Load video: Seated Arm Curl/Extension DRE8044

Exercises and muscles targeted

Exercise	Muscles Targeted
Seated Biceps Curl (arm pad supported)	Biceps Brachii — both heads (primary — seated preacher-style position anchors upper arm on arm pad for isolation), Brachialis (primary), Brachioradialis (secondary)
Seated Biceps Curl — Supination Emphasis	Biceps Brachii — Short Head (increased at peak — the dual-angle handle's 68° range allows the wrist to fully supinate at the top of the curl), Supinator (secondary activation at peak), Brachialis (primary co-contraction)
Seated Triceps Extension (overhead, arm pad supported)	Triceps Brachii — Long Head (primary — overhead position with upper arm anchored loads the long head at its most stretched position), Triceps Brachii — Lateral and Medial Heads (primary), Anconeus (secondary)
Seated Triceps Extension — Slow Eccentric	Triceps Brachii — all three heads (eccentric lengthening from full elbow extension through the fully flexed starting position — maximum triceps long head hypertrophy stimulus due to the overhead stretch loading), 1:1 felt weight maintains full resistance through the eccentric return
Seated Biceps Curl — Slow Eccentric	Biceps Brachii (eccentric lengthening through the full lowering arc from peak contraction to full extension — arm pad prevents swinging and keeps tension through the complete eccentric range), Brachialis (eccentric co-contraction)
Superset — Curl into Extension (same session)	Biceps Brachii (curl sets) and Triceps Brachii — Long Head (extension sets with maximum overhead stretch) — complete seated arm superset from one station, switching between the biceps (2-position) and triceps (3-position) arm settings between sets

The seated chest-pad position is the key difference between the DRE8044 and its standing counterpart the DRE8041. The arm and chest pad anchors the upper arm and chest during both exercises, removing the lower body stability demand and eliminating torso lean and momentum from both the curl and extension. This allows heavier loads to be used at greater precision than standing alternatives — the full resistance of every rep goes into the target muscle rather than being absorbed by balance and core compensation.

Who this machine is built for

Serious Home Gym Builders
A seated dual-function arm machine with chest pad support, dual-angle adaptive handles, 2+3 position alignment, 8-position back pad, and an air-assist infinitely adjustable seat covers both sides of dedicated arm development at 54.3"×47.5"×63.1" with a 160 lb 1:1 stack. For a home gym where seated arm isolation with chest support is the arm training priority, the DRE8044 delivers it for both biceps and triceps from one compact footprint.

Bodybuilders and Physique Athletes
Seated overhead triceps extension with the upper arm anchored against a chest pad is one of the most effective long-head triceps exercises available in a machine format — the combination of the overhead position and fixed arm anchor produces the maximum triceps long head stretch under load that free-weight lying extensions and cable pushdowns cannot replicate at the same level of muscle isolation. The 8-position back pad and air-assist seat allow precise position optimisation for every arm length, and the dual-angle handle's 68° range allows the wrist to find its natural position through both the extension and curl arcs without elbow compensation.

Commercial Gym Owners and Operators
A seated dual-function arm machine with chest pad support is a distinct addition to a commercial arm training zone alongside standing alternatives — the seated position and chest support make it accessible to a wider user demographic, including those who cannot maintain balance under heavy standing arm loading. The 2+3 arm adjustment system covers the full limb length range of a commercial membership, and the pneumatic seat adjusts between users effortlessly without tools or stepped mechanism resistance.

Personal Trainers and Private Studios
The seated chest-pad position removes balance compensation from both the curl and extension, which allows trainers to programme heavier isolation loads with cleaner technique than standing alternatives provide. The 8-position back pad covers the posture variation across different client body types for both exercises, and the 68° handle range accommodates wrist position variation between clients without requiring grip coaching through the full arc.

Physical Therapists and Sports Medicine Practitioners
Seated chest-supported elbow flexion and extension exercises are among the safest machine-based arm loading options for post-surgical patients and those with upper body instability — the chest and arm pad support removes all shoulder and trunk loading, allowing the elbow joint to be loaded in isolation at precisely controlled weights. The 2+3 position alignment system accommodates patient limb length variations to avoid elbow joint shear from pivot misalignment. Exercise selection, load, and range of motion must always follow the clinical programme specific to each patient's condition and recovery stage.

