ISO-Lateral Shoulder Press DRE8004
ISO-Lateral Shoulder Press DRE8004
The Dynasty Fitness DRE8004 ISO-Lateral Shoulder Press is a selectorized overhead press machine with independent converging arms that simulate the shoulder joint's natural pressing trajectory, so each deltoid drives through its own movement path without the bilateral compensation that a fixed bar forces when one shoulder is stronger than the other. A multi-handle design provides two distinct pressing positions from the same station: standard overhead grips for full deltoid pressing through the complete overhead arc, and a hammer grip position that specifically targets the anterior deltoid with reduced shoulder stress by changing the wrist and elbow angle through the press — making it the more accessible option for users with shoulder sensitivity or those prioritising front deltoid development with less lateral involvement.
A 5-position backrest combined with a pneumatic rack-and-pinion seat that holds position under load with zero movement provides stable, precise support for the full overhead press range, and all adjustments operate single-handed. The Dynasty Flex-Stack System delivers a true 1:1 felt weight ratio with a 5kg base and 2.5kg micro-increment plates for precise progressive loading. Built to commercial grade at 66"×57"×63" with a 210 lb standard stack and a 250 lb upgrade option available through Dynasty Fitness, the DRE8004 is built for commercial gyms, personal training studios, and serious home gym setups where ISO-lateral shoulder pressing with biomechanically specific grip options is a deltoid programming priority.
- ISO-lateral independent converging arms follow the shoulder joint's natural pressing trajectory so each deltoid works through its own full range of motion and reaches its own peak contraction without the stronger arm compensating for the weaker one across any rep
- Dual-handle design offers standard overhead grips for complete deltoid pressing and a hammer grip position that specifically targets the anterior deltoid with reduced shoulder stress — two distinct biomechanical functions from the same station rather than two ways to hold the same press
- Pneumatic rack-and-pinion seat holds position under load with zero movement during heavy overhead pressing, combined with a 5-position backrest and single-hand operation on all adjustments so setup between users and between sets stays fast and stable
- Dynasty Flex-Stack System delivers a true 1:1 felt weight ratio with 2.5kg micro-increment plates starting at a 5kg base, giving shoulder pressing the fine-tuning granularity that overhead movements require when progressing in smaller steps than compound pushing exercises
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Exercises and muscles targeted
Exercises and muscles targeted
| Exercise | Muscles Targeted |
|---|---|
| ISO-Lateral Shoulder Press — Standard Grip | Anterior Deltoid (primary), Lateral Deltoid (primary — overhead press path recruits all three deltoid heads), Triceps Brachii (secondary — elbow extension at lockout), Upper Trapezius (secondary — scapular elevation at top), Serratus Anterior (upward scapular rotation) |
| ISO-Lateral Shoulder Press — Hammer Grip | Anterior Deltoid (primary — hammer grip positions the forearm to increase anterior deltoid emphasis), Triceps Brachii (secondary — reduced elbow flare reduces triceps involvement vs standard grip), Upper Trapezius (secondary), Lateral Deltoid (reduced secondary compared to standard grip) |
| Unilateral ISO Shoulder Press (single arm) | Anterior Deltoid (unilateral, primary), Lateral Deltoid (primary), Core (anti-rotation stabiliser under asymmetric overhead load), Upper Trapezius (secondary), Rotator Cuff — Supraspinatus, Infraspinatus (stabilisers — increased unilateral demand) |
| ISO Shoulder Press — Isometric Hold (lockout) | Anterior and Lateral Deltoid (sustained isometric at full overhead extension), Triceps Brachii (isometric at lockout), Upper Trapezius, Serratus Anterior (sustained scapular upward rotation), Rotator Cuff (sustained joint stabilisation throughout hold) |
| ISO Shoulder Press — Slow Eccentric | Anterior and Lateral Deltoid (eccentric loading through the full descending arc — maximum hypertrophy stimulus), Triceps Brachii (eccentric), each arm descends on its own independent path without being stopped by the opposite arm's position |
| Alternating ISO Shoulder Press | Anterior and Lateral Deltoid (alternating per rep — each arm drives independently through full convergence arc), Core (increased anti-rotation demand per alternating press), Rotator Cuff (dynamic stabiliser per alternating overhead load) |
The DRE8004 trains the deltoids through an overhead pressing path that converges inward as the arms extend, replicating the natural shoulder joint trajectory more closely than a fixed bilateral bar. The standard grip recruits all three deltoid heads through the full press path. The hammer grip narrows the emphasis toward the anterior deltoid by positioning the forearm in the neutral wrist orientation that reduces lateral deltoid and triceps contribution while maintaining a mechanically sound shoulder position. The Dynasty Flex-Stack System's 1:1 felt weight ratio means both grip options deliver accurate, consistent resistance through the full overhead arc in both the concentric and eccentric phases.
