Description  KTM 250SX-F COPPER-ALLOY SEATS AND MOLDSTAR 90© VALVE GUIDE UPGRADE KIT # VSGK-KTM250SX-F-23THE ULTIMATE VALVE SEATS AND GUIDES COMBO A MUST HAVE FOR ALL RACERS AND FOR THOSE WHO LIKE TO RIDE HARD,THIS KIT COME WITH COPPER ALLOY VALVE SEATS INSERTS AND THE GUIDES ARE MADE FROM PREMIUM MOLDSTAR 90© MATERIAL