Elbows drifting
Keep your upper arms planted on the pad so the shoulders and chest do not help push.
Isolation · Machine
Machine Tricep Extension
The machine tricep extension fixes your upper arms on a pad while you straighten your elbows against a guided lever. It isolates the triceps with a stable, repeatable path and suits anyone wanting direct arm work, especially if free-weight extensions bother the elbows.
- Primary
- Triceps
- Starting rep range
- 10–15 reps
- Target effort
- 1 reps in reserve
- Progression
- 2.5 kg / one stack step
Muscles worked
All three triceps heads straighten the elbow. Machines that set your arms out in front or overhead stretch the long head more, giving it a bigger share of the work.
How to set up
- Adjust the seat so your elbows line up with the machine's pivot point.
- Rest the backs of your upper arms on the pad.
- Grip the handles with wrists straight.
- Sit tall with your back against the support and feet planted.
How to do each rep
- Push the handles down or forward until your elbows are straight.
- Squeeze the triceps at lockout for a moment.
- Return over 2-3 seconds until your elbows are well bent and the triceps feel stretched.
- Keep your upper arms still; only the forearms move.
Common machine tricep extension mistakes
Pivot misaligned
Adjust the seat so your elbows line up with the machine's axis; misalignment strains the elbow and shortens the range.
Short, choppy reps
Use the full range from a deep bend to full lockout, lowering the weight if needed.
Sets, reps, and progression
Surpass starts the machine tricep extension at 10–15 reps with about 1 reps in reserve. As an isolation exercise it fits well after your main compound lifts.
Use 10-15 reps and add one pin once all sets hit the top. If your elbows feel achy, stay in higher reps rather than pushing heavy loads.
Know what to lift next time
Surpass shows what you lifted last time beside a target for this set, and adjusts it from your reps and RIR. Free on iPhone, no account needed.
Machine Tricep Extension alternatives
These train the same main muscles. Swap when the equipment is busy, something hurts, or progress has stalled for several weeks.
Questions
Is the tricep extension machine effective?
Yes. It isolates the triceps and keeps tension steady through the rep, making it a good complement to pressing movements.
Tricep machine vs cable pushdown?
Both isolate the triceps. The machine is more stable and repeatable; cables give more angle and attachment options. Pick the one that feels best on your elbows.