Finding the right 1.75-inch roll cage tubing is essential for safety, rigidity, and fit in your street-legal or race-ready chassis. This guide highlights top 1.75 in tubing options—focusing on DOM and mild steel varieties—so you can compare wall thickness, length options, and ease of fabrication. Whether you’re building a new cage or extending an existing frame, these selections reflect common motorsports standards and practical features for quick assembly and reliable performance.
| Product | Material | Wall | Length Options | Highlights |
|---|---|---|---|---|
| Speedway Motors Round 1020 DOM Steel Roll Cage Tubing | 1020 DOM | .095 in | 3, 7, 10 ft | Pre-cut lengths, durable DOM steel |
| Speedway Motors Mild Steel Roll Cage Tubing | HREW Mild Steel | .109 in | 7 ft | Pre-notched, ready to assemble |
| Allstar Round DOM Steel Tubing 1-3/4in x .120in x 4ft | DOM Steel | .120 in | 4 ft | Standard DOM specs, compact length |
| Allstar Round DOM Steel Tubing 1-3/4in x .120in x 7.5ft | DOM Steel | .120 in | 7.5 ft | Longer feed for larger cages |
| Roll Cage Swing Out Door Bar Kit, 1-3/4 Inch | 1018 Alloy Steel | N/A | N/A | Door bar swing-out feature for accessibility |
Speedway Motors Round 1020 DOM Tubing — 1.75″ With .095″ Wall
The Speedway Motors 1.75-inch DOM steel tubing uses 1020 DOM (Drawn Over Mandrel) construction for consistent wall thickness and strength. The .095-inch wall thickness balances rigidity with workable flexibility, a common specification for roll cages in performance builds. Available in 3, 7, and 10-foot pre-cut lengths, this option supports chassis fabrication, roll bars, and bumpers. DOM tubing is favored for its smooth internal diameter and predictable bending characteristics, which helps reduce kinks during fabrication.
Speedway Motors Mild Steel 1.75″ Roll Cage Tubing
This mild steel option uses a 1-3/4″ outer diameter with a .109″ wall for robust, cost-effective roll cage fabrication. Made from HREW 1020 material, it provides dependable strength and good weldability. The tubing is pre-notched where needed, which can considerably streamline assembly and reduce on-site cutting. Ideal for enthusiasts seeking a balance of strength, ease of fabrication, and budget-friendly performance in street stock or sanction-ready builds.
Allstar DOM Steel Tubing 1-3/4in x .120in x 4ft
Allstar’s DOM tubing in 1-3/4″ diameter and .120″ wall thickness is a practical choice for compact cages. The 4-foot length fits standard segment builds, with packaging that lists dimensions and weight to help plan shipping and storage. DOM construction enhances consistent wall thickness and smoother bending responses, which contributes to a safer, more rigid roll cage frame when paired with appropriate gussets and connectors.
Allstar DOM Steel Tubing 1-3/4in x .120in x 7.5ft
This Allstar option extends to 7.5 feet, offering longer straight runs without joints, which can simplify building taller cages or wider chassis. The .120″ wall diameter remains a standard thickness for race-focused cages, delivering robust rigidity without excessive weight. The product packaging lists dimensions and weight to assist with transport and fitment planning in a typical workshop setting.
Speedway Motors Round DOM Tubing 1-5/8″ — 3 Foot
While slightly smaller in diameter than 1.75 inches, this 1-5/8″ option offers a reference point for comparison when planning mixed-diameter cage sections. It uses round DOM steel with a .120″ wall and is sold in pre-cut lengths of 3, 7, or 10 feet. This allows fabricators to match different cage segments or adapters where precise geometry is critical for fit and alignment in compact vehicles.
Allstar DOM Steel Tubing 1-3/4in x .095in x 4ft
This Allstar tubing provides a lighter 1-3/4″ DOM option with a thinner .095″ wall, suitable for cages that prioritize reduced weight while maintaining structural integrity through DOM construction. The packaging shows typical dimensions and weight, enabling engineers to forecast inventory needs and shipping logistics for fabrication shops working on multiple projects.
Allstar Mild Steel Round Tubing 1-3/4in x .134in x 7.5ft
This Allstar mild steel option uses thicker walls (.134″) for higher rigidity in larger cages or when additional safety margins are desired. At 7.5 feet, it supports longer spans and reduces the number of joints needed, which can improve overall chassis rigidity. Packaging details include dimensions and weight for planning and shipment considerations in manufacturing environments.
Roll Cage Swing Out Door Bar Kit, 1-3/4 Inch
This door bar kit adds a practical swing-out feature to a 1-3/4″ cage, improving accessibility for entry and exit as well as maintenance. The kit uses billet steel components machined for precision and includes hardware compatible with standard roll cage tubing. It’s particularly useful for drag cars, street cars, or race cars with single-door-bar configurations that require occasional clearance adjustments during service or entry.
Buying Guide: Key Purchase Considerations
- Material and construction: DOM steel (drawn-over-mandrel) offers consistent wall thickness and predictable performance, typically preferred for safety-critical cages. Mild steel is a cost-effective alternative with good weldability but different long-term durability.
- Wall thickness: Typical options range from about .095″ to .134″. Thicker walls provide higher rigidity and impact resistance but add weight; thinner walls save weight but may require careful design to avoid flex under load.
- Diameter and compatibility: Confirm that the tubing is truly 1.75″ OD to match your cage design. Some products quote close variants like 1-5/8″ or 1-3/4″ with different wall thicknesses—verify compatibility with your connectors, gussets, and mounting points.
- Length and fabrication: Pre-cut lengths (3, 4, 7, 10 ft) ease cutting and fitting but may require splicing. Pre-notched options save time during assembly. Consider your chassis geometry and required joints when selecting lengths.
- Weldability and finish: DOM is well-suited to TIG welding with clean welds. Mild steel is typically easier to weld in some shop environments but may require protective finishes to prevent corrosion.
- Cost vs. performance: DOM tubing generally commands a premium over mild steel due to precision manufacturing. Balance budget with the intended use, whether for street performance, amateur race, or sanctioned competition.
- Accessory compatibility: If you plan a swing-out door setup, quantify clearances and ensure that the door-bar kit components match your tubing diameter and mounting points.
- Weight considerations: For performance-oriented builds, weight distribution matters. Weigh the structural benefits against added mass, especially in weight-sensitive classes.
- Regulatory compliance: Check applicable sanctioning bodies for approved tubing specifications, bend radii, and gusset requirements to ensure your build qualifies for competition.
Across these options, you’ll find a mix of DOM steel and mild steel with varying wall thicknesses and lengths. Choose the tubing that best aligns with your fabrication workflow, cage design, and safety requirements. Always plan for the full cage kit, including gussets, connectors, and mounting hardware, to ensure a robust, compliant build.
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