Who this machine is built for
Who this machine is built for
How to setup and use
How to setup and use
Owner's Manual
Owner's Manual
Access the complete assembly guide, parts list, and maintenance schedule below.
Shipping & Delivery
Shipping & Delivery
All Dynasty Fitness equipment ships free across the 48 contiguous US states via freight carrier. If the product description says preorder, we'll send you an estimated delivery date via email.
Estimated delivery: 7–14 business days from order confirmation. You will receive a tracking number and a delivery window confirmation call before your shipment arrives. Deliveries are curbside standard, white glove delivery to room of choice is available at checkout.
Returns: Free within 30 days of delivery. Items must be in original condition and packaging. Refunds processed within 5 business days of return receipt.
Questions? Contact our team at:
📧Email: info@thedynastyfitness.com
📞Call: +1 (213)-584-0858
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Need a buying guide?
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Need Installation Help?
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| Product Information | |
| Product Name | ISO-Lateral Shoulder Press |
| Model | DRE8004 |
| Series | DRE80 Selectorized Series |
| Product Type | Selectorized ISO-Lateral Shoulder Press Machine |
| Function | ISO-lateral independent converging overhead press — bilateral and unilateral |
| Target Muscles | Anterior Deltoid, Lateral Deltoid (primary), Triceps Brachii, Upper Trapezius (secondary) |
| Resistance System | Dynasty Flex-Stack System — 1:1 felt weight ratio |
| Grade | Commercial |
| Colour | Black |
| Dimensions and Weight | |
| Length | 66 in (167.5 cm) |
| Width | 57 in (144.4 cm) |
| Height | 63 in (160.2 cm) |
| Net Weight | 578 lbs (262 kg) |
| Weight Stack | |
| Standard Weight Stack | 210 lbs |
| Upgraded Weight Stack | 250 lbs — contact Dynasty Fitness |
| Base Weight | 5 kg |
| Micro-Increment Plates | 2.5 kg x2 |
| Arms and Handles | |
| Arm Design | ISO-lateral independent — left and right arm frames on separate converging paths |
| Standard Overhead Grips | 36×28×460mm x2 — full deltoid overhead press |
| Hammer Grips | 28×36×130mm x2 — anterior deltoid emphasis, reduced shoulder stress |
| Arm Counterweights | Clump weights x2 per arm — balances mechanical arm weight for 1:1 felt ratio accuracy |
| Seat and Adjustability | |
| Seat Adjustment | Pneumatic rack-and-pinion — single-hand, zero movement under load |
| Backrest Positions | 5 positions |
| Adjustment Operation | All adjustments single-hand operable |
| Transport Wheels | 3 x built-in rolling wheels |
| Mechanism and Bearings | |
| Pulleys | 4.5" pulley x4, 3.5" pulley x1, V-pulley x1 |
| Bearings | 6205 x4, Joint Bearing M12 x2 |
| Frame and Construction | |
| Main Frame Tubing | 1.97"×5.9"×0.1" rectangular steel |
| Movement Arm Tubing | Φ2.4"×0.1" |
| Indoor Use Only | Yes |
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We are committed to equipment that stands the test of time — and to making sure the people who train the hardest have access to the tools that match their effort.
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