How to setup and use

Setting Up the DRE8044

Select the working weight on the stack using the selector pin. Note that the working load for triceps extension is typically different from the biceps curl weight — the air-assist seat makes quick adjustments between exercises easy.
Select the exercise mode — biceps curl or triceps extension — and set the arm position via the change rack mechanism to the correct position for the selected exercise. Biceps mode has 2 position options; triceps mode has 3.
Set the back pad to one of 8 positions so the back is fully supported with the chest making comfortable contact with the arm pad from the front.
Adjust the seat height using the pneumatic air-assist mechanism until the upper arms rest naturally and comfortably across the arm pad with the elbows at the machine's pivot point. The infinite adjustment covers the full range of user seated heights precisely.
Grip both dual-angle handles firmly. The handles will orient naturally to the comfortable wrist position at the starting point of the exercise.
Confirm the chest is in full contact with the arm pad, the back is against the back pad, and both feet are on the treadle footrest before beginning.

Performing Seated Biceps Curl

From the starting position with both arms fully extended and the biceps at their greatest stretch, curl both handles upward by contracting the biceps and driving the forearms toward the shoulders.
Allow the handles to adapt through their 68° range — they will follow the natural forearm rotation as the wrist supinates through the curl. The chest and arm pad prevent the upper arms from rising off the pad during the pull.
Drive to peak contraction, hold for one to two seconds, then lower under full eccentric control through the complete arc to the fully extended starting position. The arm pad ensures the eccentric resistance is absorbed entirely by the biceps rather than by any shoulder momentum.

Performing Seated Triceps Extension

Switch the arm position to one of the 3 triceps mode settings that places the pivot at the correct elbow alignment for the extension arc.
Grip both handles with the arms in the overhead starting position — elbows bent and hands behind or above the head.
Extend both elbows to full lockout by contracting the triceps through the overhead arc. The chest pad provides anterior support that keeps the upper arms from moving forward during the press — maintaining the overhead position that loads the triceps long head.
Return under full eccentric control through the complete arc to the starting flexed position. The overhead eccentric loading is where the long head receives its greatest stretch stimulus.

Owner's Manual

Access the complete assembly guide, parts list, and maintenance schedule below.

Download Owners Manual

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

Need a buying guide?

Looking for one to one support before making final decision?
Feel free to contact us. Our expert support team would love to assist you.

Need Installation Help?

We have partnered with another company to help provide installation around the country. Please use the link below to see the price per machine for installation
See Installation Rates

Payment & Security

Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.

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Seated Arm Curl/Extension DRE8044

$2,649.00

$2,649.00 ~~$2,949.00~~ 10% off (Save$300.00 )

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The Dynasty Fitness DRE8044 Seated Arm Curl/Extension is a dual-function selectorized machine covering seated biceps curls and triceps extensions from one chest-supported station — with dual-angle extended handles spanning 68° of motion that adapt to natural forearm rotation to maintain a neutral wrist through both exercises, a 2+3 arm adjustment system (2 positions for biceps, 3 for triceps) aligning each user's forearm length precisely, an ergonomic arm and chest pad, 8-position back pad, and an infinitely adjustable air-assist seat. Dynasty Flex-Stack System 1:1 felt weight ratio at 160 lbs. Built at 54.3"×47.5"×63.1".

Dual-angle extended handles spanning 68° of motion adapt dynamically to the natural forearm rotation that occurs through both the curl and extension arcs — maintaining a neutral, comfortable wrist position throughout both exercises and reducing the joint stress that fixed-angle handles create when the wrist is forced to hold a position through the movement
2+3 arm adjustment system — 2 dedicated positions for biceps curl alignment and 3 dedicated positions for triceps extension alignment — ensures the machine's mechanical pivot point aligns precisely with the user's elbow joint for each exercise mode, producing smoother, more natural movement and better force transmission than a one-size-fits-all fixed arm position
Ergonomically contoured arm pad and chest pad accommodate varying shoulder widths and keep the body in a natural supported alignment through both exercises, allowing the biceps and triceps to work in complete isolation without torso or shoulder compensation
Dynasty Flex-Stack System delivers 1:1 felt weight at 160 lbs — the 8-position back pad and infinitely adjustable air-assist seat together cover every user body proportion to find the exact arm angle that produces the greatest biceps and triceps stimulus through the full range

