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Located at 214 Lincoln Blvd Unit A, Venice, CA

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Leg Curl Leg Extension DRE8025 3D View

Leg Curl/Leg Extension DRE8025

Regular price $2,649.00
Sale price $2,649.00 Regular price $2,949.00 10% off (Save$300.00 )

Key Features

1.

Dynasty Flex-Stack System

The DRE8025 runs on the Dynasty Flex-Stack System, an internal pulley design developed to deliver a true 1:1 felt weight ratio through both the leg extension and leg curl. Most selectorized leg machines use cam or leverage systems where the felt resistance drops below the selected stack weight at mid-range, which is precisely where the quadriceps and hamstrings are working hardest through their peak strength window. The Dynasty Flex-Stack System uses a precision internal pulley arrangement to offset these losses, so the resistance felt during the set matches the weight selected on the stack throughout the full arc of both exercises. Felt weight may vary slightly based on ankle pad position due to changes in lever arm length, but the 1:1 design eliminates the systematic under-resistance that cam-based alternatives produce.
2.

Biomechanically Tested Pivot Point

The knee joint pivot position on the DRE8025 was determined through extensive data sampling and biomechanical testing rather than from a standard industry pivot convention. The pivot point is positioned to align precisely with the natural movement axis of the knee joint during both extension and flexion, which keeps the resistance arc mechanically correct through the full working range. A pivot point that does not align with the knee's true movement axis creates a shifting load that the joint structures compensate for across every rep, which reduces training efficiency and increases joint stress at heavier loads. The tested pivot eliminates this misalignment for both exercises from the same pivot geometry.
3.

Zero-Slack Resistance Travel Design

The zero-slack system ensures the weight stack engages from the very first millimeter of ankle pad movement at the start of each rep in both the extension and the curl. Many leg machines have cable slack built into the neutral starting position, meaning the first portion of each rep is unloaded and the quads or hamstrings only begin working once the slack is taken up. This dead zone shortens the effective training range and misleads load tracking because the muscle is working against less than the selected weight for the early portion of every rep. The zero-slack design on the DRE8025 means the full selected load is active from rep initiation through to the end of the eccentric return.
4.

Multi-Dimensional Adjustment System

Four separate adjustment axes fit the DRE8025 to each user's proportions for both exercises: 4+3-position knee joint adjustment, 7-position ankle pad, 5-position leg pad, and 8-position backrest. This adjustment density is significantly higher than standard single-function leg machines, which typically provide two to four total adjustment points. The 4+3-position knee joint covers both the extension and curl pivot requirements with different position counts for each exercise, ensuring the pivot alignment is correct for both movements independently. The 7-position ankle pad covers the range of lower leg lengths from shorter to taller users without the ankle pad contacting the joint itself, and the 8-position backrest covers the sitting height variations that determine where the knee falls relative to the machine's pivot during both exercises.
5.

Semi-Circular Leg Pad

The leg pad uses a semi-circular profile that wraps around the back of the upper thigh during the leg curl, maintaining contact across a wider thigh surface area than a flat cylindrical pad. A flat pad makes contact at a single point and can shift or lose contact at the peak of the curl arc when the thigh is most loaded. The semi-circular surface maintains even thigh contact through the full curl, which keeps the force transfer consistent from the first rep to the last. During leg extension, the pad rotates upward and locks in a stored position that clears the shin completely, so there is no pad interference during the extension movement without needing to remove or reattach any component.
6.

Two-Stage Seat Design

The seat combines a thickened front section with a standard rear section, creating a height difference between the front and rear of the seating surface. The thickened front section provides elevated knee joint support that keeps the distal thigh slightly raised relative to the proximal thigh during the exercise. This geometry reduces the tendency for the pelvis to lift off the rear of the seat during the leg extension drive and keeps the knee joint stable at the front edge of the seat where the quad force is transmitted to the ankle pad. A quick-adjust handle allows seat height and position changes between exercises without the user having to dismount, which maintains training flow during superset programming.

Product Information
Product NameLeg Curl/Leg Extension
ModelDRE8025
SeriesDRE80 Selectorized Series
Product TypeSelectorized Dual-Function Leg Curl and Leg Extension Machine
FunctionsSeated leg extension and seated leg curl
Target MusclesQuadriceps — all four heads (extension), Hamstrings — Biceps Femoris, Semimembranosus, Semitendinosus (curl)
Resistance SystemDynasty Flex-Stack System — 1:1 felt weight ratio
Resistance EngagementZero-slack resistance travel design — immediate from first millimeter of movement
GradeCommercial
ColourBlack
Dimensions and Weight
Length60.3 in (153.0 cm)
Width46.0 in (117.0 cm)
Height63.1 in (160.2 cm)
Net Weight571 lbs (259 kg)
Weight Stack
Standard Weight Stack210 lbs
Upgraded Weight Stack250 lbs — contact Dynasty Fitness
Adjustability
Knee Joint Adjustment4+3 positions — 4 for leg extension, 3 for leg curl
Ankle Pad Positions7 positions
Leg Pad Positions5 positions — semi-circular profile, rotates to storage for extension
Backrest Positions8 positions
Seat DesignTwo-stage — thickened front section for knee joint support
Adjustment AccessQuick-adjust handle — changes without dismounting
Mechanism and Pulleys
Pulleys4.5" pulley x4, 3.5" pulley x1, V-pulley x1
Bearings6005-2Z x8
Frame and Construction
Main Frame Tubing1.97"×5.9"×0.1" rectangular steel
Movement Arm TubingΦ2.4"×0.1"
Indoor Use OnlyYes

The Dynasty Fitness
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OUR COMMITMENT

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.

214 Lincoln Blvd Unit A, Venice, CA

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