Comp Cams Valve Spring Dual Competition Motorsport others may need a basic

others may need a basic initialization through the door control module

Both functions work straight away — they tie into your factory electrical system and switch

will be needed to purchase a set of 9007 lights bulbs for installation

USB:  USB charging

5/16-inch inner diameter - Direct replacement sizing for carb and EFI applications

Comp Cams Valve Spring Dual Competition Motorsport others may need a basicCOMP Cams Valve Springs By Design DUAL Manufactured from Super Clean wire to eliminate surface flaws and fissures Dual spring design capable of handling the increased lift in extreme stress applications Designed for superior strength and durability Adds valve train stability in race, street strip and street performance applications Dual Valve Springs from COMP Cams are manufactured from Super Clean wire and subject to extensive quality control testing