[HWYSTR455]

I believe the only difference in the CPP ones is that they don't have the 7/8" drop. I'm not sure about the steering arms though, and there is some geometry considerations there, but I haven't found any info saying they are different than the ATS/Speedtech ones.

The CPP ones are steel, the ATS/SPeedtech ones are aluminum. That's the only other different than I'm aware of.

The ATS/Speedtech spindles are lighter, stronger, and provide considerable geometry advantages over the OE spindles. Bump steer is almost non-existent, turn in and corner exit is improved, and driver confidence is majorly improved.

I had tall spindles on before I swapped to the ATS spindles, and I have a second car now (442) that has a tall spindle setup on it, so I was able to do apples to apples comparisons. The difference is major.

Not sure how others push their' cars, but I push mine hard. With the OE spindles, I was repacking wheel bearings like every 3-4 months, replacing them like every 2 years at most. I was so sick of it, I couldn't wait until I got the ATS spindles on, for just that reason. I drove like 100k miles, and never had to repack a wheel bearing. Nice.

With the OE spindles, ever get like an occasional shimmy on the highway? Does it seem every time you jack that thing up and wiggle the wheel there's play? Is there just this slight bit of wander on the top of the steering that you can never get rid of? All goes away with the ATS spindles.

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