Biopace from Shimano was made to ease the pains of the knee. They came out in 1988.

Some people like them ,I didn't they suck especially on a track bike. It didn't feel right.

Messengers I know used them on the street as well as racing them seen the light and got rid of them. Shimano seen the light to and got rid of them too.

Use caution.

0.00, don't "F" a man due to him stating his opinion because only in the long run you will be "F" yourself.



S/F,
CEYA!