Cable Rear Delt Fly
Standing between two high pulleys with the cables crossed in front of you, you sweep both straight arms back and out at head height. Working upright with the lines crossing means the rear delts are loaded hardest at full stretch and again at peak contraction, which no dumbbell version manages.
Own the movement
Set up first, then execute. Every cue below is something you can check on your next set.
Before the first rep
- Set both pulleys at or slightly above head height and load them identically.
- Grab the left handle with your right hand and the right handle with your left, so the cables cross in front of your chest.
- Step back a pace until there is tension on both cables with your arms fully crossed and extended.
- Stand with feet hip-width, one foot slightly forward for balance, ribs down and glutes lightly squeezed.
- Set the arms nearly straight with a small unchanging elbow bend, hands at about chin height.
Every rep
Breathing & tempo — Exhale as the arms open, inhale as they cross back. One second out, a one-second squeeze at the back, two to three seconds returning — the slow cross-over is what keeps tension on a muscle this small.
Sets, reps & load
Where to start, and what to change when it stops being hard.
Start at 2.5-5 kg per side and expect to stay in single digits for a long time. The honest test is whether you can hold a still torso and eye-level hands for the last rep of the last set. Add reps up to 20 first, then move the pin one plate and drop back to 12.
What goes wrong
The errors that show up most often, and the cue that fixes each one.
Stagger your stance and press the front foot into the floor. Fix your gaze on a point at eye level — if it rises during the set, the load is too heavy.
Stop the arms when they reach the plane of your torso. Let the shoulder blades stay where they are — retraction turns a rear delt fly into a wide row.
Take one more step back before rep one and check for tension with the arms fully crossed. The stretched position is where most of the growth stimulus lives.
Pick a mark on the wall at eye level and trace it with your knuckles every rep. When you cannot hold the height, end the set.
Why bother
Crossing the cables in front of you means each arm is pulled across the midline at the start, so the rear delt begins the rep in a longer position than a bent-over raise ever reaches. As the arms sweep back the resistance line stays roughly perpendicular to the arm the whole way, so there is no dead spot to coast through.
The other advantage is that you stand up. A bent-over raise makes your lower back a limiting factor and your breathing awkward; here your spine is stacked and the only thing that fatigues is the muscle you came for. That is what lets you push these into the 15-20 rep range without the set ending for the wrong reason.
Where it fits
After your heavy pulling and pressing, two to four sets of 12-20, twice a week. Rear delts recover fast and respond to frequency more than load, so two moderate sessions beat one punishing one. It pairs naturally with face pulls in the same block — one loads the arm sweep, the other the shoulder-blade retraction.
If this one isn't it
No kit, too hard, or too easy — here's where to go instead.
Same job, different kit
Start here instead
When this gets easy
Asked and answered
How high should the pulleys be set?
At or just above head height, so the cable pulls your arms slightly downward as well as forward. Setting them at chest height turns it into a standing chest fly in reverse and lets the mid-back take over. If your machine only goes to shoulder height, raise your arms a little to compensate.
Is this better than bent-over dumbbell raises?
For most people, yes. The cable keeps tension through the full arc where a dumbbell gives you nothing at the bottom, and standing upright means your lower back does not decide when the set ends. Dumbbells win only on availability and on the ability to go genuinely heavy, which is not what a rear delt needs.
Should I squeeze my shoulder blades at the end?
No. Retraction is the mid-back's job and it will happily take the work off the rear delt if you invite it. Keep the shoulder blades where they start and think about the upper arms travelling outwards. If you want retraction, do a row on purpose instead.
My arms are straight — should I bend the elbows more?
Keep a small fixed bend of 10-20 degrees and nothing more. A big bend shortens the lever, lets you use more weight, and quietly moves the work towards the mid-back. Straighter arms with less weight is the honest version.