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HybridZ

S30 rear control arm question


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The later arms (not exactly sure of the change date, 75 possibly?), are re-enforced in the area around the spindle pin bushing eyes, but otherwise are freely interchangable. Not likely any issue whatso ever for a street car. Might be less likely to deform if the spindle pins need to be removed with "great" force to extract them, that's about it.

Edited by z240
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The 280 arms are built stronger all over. Thicker tubing wall on the inner pivot, I believe the rest of the metal in the arm is thicker as well, reinforced at the outer bushing apparently too. For that reason I'd stick with 280 arms on a heavier 280 car. 280 arms for anything, 240 arms for 240s is the way I'd think about it. That said, control arm failure is not something you come across a lot.

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