The Tricep has three major parts
The Long head, Lateral head, Medial head
*Disclaimer - Most exercises will target more then one section of the muscle but still help optimize growth in specific area.
Free Weight (Barbell & Dumbbell)
Curl Bar Skull Crushers (flat grip)
Dumbbell skull Crushers (flat grip)
Machines
Tricep Cable push down
Tricep Cross Cable pushdown (JPG's)
Body weight
Dips (Tricep focused)
Free Weight (Barbell & Dumbbell)
Dumbbell Skull Crushers (strait Grip)
Close grip bench
Machines
Over Head Cable Crossovers
Body weight
Dips (Tricep focused)
Free Weight (Barbell & Dumbbell)
Dumbbell Skull Crushers (strait Grip)
Close grip bench
Machines
Over Head Cable Crossovers
Body weight
Bench dips
Dips(Tricep focused)