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Exercises and muscles targeted

Exercise	Muscles Targeted
Seated Biceps Curl (arm pad supported)	Biceps Brachii — both heads (primary — seated preacher-style position anchors upper arm on arm pad for isolation), Brachialis (primary), Brachioradialis (secondary)
Seated Biceps Curl — Supination Emphasis	Biceps Brachii — Short Head (increased at peak — the dual-angle handle's 68° range allows the wrist to fully supinate at the top of the curl), Supinator (secondary activation at peak), Brachialis (primary co-contraction)
Seated Triceps Extension (overhead, arm pad supported)	Triceps Brachii — Long Head (primary — overhead position with upper arm anchored loads the long head at its most stretched position), Triceps Brachii — Lateral and Medial Heads (primary), Anconeus (secondary)
Seated Triceps Extension — Slow Eccentric	Triceps Brachii — all three heads (eccentric lengthening from full elbow extension through the fully flexed starting position — maximum triceps long head hypertrophy stimulus due to the overhead stretch loading), 1:1 felt weight maintains full resistance through the eccentric return
Seated Biceps Curl — Slow Eccentric	Biceps Brachii (eccentric lengthening through the full lowering arc from peak contraction to full extension — arm pad prevents swinging and keeps tension through the complete eccentric range), Brachialis (eccentric co-contraction)
Superset — Curl into Extension (same session)	Biceps Brachii (curl sets) and Triceps Brachii — Long Head (extension sets with maximum overhead stretch) — complete seated arm superset from one station, switching between the biceps (2-position) and triceps (3-position) arm settings between sets

Who this machine is built for

How to setup and use

Setting Up the DRE8044

Select the working weight on the stack using the selector pin. Note that the working load for triceps extension is typically different from the biceps curl weight — the air-assist seat makes quick adjustments between exercises easy.
Select the exercise mode — biceps curl or triceps extension — and set the arm position via the change rack mechanism to the correct position for the selected exercise. Biceps mode has 2 position options; triceps mode has 3.
Set the back pad to one of 8 positions so the back is fully supported with the chest making comfortable contact with the arm pad from the front.
Adjust the seat height using the pneumatic air-assist mechanism until the upper arms rest naturally and comfortably across the arm pad with the elbows at the machine's pivot point. The infinite adjustment covers the full range of user seated heights precisely.
Grip both dual-angle handles firmly. The handles will orient naturally to the comfortable wrist position at the starting point of the exercise.
Confirm the chest is in full contact with the arm pad, the back is against the back pad, and both feet are on the treadle footrest before beginning.

Performing Seated Biceps Curl

From the starting position with both arms fully extended and the biceps at their greatest stretch, curl both handles upward by contracting the biceps and driving the forearms toward the shoulders.
Allow the handles to adapt through their 68° range — they will follow the natural forearm rotation as the wrist supinates through the curl. The chest and arm pad prevent the upper arms from rising off the pad during the pull.
Drive to peak contraction, hold for one to two seconds, then lower under full eccentric control through the complete arc to the fully extended starting position. The arm pad ensures the eccentric resistance is absorbed entirely by the biceps rather than by any shoulder momentum.

Performing Seated Triceps Extension

Switch the arm position to one of the 3 triceps mode settings that places the pivot at the correct elbow alignment for the extension arc.
Grip both handles with the arms in the overhead starting position — elbows bent and hands behind or above the head.
Extend both elbows to full lockout by contracting the triceps through the overhead arc. The chest pad provides anterior support that keeps the upper arms from moving forward during the press — maintaining the overhead position that loads the triceps long head.
Return under full eccentric control through the complete arc to the starting flexed position. The overhead eccentric loading is where the long head receives its greatest stretch stimulus.

Owner's Manual

Access the complete assembly guide, parts list, and maintenance schedule below.

Download Owners Manual

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.

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

Need a buying guide?

Looking for one to one support before making final decision?
Feel free to contact us. Our expert support team would love to assist you.

Need Installation Help?

We have partnered with another company to help provide installation around the country. Please use the link below to see the price per machine for installation
See Installation Rates

Payment & Security

Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.

