Cilo Fixed Gear

Thanks for that info. The bike does have internal cable routing on the top tube as you suggest. The strange thing is that the bike was bought in France and presumably supplies for the French market.

Actually, it's quite easy to tell if this is definitely a Cilo Challenger. If you still have the original headsest and it is the kind with white plastic cups covers, then it's a Cilo Challenger for sure.
Now, depending on where the bike was bought originally,it might not be such a surprise. I've seen a lot of Swiss spec'd bikes around Jura, Ain, Savoie and other places close to the Swiss border. Where did you get it?

Hi, it does have the white plastic covers on the headset races. The bike was originally bought new in Narbonne (close to Spain). The BB is definitely Italian threading, 70mm wide both threads r/h. The original equipement is all Shimano RX100. Cheers, Ian

Now, I don't know how an Italian spec'd Swiss bike ended up in Narbonne, but it's a nice story to hear anyway.
Shimano RX100 was the standard equipment for Cilo Challengers, but all the Challengers I saw had a BSA BB. Italian spec'd Cilo I know of were sporting Campagnolo stuff.
Weird beast you have here, but it's a Challenger for sure, so it's a pretty good bike! Have fun!

Hi Kumotaki, thanks for the infomation. The paint job seems quite unusual. I've searched high and low on the internet but not seen another Cilo with that paint. It certainly is a nice frame. Being quite tall at 1.85m I need a 60cm frame and they can be a bit whippy, this one however is nice and stiff. I went out for quick 30km ride on Saturday morning before the rain set in and the bike rides beautifully. Ian

The Cilo factory was situated 100km away from France and 200km away from Italia. It never made sense to have a single standard in Switzerland as everybody was (and still is) buying parts from everywhere. You're never that far away from a supplier across the border, so sometimes it's Italia, sometimes it's France, sometimes it's Germany.