Developing lower tricep Mass

[Gxp23]

If you look at the bottom back half of my right arm you will see that it dips in so i looked for the same answer you are. Turns out doing close grip bench press, dips and i think they are called pushdowns or pulldowns. Will work all 3 heads the medial head, the long head and the lateral head

This thread is pretty old, I doubt the OP has been waiting this long for you to come along and bump this.