Hi, I used to run these cranks on my late 80's Profile X Factor. I am now trying to gain some insight on who the manufacturer ( crank arms only ) is. It looks like the the spider is Profile, and the sprocket is Pro-Neck. I looked on E-Bay under profile, sugino, pro-neck, GT and couldnt find anthing simular looking. Maybe they're generic. The bike they came on was a Profile X Factor ( late 1980's ) but I cant remeber much else. The crank arms do not say anything on them.
You have a nice example of 3rd generation profile cranks there. Very collectable.I have a set on an old 1991 elf cruiser as well http://bmxmuseum.com/forums/viewtopic.php?id=14699
This is the matching Profile X factor frame. Its all filthy as its been stored for many years. I'm going to use chrome polish on it, and try to restore it and sell it. I think it might be a 1992 model. Is that considered "vintage" by any standards.
You should post that thing on bmxmuseum.com, There is alot of good people and Bikes there, They can help you with your Questions and how much its worth now a days
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