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Old 03-12-2019, 03:43 PM   #1
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PCA Announces New Spec Boxster Shock Package

From the PCA;

The Bilstein PSS9 shock, which is the spec shock for SPB, is no longer available, and it appears that parts to rebuild this model shock are also NLA. The SPB rules are amended to add the Motion Control Systems SPB damper, part number SET-1WNR-SPB-01 as an alternate shock for the class. The aluminum upper rear spring seat and the tender springs and separators may be aftermarket parts so long as they are substantially similar to the PSS9 part. Minor trimming of rain gutter sheet metal in the rear trunk above the shock adjuster to improve access is allowed.


Here is a link to all of the details with shock dyno results comparing the PSS9 to the new MCS. Existing Swift springs will work with the new shocks. New springs will be aftermarket from Tarett. Shock package is $2,650, New springs are $875.

PCA MCS Spec Boxster Shock System
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Last edited by thstone; 03-12-2019 at 03:45 PM.
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Old 03-13-2019, 07:23 PM   #2
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The original announcement stated the following "Current SPB racers can use their existing springs with the new MCS system, those building new cars will have to buy a spring kit designed for the MCS system."

I'm thinking that I'll likely buy the new shocks for my SPB, and use my existing PSS9 springs. The Bilsteins will then be used on my 986 daily driver with the original springs.
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