Originally Posted by
Trakhak
The reason it disappeared:
When Biopace first appeared (on sport-touring bikes but not racing bikes), reviewers in bike magazines praised it to the skies.
Bike magazines made their money off of advertising and would praise anything that paid their bills. I've come to put very little faith in what "professional" reviewers claim as they're fickle and will change their views tomorrow if a better offer comes along or if the bike industry as a whole tugs at their purse strings.