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Old 03-25-2024, 02:31 AM   #2
Registered User
Join Date: Dec 2008
Location: New Jersey
Posts: 14
It appears that the 421 (L) and 422 (R) calipers that you have are for the base Boxster. The S calipers would be 425 and 426.

Perhaps others can confirm that.
Tom Coradeschi
03 Boxster
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