From my limited research, radius rod suspensions are similar to radius arm setups but don't rely on such a large bind factor at the wrist. There is one link mounting point on the frame and two on the axle (upper and lower).
That's all I know. I could go into the why's but I'm not sure I'd be right. As to why it would be a good thing on a tall TJ......uuuhhh, it allows for a flatter link angle? That's assuming it's a GOOD thing. From my research with radius arms, it's not.
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Last edited by Imped; 07-27-2010 at 09:16 AM.