- Joined
- Feb 21, 2019
- Messages
- 1,067
seems manufactures are phasing out straight copper core spark plugs in favor of resistor types, so if you're a fan of the copper core plugs for your BSA, you might want to stock up. so, just a heads up, rock auto, champion N3C and N4C plugs (factory closeout), about a buck each (+shipping). get them while you can -