3000 Series Module Kit, Odd Increments - 87431 performance-exhaust 1-5/8” diameter primary tubes are

1-5/8” diameter primary tubes are used for increased exhaust flow increasing performance

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3000 Series Module Kit, Odd Increments - 87431 performance-exhaust 1-5/8” diameter primary tubes areOverview: Each kit is within a 1,000 rpm range. For example, the PN 8745 is supplied with: 5,000, 5,200, 5,400, 5,600, 5,800 modules. Features: Application: Year Make Model Submodel Engine Size Universal Specs: Brand MSD C. A. R. B. EO # D 40 29 Emission Code 1 Product Type RPM Modules Warranty Limited 1 Year Warranty