Exercises and muscles targeted

Exercise	Muscles Targeted
Seated Leg Curl (bilateral)	Biceps Femoris — Long and Short Heads (primary), Semimembranosus (primary), Semitendinosus (primary), Gastrocnemius (secondary — plantarflexion component at ankle contact), Popliteus (secondary at full flexion)
Seated Leg Curl — Isometric Hold (peak)	Biceps Femoris, Semimembranosus, Semitendinosus (sustained isometric at maximum knee flexion — peak hamstring contraction and tendon loading), Gastrocnemius (co-contraction), Popliteus (sustained)
Seated Leg Curl — Slow Eccentric	Biceps Femoris Long Head, Semimembranosus, Semitendinosus (eccentric lengthening through full extension — maximum hamstring hypertrophy stimulus), Gastrocnemius (eccentric stabiliser), Dynasty Flex-Stack 1:1 ratio maintains consistent resistance through full eccentric return
Seated Leg Curl — Partial ROM (peak arc)	Biceps Femoris, Semimembranosus (sustained time under tension in the upper flexion arc — peak contraction emphasis), used for post-failure burnout sets and terminal knee flexion strength development
Seated Leg Curl — Backrest Adjusted (varied hip angle)	Hamstrings — all three heads (hip angle changes shift relative hamstring length — more reclined backrest increases hip flexion which lengthens the hamstrings at the hip and increases stretch-loaded activation), Gastrocnemius (secondary varies with backrest position)
Seated Leg Curl — Drop Set	Biceps Femoris, Semimembranosus, Semitendinosus (extended time under tension through stack weight reductions — selectorized stack enables instant drops without repositioning), Gastrocnemius (sustained secondary through all drop set phases)

The seated leg curl trains the hamstrings through knee flexion with the hip in a partially flexed position determined by the backrest angle. Changing the backrest position on the DRE8013 changes the hip angle, which changes the effective length of the bi-articular hamstring muscles at the hip end before the curl begins. A more reclined backrest increases hip flexion and increases the hamstring stretch at the hip, producing a longer effective training range and a stronger stretch-loaded eccentric stimulus. The 8-position backrest on the DRE8013 makes this a programmable variable rather than a fixed geometric limitation, allowing the same machine to deliver different hamstring training stimuli based on the session's goal.

Who this machine is built for

Serious Home Gym Builders
You need a dedicated seated hamstring curl machine that fits users of different heights without requiring a separate machine for each proportion. The DRE8013's three-system adjustment architecture — 8-position backrest, 5-position leg pad, and multi-position adjustment disc — covers every realistic user configuration from one station at 68"×48", with a 210 lb stack and the Dynasty Flex-Stack System's 1:1 felt weight ratio. The split seat pad's knee joint support detail makes heavy curl sessions genuinely comfortable rather than cut short by pressure under the knee.

Bodybuilders and Physique Athletes
Hamstring fullness and the biceps femoris sweep visible from the rear in competition are built through knee flexion under progressive loading in the seated position, and the backrest angle on the DRE8013 is the variable that determines how much of that training stimulus comes from the stretch-loaded starting position versus the peak contracted finishing position. A more reclined backrest increases hip flexion and hamstring stretch — emphasising the eccentric hypertrophy stimulus. A more upright backrest reduces stretch and emphasises peak contraction work. The 8-position range gives a bodybuilder meaningful control over this variable across different phases of a training cycle.

Commercial Gym Owners and Operators
At 646 lbs before the stack the DRE8013 stays planted on the commercial floor without anchoring. The quick-adjust seat handle for backrest changes without dismounting means the station turns over between users faster than machines requiring the user to stand up and readjust before sitting again. The biomechanically tested pivot point and three-system adjustment architecture serve the full range of the commercial membership from shorter to taller users and from beginners learning the movement to advanced athletes training to failure on heavy curl sets.

Powerlifters and Strength Athletes
Seated leg curl volume as a deadlift accessory builds knee flexion hamstring strength that the hip extension dominant pattern of the deadlift develops incompletely at equivalent load and specificity. The DRE8013's 1:1 felt weight ratio makes accessory load tracking accurate alongside competition programming, and the biomechanically tested pivot reduces the joint shear that makes heavy selectorized curl work uncomfortable on machines with approximated pivot geometry. The slow eccentric variation at the Dynasty Flex-Stack's consistent resistance is the most productive hamstring hypertrophy technique for accessory training volume.

