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FEULING PARTS - VALVE SPRING KIT - TI RETAINERS - FOR 5/16" VALVE STEM - EVO | TWIN CAM drag_part_13102394 2007 Harley Davidson FLHX StreetValve Spring Kit TI Retainers For 5 16" Valve Stem EVO Twin Cam Highlights Made from heat treated chromoly conical ovate wire Hand measured and labeled specifically based on their coil bing required open height Uses a much smaller and lighter weight retainer to reduce valve weight and create quicker rev and smoother motion Dyno proven and track tested Kit includes: Econo BeeHive valve springs, lightweight 7 steel or titanium retainers, machined heat