Selektorized
Leg Extension & Curl
Quads and hamstrings in a compact station.
The Lacertosus Selektorized Leg Extension & Curl is designed to train knee extension and flexion in a single professional machine. The dual function lets you work quadriceps and hamstrings with guided motion, intuitive adjustments and selectable load.
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Precise biomechanics
Dedicated extension and flexion movements for controlled work on quads and hamstrings.
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Dual function
Two essential exercises in a single station to optimise space and lower-body coverage.
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Italian design
Clean finishes, orange details and careful padding for professional environments.
The product
Engineered to train the leg in full
The Selektorized Leg Extension & Curl integrates two essential lower-body movements, letting you switch from knee extension to flexion with a practical, professional configuration. The weight-stack system makes progression immediate while the guided structure helps maintain control and stability.
Muscles involved

- Quadriceps
- Hamstrings
Ideal for isolation, reinforcement and control of quads and hamstrings via guided, progressive movements.
Details
Technical specs
- Code
- SKZ-LEC
- Category
- Lower Body
- Model
- Weight stack Leg extension & Curl
- Series
- Selektorized
- Use
- Commercial, Professional
- Class
- S
- Max load
- 134 kg
- Plate weight
- 6.8 kg
- Ratio
- curl 0.5 / extension 0.9
- Max user weight
- 150 kg
- Net weight
- 314.1 kg
- Materials
- Steel, stainless steel, aluminium, various polymers, eco-leather
- Colour
- Black, orange
- Warranty
- 2 years
- Origin
- Designed and engineered in Italy
Footprint
Dimensions engineered for professional environments
With maximum dimensions of 1351 x 1319 x 1563 mm, the Selektorized Leg Extension & Curl is designed to fit into professional weight rooms while balancing accessibility, stability and space optimisation.

- L
- 1351mm
- D
- 1319mm
- H
- 1563mm
The Selektorized pillars
Built to last, designed for those who train.
Designed to fit seamlessly into demanding professional environments, the Selektorized Leg Extension & Curl combines performance, solidity and aesthetic identity in a solution consistent with Lacertosus positioning.
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Complete training
Lets you work both quadriceps and hamstrings with fast transitions between functions.
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Selected load
134 kg weight stack with 6.8 kg plates for simple, precise progressions.
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Dedicated ratios
0.5 ratio in curl and 0.9 in extension for load response matched to each motion.
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Superior comfort
Seat, backrest and padded rollers promote stability, comfort and correct execution.
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Professional safety
Guided motion and intuitive adjustments make the machine suitable for a range of user profiles.
Selectable weight stack.
The 134 kg weight stack enables fast, precise load selection. The 6.8 kg plates allow steady increments, while the curl 0.5 / extension 0.9 transmission ratios guarantee a response consistent with the machine's function.
- Max load: 134 kg
- Single plate weight: 6.8 kg
- Ratio: curl 0.5 / extension 0.9
- Selection: via integrated weight stack
Load selected
11
kg25 LB
Pin
inserted · 11kg
Pull the pin to choose
Construction
High-quality materials and finishes.
- High-strength steel frame for stability and durability in professional environments.
- Stainless steel, aluminium and selected polymer components.
- Eco-leather upholstery designed for comfort, durability and easy cleaning.
- Black finish with distinctive orange details for an elegant, recognisable visual identity.
- Carefully engineered for reliability, operational continuity and efficient maintenance.

Use targets
Ideal for.
- Commercial gyms
- Personal trainer studios
- Sports centres
- Hotels & resorts
- Corporate wellness
- High-traffic professional facilities
Dedicated consultation
Not sure it's the right model? Talk to one of our specialists.
Full service
Everything included, always by your side.
From order to first workout, every Selektorized machine comes with a dedicated service.
2 years warranty
General 2 years coverage to ensure safety, continuity and protection of your investment.
Professional installation
Assembly, positioning and commissioning carried out with attention to proper configuration of the equipment.
After-sales service
Dedicated technical support to ensure efficiency, uptime and fast intervention.
Spare parts available
Components and spare parts available to reduce machine downtime and maintain high service continuity.