or 4 payments of Description
NGK R6725 High Performance Rotary Spark Plugs
These are the ultimate performance plug for any rotary engine. We have made it easy to decide which heat range to select by providing some easy to follow guide lines
Choose your desired heat range below
We recommend
9 Heat range plugs for pump fuel cars below 400HP
10.5 Heat Range Plugs for Pump Fuel or Ethanol Cars up to 500HP
11.5 Heat Range Plugs for Ethanol cars up above 500HP
