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FinishLine™ Chassis Tubing

FinishLine™ is the benchmark in dimensional accuracy and mechanical reliability for elite race builds.

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Webco’s FinishLine™ chassis tubing is engineered to meet the exacting mechanical, dimensional, and surface finish requirements of today’s top-tier race teams and chassis builders. Whether you’re building for dirt, drag, or oval tracks, FinishLine™ delivers the consistency and performance that gets you to the checkered flag faster. With precision cold-drawing and atmosphere-controlled thermal processing, FinishLine™ ensures repeatable mechanical properties and industry-leading surface finishes—tube to tube, chassis to chassis, race to race.

Advantages
  • Predictable bending, welding, and weight-to-strength ratios
  • Superior surface finish for welders, painters, and pit crews
  • Trusted by top-tier teams in NASCAR, SCCA, USAC/Midget, and more
  • Used by 2023 Indy 500 Top 3 finisher Santino Ferrucci
Why Choose FinishLine™ Tubing?
  • Seamless and welded DOM and CrMo cold-drawn seamless tubing available in various sizes with consistent performance and finish characteristics.
  • Readily available in 4130 grade.
  • Webco offers mild carbon grades available in both welded and seamless DOM products.
  • Webco can provide CrMo or DOM tube products as centerless ground, allowing for exceptional surface and weight control.
  • Manufacturing and testing performed in Sand Springs, OK, USA.
  • Mechanical and dimensional consistency exceeds industry standards.
  • The Webco technical support team, backed by more than 50 years of manufacturing experience in tubular products.
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Composition

Composition shall conform to the percentages by weight shown in Table 1, determined in accordance with ASTM A751 or by other analytical methods acceptable to the purchaser.

Table 1 - Composition

Element Min Max Carbon 0.28 0.33 Manganese 0.40 0.60 Silicon 0.15 0.35 Phosphorus -- 0.025 Sulfur -- 0.025 Chromium 0.80 1.10 Molybdenum 0.15 0.25 Nickel -- 0.25 Copper -- 0.35
Tensile Properties

Tensile properties shall be as shown in Table 2.

Table 2A - Minimum tensile properties, inch/pound units

Nominal OD Inches Nominal Wall Thickness Inches Tensile Strength ksi Yield Strength at 0.2% Offset ksi Elongation in 2 Inches or 4D % Full Tube Elongation in 2 Inches % Strip 0.500 and over Up to 0.188, incl 95 75 12 7