I can't believe lower unsprung weight has come up as a reason to buy a lighter bar :rolleyes: !
Yes, lower unsprung weight across the board is a great idea. So is lower sprung weight, although less so than unsprung. No aurguments there.
But to call a sway bar unsprung weight is to misunderstand the idea of 'unsprung'. Unsprung means moving up and down with the wheels, ie below the spring and damper. With sway bars, very little of the sway bar mass is truly unsprung - only the end links really - and the rest rotates in mounts in the subframe. That means the vast majority the weight is sprung, since the weight of the bar is borne (along with the subframe) by the springs in the suspension.
That said, there are many great reasons to get the aussie bar. 1, it's light. 2, it's 4130 steel, so it's gonna be durable. 3, it's made by AAM, the maker of many OE bars.
In case you didn't know, I'm an automotive engineer that happens to hate half-azzed engineering mistruths. Like BAT's claim that their 21mm bar is strengthened to increase stiffness to that of a 22mm bar. That's a joke. Treatments can increase the strength of a bar, but we should all know by now that strength and stiffness are two different animals. Springs and sway bars are designed for stiffness. Any 21mm steel bar will have the same spring rate.
-Kurt