University and College Athletic Departments
Hamstring strength through knee flexion is a direct injury prevention target in sprint-based and kicking sports where hamstring strains are a high-frequency injury. The DRE8013's biomechanically tested pivot and three-system adjustment system accommodate the full range of athlete heights and proportions across a team roster, and the selectorized stack enables precise load tracking and progression across a training block. The backrest angle variable also allows S&C coaches to shift between stretch-emphasis and peak-contraction-emphasis curl sessions within the same machine.

Physical Therapists and Sports Medicine Practitioners
Seated leg curl in a machine-guided environment with a biomechanically tested pivot is a standard component of hamstring injury rehabilitation protocols. The pivot alignment reduces joint shear forces that create knee discomfort during early loading stages, and the 5-position leg pad and multi-position adjustment disc allow the contact point to be set so there is no pressure at the back of the knee that would compromise tissue healing. The 8-position backrest allows hip angle to be managed precisely for each stage of the rehabilitation programme. 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 DRE8013 Seated Leg Curl

Select the working weight on the stack using the selector pin. The Dynasty Flex-Stack System delivers a true 1:1 felt weight ratio throughout the curl arc. Start conservatively for the first session to establish the correct three-system fit before increasing load.
Set the backrest to one of eight positions using the quick-adjust seat handle. A more reclined position increases hip flexion, which lengthens the hamstrings at the hip and increases the stretch-loaded stimulus through the curl. A more upright position reduces hip flexion and emphasises peak contraction work at the top of the curl arc. Start at the mid-range position and adjust across sessions based on training goal.
Adjust the leg pad to one of five positions so it contacts the shin just above the ankle without pressing on the Achilles tendon or calf. The correct contact point keeps the resistance line aligned through the lower leg during the full curl arc.
Set the multi-position adjustment disc to the position that aligns the machine's pivot with your knee joint centre. The biomechanically tested pivot geometry produces a correct curl arc when the adjustment disc is set to the position where the knee tracks naturally without lateral drift during the curl.
Sit on the split seat pad with the back against the backrest. The thickened front section of the seat should support the back of the thighs just above the knee — confirm this contact feels even and comfortable across both legs before loading.
Grip both side handles firmly. The abdominal pad provides additional body stability — confirm it contacts the lower torso comfortably before beginning the first rep.

Performing the Exercise

From the starting position with both legs extended and the hamstrings at full stretch against the ankle pad resistance, curl both legs simultaneously toward the seat by contracting the hamstrings and driving the ankle pad upward through the arc.
Keep the hips pressed against the seat throughout the curl. If the hips lift during the concentric phase the hip flexors are compensating for hamstring fatigue — reduce the load and reconfirm the seat pad contact before continuing.
Curl to full knee flexion at the peak where the hamstrings reach their strongest contraction, holding for one to two seconds before beginning the return.
Lower under control over at least two to three seconds, allowing the hamstrings to lengthen through the full eccentric return to the starting extended position. The Dynasty Flex-Stack 1:1 ratio delivers consistent resistance through this lowering phase, which carries the largest hypertrophy stimulus for the hamstrings.
For backrest adjustment between sets during giant set training, use the quick-adjust seat handle to change the backrest position without leaving the seat, then begin the next set immediately.
After the final rep, allow the ankle pad to return fully to the starting position before releasing the handles and standing.

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.

Save 10%

Seated Leg Curl DRE8013

$2,649.00

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

Commercial Grade
Pay With HFA/FSA

Free Shipping

Weight Stack: 210lb

210lb 250lb

!!IMPORTANT!! 250lb upgrade is going to be ready by late April/beginning of May

The Dynasty Fitness DRE8013 Seated Leg Curl is a selectorized hamstring machine engineered through extensive data sampling and biomechanical testing to place the pivot point at the precise position that aligns with the knee joint's natural movement axis, so the curl arc follows the actual path the knee takes through flexion rather than approximating it with a fixed geometry that creates joint stress at heavier loads. The three-system adjustment architecture of 8-position backrest, 5-position leg pad, and multi-position adjustment disc covers the full range of user body proportions to deliver a custom-fit curl position for every user, and a quick-adjust seat handle allows backrest changes without dismounting so training momentum is never broken between sets. A split two-section seat pad with a thickened front section elevated above the rear provides stable knee joint support at the point where the seat meets the leg, reducing the pressure and instability that flat seats create at the back of the knee under heavy curl loads. The Dynasty Flex-Stack System delivers a true 1:1 felt weight ratio throughout the hamstring curl arc. Built to commercial grade at 68"×48"×63" with a 210 lb standard stack and a 250 lb upgrade option available through Dynasty Fitness, the DRE8013 is built for commercial gyms, personal training studios, and serious home gym setups where biomechanically precise selectorized seated hamstring training is a posterior chain programming priority.

