best spark plugs for rich harley sportster
The first thing that struck me about the NGK Iridium IX DCPR7EIX Spark Plugs wasn’t just their high-tech design, but how smoothly they perform under real riding conditions. After hands-on testing, I noticed they come pre-gapped and feature a tiny center electrode, which helps reduce voltage needs and boosts ignition reliability. That means crisper throttle … Read more