What's the difference? - 1984 Super Record (Track) vs. 1973-1975 Super Record (Track)

1984 Super Record (Track)

Groupset

4100 (1984)

1973-1975 Super Record (Track)

Groupset

4100

Shared parts

These groupsets share the following 2 parts:

Super Record Track

Crankset

4151

Super Record track

Headset

4141