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Isky Cams RAD 9000 Valve Spring Dual Spring Damper 550 lb in Spring Rate 1.150" Coil Bind 1.570" OD 4526XXXBU Boost: 29 inHG to 43 Air Cleaners Boost: 29 inHG to 43 550 lift than their previous best 165cc These tests are conducted daily in Isky's new enlarged dyno facility This assures the consumer of accuracy and quality control unparalleled in the industry
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