Seated Arm Curl/Extension DRE8044

$2,649.00

$2,649.00 ~~$2,949.00~~ 10% off (Save$300.00 )

Key Features

Dual-Angle Extended Handles

The handles span a 68° range of motion via a lever hinge and spinwheel shaft mechanism, adapting dynamically to the forearm's natural rotation through both the curl and extension arcs. Unlike fixed-angle handles that lock the wrist into one position throughout the movement, the 68° range allows the grip to follow the natural path of the forearm — supinating through the curl arc for the biceps and finding the comfortable neutral position through the overhead extension arc for the triceps. This dynamic adaptation reduces wrist and elbow joint stress at the load levels where fixed-handle designs generate increasing discomfort, and maintains efficient force transmission between the hand and the machine's pivot throughout both exercises.

2+3 Arm Adjustment System

Two dedicated arm positions optimise the biceps curl arc and three dedicated positions cover the triceps extension arc — a total of five settings, each calibrated to the different mechanical requirements of elbow flexion versus elbow extension from the supported seated position. The purpose of separate positions per exercise is the same as the arm length alignment on the DRE8041: the machine's pivot must align with the user's elbow joint pivot for smooth, joint-safe movement. The five settings collectively accommodate the forearm length range of a full commercial membership for both exercises.

Ergonomic Arm Pad and Chest Pad

The arm pad and chest pad form a combined support surface that anchors the upper arm and chest simultaneously during both exercises. The arm pad prevents the elbows from rising off the support surface under heavy curl loading — which is the compensation pattern that redirects loading from the biceps to the anterior deltoid and shoulder. The chest pad provides anterior trunk contact that stabilises the torso during the triceps overhead extension without requiring the core muscles to generate the stability that standing triceps exercises demand. The contoured shape accommodates varying shoulder widths so the arm pad contact is consistent across different user builds.

8-Position Back Pad and Air-Assist Seat

The back pad adjusts across 8 positions to set the torso angle for each user's back length and preferred position against the arm pad. The pneumatic air-assist seat adjusts infinitely along inner and outer slide rails — the same gas spring mechanism as the DRE8031 and DRE8041 — covering the full range of seated heights without stepped positions. Together these two adjustments control the exact height at which the upper arms rest on the arm pad and the angle of the elbow relative to the machine's pivot, which are the two positioning variables that determine whether the arm exercises load the biceps and triceps through their complete range or only through a portion of it.

Product Information
Product Name	Seated Arm Curl/Extension
Model	DRE8044
Series	DRE80 Selectorized Series
Product Type	Selectorized Dual-Function Seated Arm Curl and Extension Machine
Functions	Seated biceps curl and seated triceps extension — arm pad and chest pad supported
Target Muscles	Biceps Brachii, Brachialis (curl primary) — Triceps Brachii all heads, Long Head emphasis (extension primary)
Grade	Commercial
Main Frame Tubing	PT50×100×2.5mm
Colour	Black
Dimensions and Weight
Length	54.3 in (138.0 cm)
Width	47.5 in (120.7 cm)
Height	63.1 in (160.2 cm)
Net Weight	313 lbs (142 kg)
Weight Stack
Standard Weight Stack	160 lbs
Resistance System	Dynasty Flex-Stack System — 1:1 felt weight ratio
Handle and Arm System
Handle Type	Dual-angle extended — 68° range, dynamically adapts to forearm rotation
Arm Positions — Biceps	2 positions — forearm length alignment for curl mode
Arm Positions — Triceps	3 positions — forearm length alignment for extension mode
Total Arm Positions	5 (2 biceps + 3 triceps)
Support and Adjustability
Arm Pad and Chest Pad	Ergonomically contoured — accommodates varying shoulder widths
Back Pad Positions	8 positions
Seat Adjustment	Infinitely adjustable — pneumatic air-assist, inner/outer slide rails
Footrest	Treadle
Frame and Construction
Bearings	6005-2Z ×6, copper bearings ×2
Pulleys	Large ×5, small ×2
Indoor Use Only	Yes

Q: What is the difference between the DRE8044 and the DRE8041 Standing Total Arms?
A: The DRE8041 is a standing machine — the user stands on a large foot platform and trains both arms without body support, which requires core and hip stability through both exercises. The DRE8044 is a seated machine with an arm pad and chest pad — the upper arm and chest are both supported, removing the lower body and core stability demand and isolating the biceps and triceps in a preacher-style supported position. The DRE8041 uses 360° rotating handles and a cam resistance mechanism with 4 arm length + 10 height positions (13 total). The DRE8044 uses 68° dual-angle handles with a 2+3 position system and adds an 8-position back pad. For standing functional arm training and variety, the DRE8041. For seated isolation with maximum upper arm anchoring, the DRE8044.

