One of the things people do for the Iditabike is to put electrical heat shrinking tubing on the cables. At super cold temperatures the cable housing can get brittle and crack. The heat shrinking tubing gives extra strength and will make sure the cables don't break in Antarctica.
After shrinking the tubing and installing on the bike. I wanted the shrink tubing to be red, but the tubing they had at the local O'Reilly store was kind of pink. So I guess I get to ride to the South Pole with pink cables.
I did a test of spray painting the cables red, but it didn't work too good.
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