I have the Williams axles also and know the story behind the their development. They're made from the same forging blank used in his drag racing products. The 4340 forging should have significantly better material qualities, especially at the critical location where the flange transitions to the axle. These have been around for over 20 years and there are a lot of them running around in cars today. PPC was the vendor that commissioned the introduction but the technical talent that did the development work was a third party. They're a high quality part.
Kelly
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