BMW M2 M4 stage 2 NGK Spark Plugs
When tuning the popular BMW N55, S55, S63TU engines it is recommended to go with 1-step colder spark plugs.
We have tested various options & found that NGK have the solution.
By varying the gap according to boost levels we have found the optimal spark, please select your boost level from the drop-down menu
Supplied in a sets of 6 and pre-gapped