The standing cable crossover triceps extension is a single-arm isolation exercise that uses a high cable pulley to extend the elbow diagonally down and across the body toward the opposite hip. The crossing cable path adds a rotational resistance component that the core and shoulder must control, on top of the direct triceps work. It's a useful accessory for building triceps size and lockout strength after pressing movements, and it trains the triceps through a different line of pull than a standard pushdown.
Muscles Targeted
- Primary: Triceps brachii
- Secondary: Anconeus, posterior deltoid
- Tertiary: Core (obliques and rectus abdominis), forearm stabilizers
Starting Position
Set a single handle on a high cable pulley, well above head height. Stand side-on to the machine and grasp the handle with the working hand so the cable crosses in front of your body toward the opposite hip. Start with the elbow bent close to 90 degrees, upper arm pinned near your ear, and a slight stagger in your stance for balance.
Execution Steps
- Pin the upper arm in place next to your head, keeping it stationary for the entire rep
- Extend at the elbow by driving your forearm down and across your body toward the opposite hip
- Lock out fully at the bottom, feeling maximum contraction in the triceps
- Pause briefly at full extension before reversing
- Return under control to the starting bent-elbow position, resisting the cable's pull back up
- Complete all reps on one side, then switch arms and repeat
Form Cues
- Keep the elbow fixed: All the movement should come from the forearm, not the shoulder or upper arm
- Resist rotation: Brace your core so the diagonal cable pull doesn't twist your torso
- Full lockout: Straighten the elbow completely at the bottom to get full triceps activation
- Controlled return: Don't let the cable yank your arm back up - control the eccentric
- Stagger your stance: A slight split stance improves balance against the diagonal pull
Common Mistakes
- Letting the elbow drift forward or out: This shifts work to the shoulder and reduces triceps isolation. Keep the upper arm pinned throughout.
- Twisting the torso to help the movement: Using body rotation instead of the triceps reduces the training effect and adds low-back strain. Keep the core braced and still.
- Using too much weight: Excess load forces you to swing the arm or lean, turning this into a momentum exercise. Drop the weight and control the pull.
- Partial range of motion: Stopping short of full elbow extension leaves gains on the table. Lock out fully on every rep.
- Snapping back to the start: Allowing the cable to yank the forearm back reduces eccentric stimulus. Control the return.
Variations
- Standing rope crossover extension: Use a rope attachment for a slightly different grip and hand path
- Bilateral crossover extension: Use two high pulleys and both arms simultaneously for a time-efficient variation
- Standard cable pushdown: Straight-down cable path, easier to isolate without the rotational demand
- Overhead cable triceps extension: Trains the long head of the triceps more directly with an overhead line of pull
- Cable kickback: Low pulley variation emphasizing peak contraction with the arm parallel to the floor
Tips for Progression
- Increase weight in small increments once you can complete all reps with a full, controlled lockout
- Add reps before adding load: build to 15 reps per side before increasing weight
- Slow the eccentric: take 2-3 seconds on the return to increase time under tension
- Superset with a compound press: pair with dips or close-grip bench press for a triceps-focused finisher
Training Notes
Use the standing cable crossover triceps extension as an isolation finisher 1-2 times per week after compound pressing work such as bench press or dips. Work in the 10-15 rep range per arm with a moderate weight that allows a full lockout and controlled return, resting 45-60 seconds between sets. Its diagonal cable path and rotational demand make it a useful triceps accessory that also reinforces core stability.