Amazingly the Specialized Epic SWorks mountain frame I hammered for 5 years never had any issues. It was a 1990ish model and very stout. Composite glued to cromo lugs. The 2100 Trek Composite I had rotted out within 5 years. It just couldn't handle the salt from sweat. I called it the Ralph Nadar bike as it became unsafe to ride at any speed. lol