0 Members and 1 Guest are viewing this topic.
ngk is the best plug for the kx ......i did alot of plug testing.. a 8 heat range should only be consdered for a completly stock and used k5.. a 9 heat range for the thingasket or up to about .020 cut from head.. i run a 10 heat range with 15.5 compresion ..at optimal jetting...020 to .025 gap works well .. and i have not been using the fine wire plug tips