why do you want to know this?
What does it say on the head badge?
It seems like I've heard of Service Cycle Bicycle Company, but I don't remember anything about them. It looks like an inexpensive yet ridable bicycle.
The main frame looks like aluminum, use a magnet to check. The fork is probably steel, again, use a magnet.
It's a inexpensive mongoose frame. Likely 7005 aluminum. Service cycle was the owner of mongoose before Bell sports. I think.
It's hard keeping track of who owns what name. The Mongoose name was owned by the following companies:
Maybe we should create threads to keep track of who owns what.
it can't be steel..
Originally Posted by unterhausen
the frame only weight about 3,5kg.. aluminium probably? or titanium?
It's still 7005 aluminum and not very light. A high quality aluminum frame weighs about 1.8K. The parts are nice however. If you remove the rear wheel, the derailleur hanger may have a logo to tell you who made the frame. My guess would be Apro.