I think a quad shock system can work well if the right shock is used, and you have room to package it effectively. However, I don't really see how it would fix a spring bending issue? A kicker shock can calm the hop effect, but if you're bending the front of the spring regularly, I'd look into other root causes. Is the spring correct for the application, is something causing a bind, etc....

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I wonder why no one has matched the new coilovers of today with the leaf spring setup




I can't see a single good reason to combine coil overs with leafs other than to provide a band aid to worn out leafs. If your leaf springs are in good shape and have proper rates, there is absolutely no reason to add more spring to the suspension.