They're stainless, this has been show/proven many times before (someone in their marketing dept. was lazy, and copied the PaceSetter description for the SSAC site... I've tried emailing them to correct this, but got no reply).
For an example, I own the oldest set from 4yrs ago, and have put almost 50k on them since my Dec '05 install.
Here's a pic showing my crossover last week, while replacing my tranny internal harness (bent pins):
Another pic from last fall, on the ground when I swapped to a ZZP interlock flex, after 3yrs of all weather use in NY/MI/MN:
- Dave