Arms · Isolation

Overhead Dumbbell Triceps Extension

A triceps exercise holding a dumbbell overhead with both hands, emphasizing the long head through a deep stretch. Using both hands on one dumbbell allows more total load than the single-arm version, making it the mass-building member of the overhead extension family. It slots in after pressing as the primary stretch-position triceps builder in a session.

By Macros Inc Team Verified by Alex Dedmon Updated August 2026

Beginner Dumbbell Isolation Push
overhead-dumbbell-triceps-extension-poster
  • Level Beginner
  • Equipment Dumbbell
  • Primary Muscles Triceps
  • Movement Isolation Push

Demonstration

Watch the Form Demo

Technique

How to Do the Overhead Dumbbell Triceps Extension

  1. Sit or stand tall and press one dumbbell overhead, cupping the top head with both palms.
  2. Keep your elbows close together, pointing forward beside your ears.
  3. Bend at the elbows to lower the dumbbell behind your head.
  4. Descend until the triceps reach a deep stretch.
  5. Extend back to straight arms, squeezing at the top.
  6. Keep your upper arms vertical and still for the whole set.

Anatomy

Muscles Worked

arms
Primary muscles
Triceps

Do This

Form Cues

  • Hold the dumbbell with both hands cupping the top head.
  • Keep the elbows pointed forward and close together.
  • Lower until you feel a deep stretch behind the head.
  • Elbows track forward and stay narrow. The moment they flare, the stretch is gone.

Avoid This

Common Mistakes

  • Letting the elbows flare out as the weight lowers.
  • Arching the lower back to help the weight up.
  • Choosing a dumbbell too heavy to control behind the head.
  • Cutting the descent short as fatigue builds, which trims off the stretched range that drives the growth.

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