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BLK BOXSKU: 16-1540

Pin Loaded Leg Extension

£3,400.00
  • Shipped by 4th August

Strengthen and isolate the quadriceps with smooth, controlled resistance using the Selectorised Leg Extension. Featuring a 133.5kg weight stack, multiple adjustment points, and ergonomic pull-pin controls, it provides a comfortable, customisable fit for users of all sizes.

Specifications
Length

Assembled: 1290mm

Packaged: 1580mm

Width

Assembled: 940mm

Packaged: 1190mm

Height

Assembled: 1525mm

Packaged: 370mm

Weight

260kg

Materials and finish

Powder coated steel

Textured vinyl upholstery

Plastic feet caps

Hardware

M6, M8, M10

Colours available

Black

Delivery

Ships in 2 Working Days

  • Orders up to £50.00 — £4.99
  • Orders £50.01–£150.00 — £9.99
  • Orders £150.01–£349.99 — £19.99
  • Orders £350.00–£499.99 — £39.99
  • Orders £500.00 and over — Free

Finance

3 interest-free payments of £1,133.33
4 interest-free payments of £850.00
4 payments of £850.00 with PayPal

Install Guide

Installation Guides

Pin Select Leg Extension/Curl
Pin Select Leg Extension/Curl13.95mbDownload
  • 133.5kg Weight Stack 133.5kg Weight Stack
  • Multi-Point User Adjustability Multi-Point User Adjustability
  • Easy-Clean Upholstery Easy-Clean Upholstery
  • High Density Foam High Density Foam

  • Free Shipping

    on orders over £500

  • Interest-Free Finance Options

    Available on all orders

  • Lifetime Structural Warranty

    on all BLK BOX Equipment

  • Over 300,000 Clients

    Including 90% of Premier League teams

The Details

The Selectorised Leg Extension is engineered to isolate and strengthen the quadriceps with smooth, controlled resistance and user-friendly adjustability. Designed for commercial gyms, performance facilities, rehabilitation clinics and strength training environments, it delivers consistent biomechanics for athletes of all abilities.

Featuring a 133.5 kg weight stack with a 7.5 kg top plate and 14 x 9 kg weight plates, users can make precise resistance adjustments to suit everything from rehabilitation protocols to heavy strength work. Every adjustment is secured using intuitive pull-pin locking systems, making setup quick, safe and reliable between users.

With 6 work arm positions, 7 ankle pad positions, and 6 seat positions, the machine accommodates a wide range of body sizes while allowing users to achieve optimal alignment for effective, comfortable training. The adjustable design promotes correct movement mechanics throughout the full range of motion, helping maximise quadriceps activation while reducing unnecessary joint stress.

Frequently Asked Questions

Does the Leg Extension require assembly?

Yes, a step-by-step guide can be found here.

Do the handles move?

No, the handles are fixed to support the user during the exercise and entering and exiting the machine.

What is the maximum weight on the Selectorised Leg Extension?

The machine includes a 133.5 kg selectorised weight stack, consisting of a 7.5 kg top plate and 14 x 9 kg weight plates, providing a wide range of resistance for beginners through to advanced athletes.

Is a selectorised leg extension suitable for rehabilitation?

Yes. A selectorised leg extension is commonly used in physiotherapy and rehabilitation settings because it allows controlled, progressive loading of the quadriceps. Users should always follow guidance from a qualified healthcare professional when recovering from injury.