PAC Racing Steel C/M Spring Seats - 1.550 x .855 x .575 RG10002M compression ratio increase is approximately

compression ratio increase is approximately 3/10 of a percent with each 1/8 stroke

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PAC Racing Steel C/M Spring Seats - 1.550 x .855 x .575 RG10002M compression ratio increase is approximatelyProduct Description: Valve Spring Locator Inside 0. 060 in Thick 1. 550 in OD 0. 575 in ID 0. 855 in Spring ID Chromoly Set of 16 PAC Racing Springs is part of the Race Winning Brands Family. With more than 100 years of spring manufacturing experience. We understand the demands of racing and provide a commitment to all of our customers to provide the best service possible. We continue to expand products and offer expanded onsite technical services at