NGK Laser Iridium Spark Plug Box of 4 (KR8DI)

You're getting a box of four NGK Laser Iridium spark plugs, part number 4742. These are designed as direct replacements for your KTM 990 Super Duke, ensuring you have the right parts to get your engine running smoothly again. They feature an iridium-tipped center electrode, which is known for its durability and ability to maintain a stable spark, even in demanding conditions.

The construction here is solid, with a pure alumina silicate ceramic insulator that helps with heat transfer and provides superior strength. You'll also find trivalent metal plating, which helps prevent corrosion and makes them easier to remove down the road. The copper core inside helps pull heat away from the plug, preventing overheating, and the triple seals are there to make sure there are no leaks. These are a great choice if your KTM came with fine wire iridium plugs from the factory.