Q: What does the 68° handle range do and how is it different from a fixed handle?
A: The dual-angle handles span 68° of motion via a lever hinge mechanism, allowing the grip angle to adapt through the movement arc. In a biceps curl, the forearm naturally supinates as the arm flexes — moving from a more neutral wrist at the start to a more supinated palm-up position at peak contraction. In a triceps overhead extension, the wrist needs to remain comfortable through the overhead starting position and the full extension. A fixed handle forces the wrist to hold a single grip angle through both of these naturally rotating movements, which creates joint torque. The 68° adapting handle reduces this torque by following the forearm's natural rotation rather than opposing it.

Q: How does the 2+3 arm adjustment system work?
A: The arm position changes via the change rack mechanism, which has five total settings split across two exercise modes — 2 dedicated to biceps curl alignment and 3 dedicated to triceps extension alignment. Each setting changes the position of the pivot relative to the arm pad, effectively moving the mechanical pivot to align with elbow joints of different forearm lengths. For the biceps curl, a shorter forearm needs a closer pivot setting; for the triceps extension, the three positions cover the range of arm lengths that need the overhead extension pivot to sit at the correct elbow joint centre. The triceps mode has an additional position because the overhead arm orientation creates more forearm length variation across user heights than the curl orientation does.

Q: Why is the seated chest-pad position important for triceps development?
A: The seated overhead triceps extension from a chest-supported position loads the triceps long head at its maximum stretch — the overhead arm position places the long head at the greatest length relative to both the shoulder and elbow joints simultaneously. The chest and arm pad prevent the shoulder from dropping forward during the extension, which would reduce the overhead stretch and shift the stimulus away from the long head. Without pad support, overhead triceps extensions require the shoulder stabilisers to maintain the overhead position throughout, which limits the load that can be used before the shoulder rather than the triceps becomes the limiting factor. The pad removes this constraint.

Q: What Dynasty Fitness machines pair with the DRE8044 for a complete arm training area?
A: The DRE8044 covers seated chest-pad-supported bilateral biceps curls and triceps extensions. Pair it with the ISO-Lateral Seated Biceps Curl DRE8031 for ISO-lateral unilateral seated curl training with 360° rotating adaptive handles — each machine covers seated biceps training from a different mechanical architecture. The Standing Total Arms DRE8041 adds standing bilateral curl and extension with cam resistance as the functional standing complement to the DRE8044's supported seated isolation. The Biceps Curl DRE8006 adds standing preacher-style dual-grip biceps curl and the Seated Dips Press DRE8007 adds loaded dip pressing for triceps volume alongside the extension work of the DRE8044.

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The Dynasty Resistance Elite is Dynasty Fitness's flagship selectorized series, built around the Dynasty Flex-Stack System that delivers a true 1:1 felt weight ratio across the majority of the lineup. What you select on the stack is exactly what you lift, giving every session accurate, progressive resistance from the first rep to the last.

The series covers the complete commercial training floor. ISO-lateral pressing and pulling machines including the ISO-Lateral Chest Press, ISO-Lateral Shoulder Press, and ISO-Lateral Seated Row train each side of the body independently through its own natural arc, eliminating the compensation that fixed bilateral machines allow. Dedicated lower body stations including the Leg Press/Hack Squat, Leg Curl/Leg Extension and Glute Drive cover compound and isolation lower body training from selectorized stations built for heavy daily volume. A complete cable training ecosystem spans from the Adjustable Cable Crossover and Dual Adjustable Pulley through to the 4-Stack, 5-Stack, and 8-Stack Multi Station systems for facilities that need multiple concurrent training zones.

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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.