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Leg Extension
Steel Series

Leg Extension

The Leg Extension from the STEEL series is a machine for isolated quadriceps training. The user sits with back support and lifts the roller in front with the legs until the knees are straight. It is one of the basic leg machines in every gym.

Frame colour
Black · matte · single colour
Paint
Finish *
Upholstery & logo
Smooth leatherette · embroidered logo

Nothing has to be selected — click an option again to clear it and we will recommend one. This choice applies to every machine in your request by default; mixing colours within one set is arranged individually. Any RAL shade on request, photos show the standard black frame.

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Made to order · lead time 8–10 weeks · lifetime frame warranty

Training & technical data

Specification
Standard stack weight100 kg
Optional stack weight140 kg
Dimensions when folded1332 x 1053 x 1660 mm
Net weight220 kg
Catalogue numberSD37
CategoryStrength
Frame colour & upholstery

Single or dual-colour frames at no surcharge, any RAL on request. Four leather textures, 10+ shades each, logo embroidery free of charge.

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About this machine

The Leg Extension from the STEEL series is a machine for isolated quadriceps training. The user sits with back support and lifts the roller in front with the legs until the knees are straight. It is one of the basic leg machines in every gym.

Why choose the Leg Extension

Quad isolation: the front of the thigh works without help from the glutes.

Adjustable back pad: aligns the knee exactly with the pivot point of the arm.

Adjustable roller: ankle support for users of different heights.

100 kg weight stack: as standard, optionally up to 140 kg.

Custom colours: a one- or two-colour frame and upholstery matched to your gym.

Who the Leg Extension is for

Beginners and advanced lifters who want stronger, more defined thighs will value it. It is also often used in knee rehabilitation under professional supervision, because the load can be set very precisely.

Frequently asked questions

Which muscles does it work?

The quadriceps: the rectus femoris and the three vastus muscles.

What are the dimensions?

1332 × 1053 × 1660 mm, with a net weight of 220 kg.

Steel is our most versatile line: timeless geometry, simple operation and workshop-grade durability that tolerates inexperienced users.

Every unit is made to order in our own workshop — welding, powder coating and upholstery included. Choose the frame colour and finish, add your logo, and we deliver, assemble and set the machine up on site. Spare parts stay in stock, so a gym can be serviced and expanded years later.

Where it fits
Boutique studios
Corporate gyms
Circuit training
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