A modified 4340 steel with silicone, vanadium, higher carbon & molybdenum content. This is a premium material that is suitable for the most severe applications. It provides an additional 18% increase in impact and torsional strength over Hy-Tuf. The preferable choice in heavy cars with 3,000 or more horsepower. - Drag Race floater axle – 20 1/8 up to 24. - Machined from gun drilled 300M material. - Gun drilling removes approximately 1 pound per foot. Features : • 300M material • .875 ID hole bored entire length of axle • Hobbed 40 spline with 45° pressure angle on both ends • Involuted splines provide full surface contact area • Major machining performed before heat treat • Ensures consistent hardness & ductility • Thru hardening maximizes material's torsional strength • Shaft finished machined after heat treat to eliminate runout • Spirolox® prevents axle from shifting • Black oxide finish to resist corrosion • Material made in the USA • Designed and machined by Strange Engineering

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