High-Performance Steel Tube for Roll Cages, Chassis and Motorsport Fabrication

ProFormance Metals is a specialist stockholder of roll cage tubing and high-performance steel for motorsport applications. We supply a comprehensive range of steel grades and tube sizes to support the manufacture of roll cages, safety cells, spaceframe chassis and other engineered motorsport components.

Our range serves professional race teams, specialist fabricators, vehicle manufacturers, engineering businesses, and individual enthusiasts, from one-off projects to ongoing production requirements.

We understand that choosing the correct material is critical. When selecting tube for safety-critical structures, consider strength, elongation, weldability, formability, and compliance with relevant motorsport regulations.

15CDV6 Roll Cage Banner

15CDV6

15CDV6 / 1.7734.5 / GT1000
25CRMO4 Roll Cage banner

25CRMO4

25CRMO4
4130 Roll Cage banner

4130

AISI 4130
Proform 700 Roll cage Banner

ProForm 700

ProForm 700 High Performance tube
Proform Kart Roll Cage banner

ProForm Kart

ProForm Go Kart Tube
ROPT510 Roll cage banner

ROPT510

ROPT510 MSUK and FIA approved
T45 Roll cage banner

T45

BS4T45 to BS5T100 / BS6S100

Our Roll Cage Tube Range

We stock a variety of steel grades to meet the demands of different motorsport disciplines, design requirements and manufacturing processes.

ROPT510® – Roll Over Protection Tube

Developed by ProFormance Metals, ROPT510® is a cold-drawn seamless steel tube specifically designed for roll cages, rollover protection structures, chassis construction and motorsport fabrication.

It combines high strength with excellent elongation, supporting the forming and bending processes required for bespoke cage manufacture.

  • Minimum tensile strength: 510 N/mm²
  • Minimum yield strength: 370 N/mm²
  • Minimum elongation: 25%
  • Designed to meet the relevant Motorsport UK requirements and approved by the FIA for applicable uses.

ROPT510® provides a practical solution for fabricators seeking a balance of strength, formability and cost. It is also used in general engineering and other applications where its specified mechanical properties are suitable.

BS4T45 / BS5T100 / BS6S100 – T45 Steel Tube

T45 is a high-strength steel tube used in demanding motorsport and engineering applications where strength and weight optimisation are important.

It is commonly associated with specialist race car construction and professionally engineered roll cage and chassis systems.

  • Minimum tensile strength: 700 N/mm²
  • Minimum yield strength: 620 N/mm²
  • Minimum elongation: 15%* Set by Proformance Metals; the standard doesn’t call for a minimum

Material specification and delivery condition are important when sourcing T45. The required grade, condition and certification should be confirmed against the design and applicable regulations.

15CDV6 – 1.7734

15CDV6 is a chromium-molybdenum-vanadium alloy steel used in high-performance motorsport, aerospace and specialist engineering applications.

  • Minimum tensile strength: 980 N/mm² (1.7734.5 condition)
  • Minimum yield strength: 790 N/mm²
  • Minimum elongation: 11%

It offers a combination of strength and toughness that makes it suitable for demanding structural applications. The appropriate delivery condition, fabrication procedure and mechanical properties must be considered when selecting this material.

25CrMo4 – Chromium-Molybdenum Steel

25CrMo4 is an alloy steel used in engineering and motorsport applications where its mechanical properties and manufacturing characteristics meet the design requirements.

Its suitability for roll cage and chassis construction depends on the specified condition, tube dimensions, fabrication process and applicable regulations.

4130 Chromoly Steel

AISI 4130 is a chromium-molybdenum alloy steel commonly referred to as Chromoly. It is used in a variety of motorsport, automotive and engineering applications, including certain chassis and tubular structures.

  • Minimum tensile strength: 670 N/mm²
  • Minimum yield strength: 435 N/mm²
  • Minimum elongation: 25%

Its suitability depends on the material specification and intended application. Welding and fabrication procedures require particular consideration, as the alloy composition and heat-affected zones can influence the finished component’s properties.

ProForm®700

ProForm®700 is a high-performance tube option developed for applications where strength, fabrication requirements and material cost must be considered together.

  • Minimum tensile strength: 700 N/mm²
  • Minimum yield strength: 620 N/mm²
  • Minimum elongation: 15%

It offers an alternative for suitable engineering and motorsport applications. Always check the material’s specified mechanical properties and confirm that it meets the requirements of your intended use before ordering.

Need help choosing a grade? Contact our team with your application, required dimensions and relevant regulations, and we can help you identify a suitable material to investigate.

