I'm ordering a rear end, what is the difference between axle flanges? Standard, Star & Lightening Holes?

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I'm ordering a rear end, what is the difference between axle flanges? Standard, Star & Lightening Holes?

Standard flanges are a solid axle flange. Flanges with lightening holes have holes drilled in the flanges to reduce weight. Star flanges have a star shape for maximum weight loss. For anything but an all out race car where a few pounds really count standard flanges are what you will want.

Standard Flanges
Standard Axle Flanges