How to Do Machine Triceps Extension
Start and end of one clean rep of Machine Triceps Extension.
Quick facts
| Primary muscle | Triceps |
|---|---|
| Secondary muscles | — |
| Equipment | Machine |
| Category | Strength |
How to perform Machine Triceps Extension
- Adjust the seat to the appropriate height and make your weight selection. Place your upper arms against the pads and grasp the handles. This will be your starting position.
- Perform the movement by extending the elbow, pulling your lower arm away from your upper arm.
- Pause at the completion of the movement, and then slowly return the weight to the starting position.
- Avoid returning the weight all the way to the stops until the set is complete to keep tension on the muscles being worked.
Muscles worked
- Triceps (primary): straightens the elbow to lock out every press and pushdown.
Sets & reps by goal
| Goal | Sets × reps | Load | Rest |
|---|---|---|---|
| Strength | 3–5 × 3–5 | Heavy (~85%+) | 2–3 min |
| Hypertrophy | 3–4 × 8–12 | Moderate (~65–75%) | 60–90 s |
| Endurance | 2–3 × 15–20 | Lighter (~50–60%) | 30–45 s |
Pick the row that matches your goal. If you're newer, anchor in the hypertrophy range while you groove the form.
Form tips
- Fix the elbows in place and let only the forearms move, keeping the load on the triceps.
- Set the seat and pads so the machine's pivot lines up with the joint you're training before your first rep.
- Treat every rep the same — a repeatable setup and bar path is what lets you add weight safely over time.
- Warm up the pattern with a couple of lighter, submaximal sets before your working sets.
Common mistakes
- Letting the elbows flare and drift forward so the shoulders quietly take over.
- Leaving the seat or range on a setting that forces the joint into an awkward angle.
- Chasing weight jumps before the current load feels solid on every rep.
Frequently asked questions
What muscles does Machine Triceps Extension work?
Machine Triceps Extension is a focused movement that primarily works the triceps.
What equipment do I need for Machine Triceps Extension?
Machine Triceps Extension needs the corresponding weight-stack or plate-loaded machine.
How many sets and reps should I do for Machine Triceps Extension?
It depends on your goal: about 3–5 sets of 3–5 heavy reps for strength, 3–4 sets of 8–12 for muscle growth, or 2–3 sets of 15–20 for endurance. Pick the row that matches your goal. If you're newer, anchor in the hypertrophy range while you groove the form.
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