NGK Racing Spark Plug Box of 4 (R0409B-8)

When you're pushing your 2005-2009 Honda CRF250R to its limits on the track, you need ignition components that can keep up. These NGK Racing spark plugs are built specifically for those demanding situations, designed to handle the intense heat and pressure of racing. They're a popular choice among champions because they offer reliable ignition even when the engine is working its hardest.

The center electrode on these plugs features special designs to ensure they last and fire consistently, giving you the ignitability you need for peak performance. NGK uses a pure alumina silicate ceramic insulator, which is strong and transfers heat effectively. This, along with a copper core, helps manage heat buildup inside the combustion chamber. The special insulator nose shape is also designed to improve throttle response, so you feel a more immediate reaction when you twist the throttle.

You get a box of four plugs, which is what you'll need for your CRF250R. The trivalent metal plating on the outside helps prevent corrosion and seizing, making installation and future removal much easier. Plus, triple seals are used to prevent any leaks.