Joined: Jul 2002
Posts: 40,863
Likes: 3,115
From: Sacramento, California, USA
Bikes: Specialized Tarmac, Canyon Exceed, Specialized Transition, Ellsworth Roots, Ridley Excalibur
Steve Rex is now making CF frames too. They're gorgeous.
Anyway, I agree with Bob and Umney: a custom is when the frame is built specifically for you according to your body and riding style.
As for a bike that's been built up with components specifically chosen by the rider, all my bikes are like that. I wouldn't call those customs. How about "hand-assembled" ?