Quote:
Originally Posted by X53Jay4.8is
......Surprisingly the original struts have are still charged and work well........
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Not surprised here Jay.
I've seen HD/HP Bilsteins with around 200k miles put on a shock dyno and tested, results have shown around 98% performance vs new specs.
The HP Bilsteins were installed OE on all sport pkg and 4.6is/4.8is E53s.
When these HP shocks are purchased aftermarket, they carry a lifetime warranty.