in terms of groundbreaking gear .....
ozone bikes (especially their forks)
bill nitschkes 990 front brake mod.
threadless pegs ... pulse?
vector bob bars
king axles
profile cranks ... shame they let quality go so downhill
araya aero rims
bullseye cranks (2pc)
RGD
Standard
JAD
ACS 1 bolt stem that odyssey patented 10 years later and called it an original design
... just to name a few