Catcams - High lift Dual Valves spring set - Honda - L15B1Specifications: Manufacturer: Catcams Reference Number: PAC D99865 Specs duration (Lift in mm): PAC racing valve springs began its existence with cutting edge technology in material advancements and processing advancements that have allowed our valve springs to excel in all forms of racing. From PAC proprietary alloy PACALLOY, to PAC enhanced processing to our continued development of further materials and processing, PAC racing springs will give you