Originally Posted by seely
Shift housing does definately stretch... pull any shift housing off a bike after it has about 200mi on it and I promise the inner wire liner extends 1/16th-1/4" past the end of the housing where it was originally cut. I actually just pulled my shift housing tonight on my Haro and found the housing had not stretched since I first trimmed it after about 200mi of riding, which leads me to believe that yes, it is initial stretch as if it were anything else it would probably happen again.
not the inners stretching. it's the outer coating shrinking up a bit... getting pulled around as the cables and bike move. the inner wires are "compressionless" but the outer plastic coating is much less compression resistant.