I ran a 3 link rear for a while and did not like it. Felt too loose in the rear. Hard to get good geometry with the frame side upper mount being so high due to the drive shaft. Requires you to run a really high bridge and then you loose available up travel. This is likely why you don't see many manufacturers offer the 3 link.
Makes sense ,we recently had a big event in logandale . I was trying to get this guy in a JLU on tons and 40s threw a big v notch that's shaped like a z . He had a front and rear 3link . It traked like crap! I had gotten half a dozen rigs through with no problem. But the 3link sucked balls.
(So did the driver )but still the rear just didn't follow well with full flex.
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