For Modified BSP 196cc Clone, Honda GX200, Predator Non Hemi 212cc and Yamaha F200. Springs measure 36lbs at .850 and coil bind at .450. RPM range capable of 8500-9000 in most applications. Stainless valves recommend. Must use part number DJ-1046 or DJ-1046T retainer and keeper kit.NOT RECOMMENDED FOR STOCK VALVES OR STOCK RETAINERS.
Will Not work in Hemi 212cc head without spring pocket modifications.