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      04-17-2015, 04:04 PM   #124
HP Autosport
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Drives: F80 M3
Join Date: Mar 2007
Location: Santa Barbara, AP, Brembo, GIAC, Koni, Ohlins, Performance Friction, www.hpautosport.com

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We typically use Swift thrust sheets in place of the rubber isolators so the rear springs can move freely with less spring rate spikes.

If noise is a concern, the thrust sheets acts like isolators as well.

Last edited by HP Autosport; 04-17-2015 at 04:25 PM..
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