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BLK BOXSKU: 22-0620

3 Series Nexus Upgrade Kit - Full Rack

£2,150.00
Colour: Signature Black
Height
Alignment
  • Ready to ship early November

Enhance your Rigs and Racks with a range of attachments.

Delivery

Ships in 5 Weeks

  • 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 £716.66
4 interest-free payments of £537.50
4 payments of £537.50 with PayPal

Suitability

This product is designed for PT studios and light-commercial facilities looking to invest in a modular system that can be expanded and adapted over time.
  • Precision Engineered Precision Engineered
  • Enhanced Versatility Enhanced Versatility
  • Functional Design Functional Design
  • Maximise Potential Maximise Potential

  • 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

NEXUS is the ultimate fusion of strength and functional fitness. Combining cable-based resistance with free-weight functionality, it delivers seamless transitions between training styles - maximising efficiency and unlocking unlimited workout potential in one space-saving system.

The NEXUS upgrade kit is available for 3 and 5 Series racks, the modular expansion kit gives you the opportunity to add the additional cable functionality in Nexus to your racks.

Our standard stack weight is 120kg, please contact us for enquiries about a 150kg option.

Comparing the range

This kit retrofits cable columns to a full-depth rack you already own — the lower-cost route to functional training when the frame is sound and replacing it is not worth it. For a compact frame, the Nexus Upgrade Kit for compact racks is the matching version. Check your uprights before ordering: this fits 3 Series 70x70x3mm frames, while the 5 Series Nexus Upgrade Kit fits 80x80x3mm.

Buying new instead of upgrading? The 3 Series Nexus Full Rack arrives with cable columns already integrated. Browse the Nexus functional trainer range, or see squat rack attachments for other ways to extend an existing rack.

Please note: This product is delivered flat-packed and requires assembly.

Features of the 3 Series Nexus Upgrade Kit - Full Rack

  • Double Wall Ball Target - BLK BOX

    Unique add ons

    Enhance your training space with custom-built add on's, including branded wall ball targets, monkey boards, and modular attachments. These additions elevate training variety while providing a memorable, high-performance experience for athletes.

  • In-house manufacturing

    By manufacturing in-house, we reduce lead times, ensure quality control, and minimise environmental impact by cutting down on transportation.

  • BLK BOX Shield

    Rig and Rack attachments are finished in our premium powder coating system designed for maximum durability, superior grip, and long-lasting protection.

Frequently Asked Questions

What makes the 3 Series different from the 1 or 5 Series?

The 3 Series offers a modular, future-proof design using 70x70x3mm steel. It includes 4-way numbered hole spacing and a broader range of colour and branding options than the 1 Series, while remaining more accessible than the elite-level 5 Series.

What are the height options for the 3 Series racks?

Racks are available in 2.2m or 2.4m heights to suit different ceiling clearances and facility needs. Taller options (up to 3.6m) are also available for rig setups.

Can I integrate cables and storage into the 3 Series?

Yes - the 3 Series supports integrated cable columns and multiple storage attachments. It’s designed to reduce footprint while enhancing training versatility.

Is the 3 Series available in different colours?

Absolutely. The 3 Series comes in 14 standard colours with optional branding upgrades, including custom brand plates and stack guards.

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