Chest & Back
Plyometrics
Shoulders & Arms
Yoga X
Legs & Back
Kenpo X
X Stretch
Core Synergistics
Chest, Shoulders & Triceps
Back & Biceps
Cardio X
Ab Ripper X
If the workout you are referring to is not on this list, then it is not part of the original P90X program. However, it's important to note that there have been different versions and variations of the P90X program released over the years, so there may be additional workouts that have been added or removed