Choosing the Correct Roll Cage Tube

Not all steel tubing is interchangeable. Selecting a tube based solely on its outside diameter and wall thickness can result in material that does not meet the mechanical or regulatory requirements of the finished structure.

The correct selection depends on several factors:

  • Steel grade: Different grades have different chemical compositions and mechanical properties.
  • Yield and tensile strength: These determine how the material responds to applied loads and deformation.
  • Elongation and formability: These influence how the tube behaves during bending and forming.
  • Weldability: Material composition and delivery condition can affect the appropriate welding procedure.
  • Dimensions: Outside diameter and wall thickness must comply with the applicable design and regulations.
  • Certification and traceability: Material documentation helps verify the supplied grade and its specified properties.
  • Motorsport regulations: Requirements vary by governing body, competition category and vehicle specification.

What Does CDS Mean?

CDS stands for Cold Drawn Seamless. It describes the manufacturing process, not a specific steel grade or guaranteed set of mechanical properties.

CDS tubes are available in a wide range of steel grades, with substantial differences in strength, elongation and suitability for bending or forming.

For roll cage construction, it is therefore essential to establish the exact grade and material specification before purchasing. A tube described simply as CDS should not automatically be assumed suitable for a safety-critical motorsport application.

Read more about our Cold Drawn Seamless (CDS) tube range.

Roll Cage Tube for Different Motorsport Requirements

Motorsport governing bodies specify requirements for materials, dimensions and construction methods. These requirements can differ between competition categories and vehicle types.

Before ordering, check the current regulations applicable to your vehicle and competition. Confirm that the selected grade, tube dimensions and material certification satisfy those requirements.

For designs requiring homologation or specific approval, the complete design and construction must comply with the relevant approval process. Choosing a high-strength material alone does not make a roll cage compliant.

Why Buy Roll Cage Tube from ProFormance Metals?

ProFormance Metals supplies specialist metals and plastics to customers across motorsport, aerospace, defence, film and general engineering.

Our roll cage tube service is built around helping customers source suitable materials for their projects.

  • Specialist material knowledge: Support in identifying the relevant steel grades and specifications.
  • A wide choice of materials: Options for different motorsport and engineering applications.
  • Small and large requirements: Our minimum supply quantity is one length of tube, subject to stock availability.
  • Material traceability: Certification is available for applicable materials and orders.
  • Straightforward ordering: Contact our team with your dimensions, grade and quantity requirements.

We supply both individual enthusiasts undertaking their own projects and businesses supporting professional motorsport programmes.

Roll Cage Gussets

We also stock curved roll cage gussets for selected tube sizes, including 1.750-inch, 1.500-inch and 40 mm diameter applications.

Gussets can help reinforce joints and connections when incorporated into an appropriately engineered design. Please confirm the required size and suitability for your application when enquiring.

Request a Quote for Roll Cage Tube

Whether you are building a bespoke roll cage, manufacturing a spaceframe chassis or sourcing material for a motorsport engineering project, ProFormance Metals can help you discuss your requirements.

To obtain a quotation, please provide:

  • Required steel grade
  • Outside diameter and wall thickness
  • Required lengths and quantity
  • Applicable material standard or motorsport regulations
  • Any certification or traceability requirements

Click here for Motorsport UK and FIA Regulations 

With no minimum order charge and our minimum quantity of supply being 1 length of tube, we can cater for small roll cage adjustments, project builds, and full works team preparation.

We can also use our network of cage fitters and fabricators to help you with either a local installation or the best in the business for your needs.

We also stock curved roll cage gussets. 

Suitable for 1.750″, 1.500″, and 40mm diameter tubes.

Click the image to find out more

Industry terms

Roll Cage

A roll cage is a specially engineered and constructed frame built in or around the passenger compartment of a vehicle to protect its occupants from being injured in an accident, particularly in the event of a rollover.

There are many different roll cage designs depending on the application, hence different racing organisations have different specifications and regulations.

Another benefit of a roll cage is that it will also help to stiffen the chassis, which is desirable in racing applications.

The ProFormance metals stock range caters to MSA National, SFI, and FIA International cage manufacturers.

Roll Bar

A roll bar is a single bar behind the driver that provides moderate rollover protection. Due to the lack of a protective top, some modern convertibles utilise a strong windscreen frame acting as a roll bar. Also, a roll hoop may be placed behind both headrests (usually one on older cars), which is essentially a roll bar spanning the width of a passenger’s shoulders.

Roll Over Protection Structure

ROPS refers to operator compartment structures (usually cabs or frames) intended to protect equipment operators and motorists from injuries caused by vehicle overturns or rollovers.

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