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Old 11-16-2023, 11:19 AM   #50 (permalink)
cv129
A True Z Fanatic
 
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Join Date: Jul 2011
Location: Dallas, TX
Posts: 3,236
Drives: 09 Nismo, 16 Nismo
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Quote:
Originally Posted by Smokey Nagata View Post
Why spend 1,000+ $$ on something you or no one else will ever see
Hi Smokey, your car, your choice. I have no issue with you promoting the Z1 arms. However, relating to suspension matters, the above sentence is very wrong.

TLDR: people buy SPL for the highest assurance of A) arm not snapping in high loads and B) alignment remains during high loads. There’s no guarantee, but some rather pays extra for a higher assurance. It’s like buying a car with best safety rating.

Long version: quantitatively / objectively speaking, there’s no evidence that GK Tech or Z1 FUCA are inferior. After all, the designs are the same. Spherical bearings likely wouldn’t cause any catastrophe.

So what else? That would be the welds and the metallurgy. Those are the spots where if fail, aka if arm snaps, car instantly becomes completely uncontrollable since we can’t control the wheel’s direction any more (two cases in this forum, one on track, one during a mountain drive). Does anybody have any real evidence Z1 or GK Tech employ inferior source of metal, or inferior manufacturing process? No.

But, this is where the SPL history comes in. In the lack of quantitative evidence, we look to the history of quality production and motorsports. SPL specialises in suspension parts, and their parts have longer proven history than others, and this is unquestionable.

For that higher assurance, some of us chose to pay the higher price. Few hundred bucks more is well worth it if you know how bad things get when a suspension arm breaks.
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