The cable crossover rear delt fly is a standing isolation exercise performed with the arms crossed between two high pulleys, pulling the handles out and back to train the rear deltoids. Because the cables cross in front of you, the load pulls the arms across the chest at the start and stays on the rear delts through the whole arc, including the finish, where a dumbbell reverse fly has already gone slack. Standing upright also removes the lower back demand of a bent-over version. Lifters program it late in a shoulder or back session as a rear delt finisher.
What Muscles Does the Cable Crossover Rear Delt Fly Work?
- Primary: Posterior deltoid (rear shoulder)
- Secondary: Rhomboids, middle trapezius, infraspinatus, teres minor
- Tertiary: Triceps brachii (long head), erector spinae, lower trapezius
How Do You Set Up for the Cable Crossover Rear Delt Fly?
Set both pulleys of acablecrossover slightly above shoulder height and attach D-handles. Stand in the centre facing the machine, feet shoulder width apart, knees soft. Grasp the left cable with the right hand and the right cable with the left hand so the arms cross in front of the chest. Step back until the stacks lift, then hold the arms straight forward with a slight bend at the elbow.
How Do You Perform the Cable Crossover Rear Delt Fly?
- Set the arms crossed in front of the chest at shoulder height, elbows slightly bent and shoulder blades relaxed forward.
- Pull the hands out and back in a wide horizontal arc, leading with the elbows and keeping them at shoulder height.
- Stop when the arms form a straight line across the shoulders, hands slightly behind the torso, palms facing forward.
- Hold the end position for one count, squeezing the rear delts before the shoulder blades finish pulling together.
- Return the hands slowly along the same arc until the cables cross again and the rear delts stretch.
- Reset the elbow bend and the stance, then open the arms for the next rep.
What Are the Key Form Cues?
- Lead with the elbows: drive them backward and let the hands follow, so the rear delt moves the arm before the upper back squeezes.
- Long arms, soft elbows: keep the same slight bend throughout so the lever stays long and the load stays on the delts.
- Keep the hands at shoulder height through the arc; dropping them turns the fly into a row.
- Feel the stretch across the back of the shoulders when the cables cross at the start.
- Keep the ribs down and the torso still so only the arms move.
What Are the Most Common Mistakes?
- Loading the stack too heavy: the elbows bend, the hands drop and the movement becomes a rear delt row driven by the traps; drop a plate a side until the arms stay long.
- Pulling the shoulder blades together first: the rhomboids do the work the rear delt should, and the arc shortens; leave the blades relaxed until the arms pass the torso line.
- Swinging the torso backward to start the rep: momentum opens the arms and the delts only catch the load at the end; stand still and open from a dead stop.
- Letting the pulleys sit too low: the cables pull the arms down and the movement leaves the horizontal plane; set the pulleys just above shoulder height.
- Rushing the return: the crossed position is where the rear delt stretches under load; take two counts back to the start.
What Are the Best Cable Crossover Rear Delt Fly Variations?
- Machine reverse fly: a fixed arc with a chest pad for lifters who cannot keep the torso still.
- Cable crossover rear delt fly with a pause: a three-second hold at the open position.
- Single-arm cable rear delt fly: one cable at a time, free hand on the frame to stop the torso turning.
- High-to-low cable rear delt fly: pulleys above head height, hands travelling down and back.
- Bent-over dumbbell rear delt raise: the same arc with dumbbells, lightest at the finish.
How Do You Progress the Cable Crossover Rear Delt Fly?
- Add one plate a side once every set finishes at the top of the rep range with the elbows still barely bent.
- Build from 12 reps a set to 20 before each plate jump.
- Add a fourth set when three no longer leave the rear delts fatigued.
- Add a two-second hold at the open position, or return on a three-count.
How Should You Program the Cable Crossover Rear Delt Fly?
Place the cable crossover rear delt fly at the end of a shoulder or back session, after presses or rows, two or three times a week because the rear delts recover quickly. Work 3 to 4 sets of 12 to 20 reps with 45 to 60 seconds of rest. It pairs with a face pull or a lateral raise to finish the shoulder from every side.