Chrome Moly Round Tubing 1-5/8in x .083in x 4ft

The Chrome Moly Round Tubing 1-5/8in x .083in x 4ft from ALLSTAR PERFORMANCE is the foundation material for serious chassis fabrication, roll cage construction, and custom frame builds in street rods, race cars, and high-performance vehicles. Chrome molybdenum steel tubing delivers superior strength-to-weight ratios that aluminum cannot match, making it the industry standard for builders who demand durability without excess mass. Whether you're welding a competition cage, reinforcing a suspension pickup point, or designing a custom exhaust manifold support, this tubing handles the thermal cycling and vibration loads that regular steel cannot withstand reliably.

Chrome molybdenum alloy (typically 4130 specification) provides approximately 85,000 PSI yield strength compared to mild steel's 36,000 PSI—meaning thinner walls can carry identical loads, reducing unsprung weight and improving handling dynamics. The .083 inch wall thickness on this 1-5/8 inch outer diameter tube strikes the sweet spot between flex resistance and workability; it's rigid enough for main frame rails yet bendable enough for mandrel operations without cracking. The 4-foot length provides ample material for most fabrication projects while remaining manageable for shipping and workshop handling. This tubing responds excellently to TIG welding with proper rod selection and heat management, and the drawn tube finish accepts paint and ceramic coatings without extensive surface prep.

Fabricators, race teams, and restoration shops routinely specify ALLSTAR PERFORMANCE tubing for frame rails, roll bar construction, and structural reinforcement where weight savings and strength are non-negotiable. This diameter-to-wall ratio suits everything from lightweight 1,500-pound tube frame cars to dual-purpose street/strip builds where chassis flex directly impacts cornering precision and safety. Installers should note that chrome moly requires carbide cutting tools for clean cuts and TIG welding with ER70S-2 or ER80S-D2 rod; oxy-acetylene methods produce brittle HAZ characteristics unsuitable for dynamic loading. Stock this tubing for projects demanding engineered reliability rather than budget assembly.