Spark plug type

[Expat]

Help needed please men, have searched around and haven’t found a definitive answer as to suitability of NGK BR6 and BR7ES spark plugs for my bike as local auto stores here don’t have the regular B6 or B7ES. I understand they are the resistor type but will that cause issues with the coil ignition system? Thanks

[Groily]

Think they should be quite OK, it's only really with magneto ignition that the R versions are best avoided. The presence of a resistor shouldn't affect coil ignition. NGK 6 and 7 are good numbers for most of our machines, broadly comparable to Champion N5C and N4C.

[Expat]

Great, thanks Bill. It’s a seventeen mile ride to the store, so I lived dangerously while in town food shopping and bought one of each on spec.

[Expat]

Deleted (I think!) duplicate post.