BodyKore GR633 Pectoral Fly/Rear Delt

Rear Delt Fly Machine: BodyKore GR633

If you’ve ever finished a pull day and thought, “How did my rear delts still get skipped?”—this rear delt fly machine is your fix. The BodyKore GR633 Pectoral Fly/Rear Delt is selectorized, commercial grade, and built for repeatable reps that actually add up over months (not just one flashy workout).

Why this rear delt fly machine

This machine solves one problem: rear delts and upper-back control often get undertrained because free weights drift, momentum creeps in, and form breaks when fatigue hits. The GR633 gives you a guided path and stable setup so the work stays where it belongs.

Two design choices do the heavy lifting:

• Extra-long 360° rotating handles that self-adjust to your path for pec fly and rear delt work
• Independent arms with 6 adjustable starting positions for pec fly, supporting unilateral and bilateral training

The evidence-based setup

On reverse fly machines, hand position can change posterior-shoulder muscle activity, including the posterior deltoid. Translation: grip and rotation aren’t “tiny details”—they decide whether you feel a clean rear-delt squeeze or your traps hijack the rep.

Quick setup check (30 seconds)

• Set the seat so your upper arms start near shoulder level (not low).
• Keep shoulders down; move slowly and cleanly.
• Start neutral on the handles, then rotate to the position that gives the cleanest rear-delt contraction.

Built like a daily-driver machine

This is the BodyKore Isolation Series – Selectorized Pectoral Fly/Back Extension. Unlike free weight exercises, isolation establishes concrete mechanics when performing a given exercise—so beginners feel safer and advanced lifters get tighter repeatability. It’s listed as commercial grade and rated to hold over 1000 lbs.

The build reads “serious” right away: rolled steel oval tubing, a precision-cut, selectorized weight stack, plus premium components like industrial galvanized steel cables and moisture-resistant upholstery.

Rear delt fly machine highlights

✅ 360° self-adjusting handles
✅ Independent arms, unilateral option
✅ 6 start positions for pec fly
✅ 8 seat positions for fit
✅ 2 rear-delt movement settings
✅ Urethane multi-grip handles
✅ Pad on top for protection
✅ Cup/phone/key holder built in
✅ 220 lb stack; 340 lb upgrade
✅ Rolled steel oval tubing frame

Specs that matter

• Dimensions: 57" x 56" x 77"
• Weight: listed as 502 lbs (some datasheets show 465 lb, depending on revision/shipping spec)
• Frame Color: Black or Silver
• Weight Stack: 220 lbs; upgradeable to 340 lbs
• Body Group Target: Chest, Lats, Traps
• # of Workouts: 4
• Assembly Time: 2 Hours; professional assembly not required
• Delivery: available nationwide (home delivery options vary by seller)

For planning and safety notes, the owner’s manual includes installation guidance (including spacing and inspection/maintenance expectations).
Get the docs here: Download Manual and Download Datasheet.

Warranty (North America only)

• Frame (not coatings): Lifetime
• Weight stacks: 10 years
• Pulleys: 10 years
• Pivot bearings: 10 years
• Other items not specified: 3 years
• Upholstery/cables/springs/grips: 1 year
• Accessories: 6 months

Who this machine is for

• Home Fitness Enthusiasts
• Commercial Fitness Facilities
• Fitness Professionals and Trainers
• Socially Conscious Consumers
• Individuals Seeking Personalised Fitness Solutions
• Health and Wellness Enthusiasts
• Corporate Wellness Programs
• Luxury Fitness Equipment Shoppers
• Consumers Seeking Equipment for Rehabilitation or Recovery
• Budget-Conscious Buyers
• Fitness Influencers and Bloggers
• Small Gym and Studio Owners
• Sports Teams and Athletic Programs
• Faith-Based Consumers
• Environmental-Conscious Consumers
• Young Professionals and Millennials
• Retirees and Seniors
• Families and Parents
• Eco-Conscious Fitness Enthusiasts
• Fitness Hobbyists and Weekend Warriors

From our Tennessee headquarters, Hamilton Home Fitness supports delivery, planning, and nationwide shipping across all US states. Visit the Hamilton Home Fitness website to move from “researching” to “installed and training.”

How to use it like you mean it

Rear delts respond best to clean reps and honest volume. Try one of these:

• Growth: 3–5 sets of 12–20, slow tempo, 1–2 reps in reserve
• Strength/control: 4–6 sets of 6–10, strict pause at peak
• Recovery-friendly: 2–3 sets of 15–25, light, pain-free range

People also ask

Is a rear delt fly machine the same as a reverse pec deck?
Usually, yes—many gyms use the same station, just turned around for rear delts.

What grip hits rear delts best?
Hand position can meaningfully change posterior-shoulder activation on reverse fly machines—start neutral, then adjust to the grip that keeps shoulders down and tension on the rear delts.

How do I stop my traps from taking over?
Raise the seat, keep shoulders down, and slow the rep so you can feel the back of the shoulder—not a shrug.

Is this only for bodybuilders?
No. Controlled posterior-shoulder work supports balanced training and can fit performance, coaching, and recovery-focused programs.

Final call

If rear delts have been the missing link in your shoulder look, posture, or pressing comfort, the BodyKore GR633 gives you a clean, repeatable way to fix it day after day. When you’re ready, lock in your setup, load the stack, and make every rep count.

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