Since the 80's
diameters increased- top tube was ​​first
wall thicknesses reduced
the return of tapered tubes- Serotta, Tesch
down tube diameters increased
lugs declined in use
air hardened steels
steerer diameters went up thanks to Mtbs
​​​​​​​stainless tube sets from the suppliers- big money, but not as big a difference as when launched.