Pivot point position determined through extensive data sampling and biomechanical testing to align precisely with the knee joint's natural movement axis, producing a mechanically correct curl arc that reduces joint shear forces and maximises hamstring activation through every degree of the seated curl
Three-system adjustment architecture — 8-position backrest, 5-position leg pad, and multi-position adjustment disc — fits every user body type precisely for a custom-configured seated curl position that no single-axis adjustment system can replicate
Quick-adjust seat handle allows backrest changes without dismounting, keeping training momentum unbroken between giant sets and maintaining session flow during high-volume hamstring programming
Split two-section seat pad with a thickened front section elevated above the rear provides dedicated knee joint support at the seat edge where standard flat seats create pressure and instability under heavy curl loads, allowing the hamstrings to reach failure before discomfort interrupts the set

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Exercises and muscles targeted

Exercise	Muscles Targeted
Seated Leg Curl (bilateral)	Biceps Femoris — Long and Short Heads (primary), Semimembranosus (primary), Semitendinosus (primary), Gastrocnemius (secondary — plantarflexion component at ankle contact), Popliteus (secondary at full flexion)
Seated Leg Curl — Isometric Hold (peak)	Biceps Femoris, Semimembranosus, Semitendinosus (sustained isometric at maximum knee flexion — peak hamstring contraction and tendon loading), Gastrocnemius (co-contraction), Popliteus (sustained)
Seated Leg Curl — Slow Eccentric	Biceps Femoris Long Head, Semimembranosus, Semitendinosus (eccentric lengthening through full extension — maximum hamstring hypertrophy stimulus), Gastrocnemius (eccentric stabiliser), Dynasty Flex-Stack 1:1 ratio maintains consistent resistance through full eccentric return
Seated Leg Curl — Partial ROM (peak arc)	Biceps Femoris, Semimembranosus (sustained time under tension in the upper flexion arc — peak contraction emphasis), used for post-failure burnout sets and terminal knee flexion strength development
Seated Leg Curl — Backrest Adjusted (varied hip angle)	Hamstrings — all three heads (hip angle changes shift relative hamstring length — more reclined backrest increases hip flexion which lengthens the hamstrings at the hip and increases stretch-loaded activation), Gastrocnemius (secondary varies with backrest position)
Seated Leg Curl — Drop Set	Biceps Femoris, Semimembranosus, Semitendinosus (extended time under tension through stack weight reductions — selectorized stack enables instant drops without repositioning), Gastrocnemius (sustained secondary through all drop set phases)

Who this machine is built for

How to setup and use

Setting Up the DRE8013 Seated Leg Curl

Select the working weight on the stack using the selector pin. The Dynasty Flex-Stack System delivers a true 1:1 felt weight ratio throughout the curl arc. Start conservatively for the first session to establish the correct three-system fit before increasing load.
Set the backrest to one of eight positions using the quick-adjust seat handle. A more reclined position increases hip flexion, which lengthens the hamstrings at the hip and increases the stretch-loaded stimulus through the curl. A more upright position reduces hip flexion and emphasises peak contraction work at the top of the curl arc. Start at the mid-range position and adjust across sessions based on training goal.
Adjust the leg pad to one of five positions so it contacts the shin just above the ankle without pressing on the Achilles tendon or calf. The correct contact point keeps the resistance line aligned through the lower leg during the full curl arc.
Set the multi-position adjustment disc to the position that aligns the machine's pivot with your knee joint centre. The biomechanically tested pivot geometry produces a correct curl arc when the adjustment disc is set to the position where the knee tracks naturally without lateral drift during the curl.
Sit on the split seat pad with the back against the backrest. The thickened front section of the seat should support the back of the thighs just above the knee — confirm this contact feels even and comfortable across both legs before loading.
Grip both side handles firmly. The abdominal pad provides additional body stability — confirm it contacts the lower torso comfortably before beginning the first rep.

Performing the Exercise

From the starting position with both legs extended and the hamstrings at full stretch against the ankle pad resistance, curl both legs simultaneously toward the seat by contracting the hamstrings and driving the ankle pad upward through the arc.
Keep the hips pressed against the seat throughout the curl. If the hips lift during the concentric phase the hip flexors are compensating for hamstring fatigue — reduce the load and reconfirm the seat pad contact before continuing.
Curl to full knee flexion at the peak where the hamstrings reach their strongest contraction, holding for one to two seconds before beginning the return.
Lower under control over at least two to three seconds, allowing the hamstrings to lengthen through the full eccentric return to the starting extended position. The Dynasty Flex-Stack 1:1 ratio delivers consistent resistance through this lowering phase, which carries the largest hypertrophy stimulus for the hamstrings.
For backrest adjustment between sets during giant set training, use the quick-adjust seat handle to change the backrest position without leaving the seat, then begin the next set immediately.
After the final rep, allow the ankle pad to return fully to the starting position before releasing the handles and standing.

