feedback View Jul 16, 2025 #1 Does anyone know what diameter the Seatpost is? It's a chromo frame, and 27.2mm is too small, amd 30.0mm is too big. I suspect 29.?. Last edited: Jul 16, 2025
Does anyone know what diameter the Seatpost is? It's a chromo frame, and 27.2mm is too small, amd 30.0mm is too big. I suspect 29.?.
Pre-WW2 BSA, something of a diamond in the rough I believe