Hello all,

I purchased a 1983 silver-gray Sekai road bicycle (Serial # M3C05057) last Sunday at a local flea market here in Southeastern Massachusetts for $90.00. I knew little or nothing about the Sekai brand but I could see immediately by it’s lines and build quality that this is a special machine.

I searched the net and found your forum and read-up on Sekai. At first I thought it was a model 4000 because it has Tange Champion #2 tubing, but because it has no evidence of a model number on the frame, and 41cm stays I began to think this is either a 5000 model or a custom build. The frame is fully chromed under the paint and has a Tange Levin headset and cast crown arguing in favor of it being a 5000 model, but no evidence of fork blade tubing labels, It has Suntour Superbe Pro rear dropouts and Shimano front dropouts.

Another odd thing is that it appears to have been sold by a company called Soloped, which is the name of a bike shop in Cape Town, South Africa.

I tried to include some images here, but but as a new member I am apparently unable to do so.

It has mostly Dura-ace ax components with the derailleurs changed-out to later 600 series, Nitto aero (drilled for wires) bars, Mavic CXP-12 rims, Kashimax saddle, Kalloy 26.8mm seatpost, Gran-Compe calipers, and no-name plastic pedals.

My intent is to clean it up for now and ride it as-is, albeit with a decent seatpost and quality pedals (I already ordered a nice set of DA ax pedals) and perhaps later, have it repainted with new decals.

Does anyone have any thoughts on this bike, what model it is, or any other information that may help properly identify it?

Thank you