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 Leg Curl DRE8013

$2,649.00

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

Key Features

Biomechanically Tested Pivot Point

The knee joint pivot on the DRE8013 was determined through extensive data sampling and biomechanical testing rather than from a standard industry pivot convention. The testing identified the optimal pivot position that aligns with the knee joint's natural movement axis through the full seated curl arc, which keeps the resistance direction correct relative to the hamstring's pull direction at every degree of knee flexion. A pivot that does not align with the knee's actual movement axis creates a shifting load path that the joint structures compensate for across every rep, reducing training efficiency and increasing joint stress at heavier loads. The tested pivot position eliminates this misalignment for every user across the range of body proportions the three-system adjustment accommodates.

Three-System Adjustment Architecture

The 8-position backrest, 5-position leg pad, and multi-position adjustment disc operate as three independent adjustment axes that together configure the machine precisely for each user's body proportions. Most selectorized leg curl machines provide one or two adjustment axes. The three-system approach on the DRE8013 allows the backrest to set the hip angle and hamstring starting length, the leg pad to position the contact point correctly for the lower leg length, and the adjustment disc to align the pivot with the knee joint centre independently — so each variable is set correctly without compromising the others. This is the mechanical basis for the custom-fit training sensation the machine delivers across users of different heights, leg proportions, and flexibility levels.

Quick-Adjust Seat Handle

The backrest adjustment operates through a handle accessible from the seated position, allowing the backrest position to be changed without dismounting between sets. This is the practical feature that makes giant set training and backrest angle variation within a session possible — both of which require multiple backrest changes per session. A machine that requires standing up, manually repositioning the backrest, and sitting down again between each angle change makes this programming style impractical in a real session. The quick-adjust handle reduces the backrest change to a seconds-long operation from the seated training position.

Split Two-Section Seat Pad

The seat pad is designed as two sections — a thickened front section that is slightly elevated above the rear section. The thickened front supports the back of the thighs just above the knee joint during the curl, which prevents the hamstrings from pressing against a seat edge that would create a pressure point at the popliteal area under heavy loads. A flat seat concentrates the contact force at the back of the knee precisely where the tendons and popliteal vessels run, which limits how long a set can continue before discomfort becomes the limiting factor rather than the hamstrings. The elevated thickened front section distributes the leg contact force across the back of the thigh rather than at the knee.

Dynasty Flex-Stack System

The DRE8013 runs on the Dynasty Flex-Stack System, delivering a true 1:1 felt weight ratio throughout the seated hamstring curl arc. The resistance is consistent from the full stretch starting position through to peak knee flexion and back down through the eccentric return. This matters specifically at the fully extended starting position where the hamstrings are most lengthened and where the eccentric hypertrophy stimulus is greatest — a cam-based machine that reduces felt weight at the stretch position underserves the most productive part of the movement for hamstring mass development.

Abdominal Pad and Body Stability

An abdominal pad provides a forward contact point for the lower torso during the curl, working alongside the backrest and seat pad to anchor the body in a stable three-point position throughout the set. When the body is anchored at the back, seat, and front simultaneously, the hips cannot lift during the curl drive — the compensation pattern where the hip flexors take over as the hamstrings fatigue. The abdominal pad converts this compensation pattern from a posture-dependent technique cue into a mechanical constraint, so the hamstrings carry the full curl stimulus regardless of load or fatigue level.

