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BLK BOXSKU: 16-1524
New

Back Extension

£850.00
  • Shipped by 13th June

Develop lower back, glute, hamstring, and core strength with the BLK BOX Back Extension. Featuring a saw tooth adjustment system with nine height settings, dense padding for comfort, and extra-long non-slip foot pads for stability, it's built to deliver reliable performance in demanding commercial training environments.

Specifications
Length

Assembled: 1270mm

Packaged: 1100mm

Width

Assembled: 940mm

Packaged: 760mm

Height

Assembled: 810mm - 990mm

Packaged: 780mm

Weight

56kg

Materials and finish

Powder coated steel

Dense foam pads

Plastic fasteners on handles and feet

Textured vinyl upholstery



Colours available

Black

Hardware

M8 & M10

Delivery

We ship our orders via Parcel or Pallet depending on the size of your order and shipping fees will be calculated at checkout.

To track your order click here for orders placed online; Track an Online Order and here for orders placed via our Sales team; Track an Offline Order.

We understand at times due to size, colour or type some items might not be the right fit for you. We are happy to accept a returned item within 30 days from the date of you receiving the item for a refund or exchange.

To start a return click here; BLK BOX Returns

Finance Options

3 interest-free payments of £283.33
4 interest-free payments of £212.50
4 payments of £212.50 with PayPal

Installation Guide

Installation Guides

Back Extension
Back Extension11.63mbDownload
  • Easy-Clean Upholstery Easy-Clean Upholstery
  • High Density Foam High Density Foam
  • 9 Position Adjustable Setup 9 Position Adjustable Setup
  • Space-Saving Design Space-Saving Design

  • Express Shipping

    on all orders

  • 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 BLK BOX Back Extension provides a simple yet effective way to develop lower back, glute, hamstring, and core strength.

Downward-extending support pads create a secure training position, helping users maintain stability and focus on quality movement throughout every repetition. Dense padding offers lasting comfort and support, making it suitable for both high-volume gym environments and performance-focused training programmes.

Smooth handles with rubber end caps provide a confident grip when mounting and dismounting the machine, while also offering additional support during sets. The saw tooth adjustment system features nine height settings, allowing users to make quick, intuitive adjustments without removing pull pins, reducing downtime between athletes and members.

Extra-long non-slip foot pads deliver a stable foundation for users of varying heights, promoting confidence and control throughout the movement. Rubber fasteners on the feet help keep the unit firmly in place, enhancing stability and protecting flooring in busy training environments.

Built to withstand the demands of daily use, the BLK BOX Back Extension is a versatile addition to any strength area. 

Features of the Back Extension

  • Saw Tooth Height Adjustment System

    The intuitive saw tooth adjustment mechanism offers nine height settings, allowing users to quickly achieve the correct training position. The pin-free design enables fast adjustments between users, making it ideal for busy training environments.

  • Extra-Long Non-Slip Foot Pads

    Designed to accommodate users of varying heights, the extended foot platform provides a secure and stable base throughout every repetition. The non-slip surface enhances confidence and control during training.

  • Dense Padding & Supportive Design

    High-density support pads deliver lasting comfort while helping users maintain proper positioning during exercise. The downward-extending pad design promotes stability and encourages effective movement patterns for lower back, glute, hamstring, and core development.

Frequently Asked Questions

Does the Back Extension require assembly?

Yes, the Back Extension requires assembly. A step-by-step install guide is provided here and a user manual is provided here.

What muscles does the Back Extension work?

The back extension is a posterior chain workout machine with emphasis on the lower back, glutes and hamstrings.

How do you use a back extension machine correctly?

Position your hips against the pad, secure your feet, and maintain a neutral spine. Lower your torso under control before raising it by driving through the glutes and hamstrings. Avoid excessive arching at the top of the movement.

Is the back extension machine good for lower back strength?

Yes. The back extension machine specifically targets the lower back muscles, helping to build strength, endurance, and resilience in this often-overlooked area.