Bergman Auto Craft Delrin Bushings and Pivot Pin Pkg Special use code BAC10
I never had an issue with stock arms and 11/16" bump stops. Like I said, wasting money on a new arm with a rubber bushing is ridiculous. Stock arm, thin bump stops, reinforcement plates and our delrin bushings/pivots. I have tons of street miles, auto X and open track events as proof. Its not really a debate in my eyes...Save your money and buy the forged upper arms so you have a taller ball joint and the ability to run 7 degrees of caster while maintaining reasonable negative camber (-.5) which helps straight line tracking.
An inch of suspension travel makes a heck of a lot more difference then a delrin LCA bushing does vs a poly bushing when it comes down to handling. More travel means the wheels stay on the ground longer, lower CG means better handling.
Look I’ve run stock LCA’s with reinforcing plates and thin bump stops. Yes, they work, but at the ride height I run (a-b= 0) you lose suspension travel if you do that, it’s just a fact. And I’m running 3/8” bump stops and 1.12” torsion bars. I still use ALL of my suspension travel, which remains close to 5.5” of total travel at the wheels.
The QA1 LCA’s are absolutely worth the money. The difference in CG at a lower ride height improves handling. The suspension geometry at the lower ride height is better. And being able to maintain the factory amount of travel keeps the wheels planted longer. It would be nice if they didn’t come with rubber bushings, but I understand from a production standpoint why they do. It’s easy enough to change them out for poly bushings and those are cheap, or Delrin bushings which are not. And I’ve been running the QA1 LCA’s on my Duster for over 7 years now, with over 25,000 miles on them (and your Delrin LCA bushings) in that time.
Don’t get me wrong, I love your Delrin LCA bushings, and I run your SPC UCA’s with delrin bushings, your idler arm bearing, and more stuff I don’t even recall at the moment and have another set of SPC UCA’s to buy for my Challenger yet. But the QA1 LCA’s aren’t junk, and while they are expensive the benefits they add are absolutely worth the price of the LCA’s. Does everyone need them? Of course not. But not everyone needs SPC UCA’s or delrin bushings either.
I’m honestly kinda surprised you’re arguing against them, given that I know you understand the importance of ride height and suspension geometry for getting one of these cars to handle well, and they allow changes that improve both significantly without losing suspension travel which is also critically important on a handling car.