Product Information
Product Name	Seated Leg Curl
Model	DRE8013
Series	DRE80 Selectorized Series
Product Type	Selectorized Seated Leg Curl Machine
Function	Seated hamstring curl — bilateral knee flexion
Target Muscles	Biceps Femoris, Semimembranosus, Semitendinosus (primary), Gastrocnemius (secondary)
Resistance System	Dynasty Flex-Stack System — 1:1 felt weight ratio
Pivot Development	Extensive data sampling and biomechanical testing — aligned with knee joint movement axis
Grade	Commercial
Colour	Black
Dimensions and Weight
Length	68 in (172.8 cm)
Width	48 in (121.1 cm)
Height	63 in (160.2 cm)
Net Weight	646 lbs (293 kg)
Weight Stack
Standard Weight Stack	210 lbs
Upgraded Weight Stack	250 lbs — contact Dynasty Fitness
Adjustability
Backrest Positions	8 positions — quick-adjust handle, changes without dismounting
Leg Pad Positions	5 positions
Adjustment Disc	Multi-position — pivot alignment adjustment
Foundation Feet	3 x adjustable levelling feet
Pads and Body Support
Seat Design	Split two-section — thickened front elevated above rear for knee joint support
Abdominal Pad	Front torso anchor — prevents hip lift under heavy curl loads
Bearings	6005-2Z x6
Pulleys	4.5" pulley x2, 3.5" pulley x1
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

Q: How does the biomechanically tested pivot improve the seated leg curl compared to a standard machine?
A: The pivot on the DRE8013 was positioned through extensive data sampling and biomechanical testing to align with the knee joint's natural movement axis through the full seated curl arc. A pivot that is positioned by convention rather than testing produces an arc that diverges from the knee's actual path at some point — typically at the extremes of the flexion range — which creates joint shear forces that the knee structures compensate for rather than the hamstrings working cleanly through the full range. The tested pivot alignment keeps the resistance direction consistent with the hamstring's pull direction at every degree of knee flexion, which reduces joint stress and maximises the hamstring activation per rep at any working weight.

Q: What does the 8-position backrest change about the exercise?
A: The backrest position changes the hip angle, which directly changes the starting length of the hamstrings before the curl begins. The hamstrings are bi-articular muscles that cross both the hip and the knee. A more reclined backrest increases the hip flexion angle, which lengthens the hamstrings at the hip end before the knee flexion starts — producing a longer effective training range and a stronger stretch-loaded eccentric stimulus at the bottom of the curl. A more upright backrest reduces hip flexion and shortens the hamstrings at the hip, shifting the emphasis toward peak contraction work at the top of the arc. The 8-position range gives these two training stimuli as a programmable variable across different sessions rather than locking the machine to a single hip angle.

Q: How does the split seat pad reduce knee discomfort during heavy sets?
A: The thickened front section of the seat is slightly elevated above the rear section, which means the contact surface at the front of the seat is higher than at the rear. This positions the support surface behind the knee — across the back of the thigh — rather than at the back of the knee itself where the popliteal area, tendons, and vascular structures run. A flat seat creates a pressure point directly at the back of the knee as the leg hangs over the edge, which limits how long a set can continue before this discomfort becomes the limiting factor rather than the hamstrings. The thickened elevated front section resolves this by distributing the contact across the thigh rather than concentrating it at the joint.

Q: Can I change the backrest position mid-session without stopping training?
A: Yes. The quick-adjust seat handle is accessible from the seated training position and allows the backrest to be repositioned without dismounting the machine. This is specifically designed for giant set training where different backrest angles within the same session are programmed to hit the hamstrings through different effective ranges, and for coaches who want to change the backrest angle between clients without the setup delay of a machine that requires the user to stand and manually reposition the backrest before sitting again.

Q: What is the Dynasty Flex-Stack System and why does it matter for a seated leg curl?
A: The Dynasty Flex-Stack System is the internal pulley arrangement that delivers a true 1:1 felt weight ratio throughout the curl arc — the weight selected on the stack is the resistance the hamstrings work against from the fully extended starting position through to peak knee flexion and back. This matters specifically at the fully extended starting position where the hamstrings are at their longest and where the eccentric hypertrophy stimulus from the loaded return is greatest. Machines that reduce felt weight at this position through cam or leverage geometry underserve the most productive part of the movement for hamstring mass development.

Q: What Dynasty Fitness machines pair with the DRE8013 for a complete hamstring and lower body training area?
A: The DRE8013 covers seated hamstring curl for knee flexion hamstring training. Pair it with the Leg Extension DRE8014 for the opposing quad isolation to cover both sides of the knee joint from dedicated machines. The Leg Press/Hack Squat DRE8016 adds bilateral compound lower body pressing for quad and glute development alongside the isolation work. The Multi Back Extension DRE8040 adds posterior chain hip extension work for the glutes and erectors that the leg curl alone does not cover. Together these four machines address the complete lower body and posterior chain from dedicated selectorized stations for each movement pattern.

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Every machine that leaves Dynasty Fitness carries the same promise: it is built to the commercial standard that professional training environments demand, priced so that standard is no longer exclusive to them, and backed by the support and warranty coverage that a long-term training investment deserves.

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.