What makes iridium spark plugs better than standard ones?

Iridium is a much harder and more durable metal than platinum or nickel, with a higher melting point. This allows for a finer electrode design, which creates a stronger spark for improved ignition and performance. The durability of iridium also means they tend to last longer.

Do these plugs come pre-gapped?

Spark plugs are often pre-gapped by the manufacturer, but it's always a good idea to check and adjust the gap to your specific engine's requirements before installation. Refer to your vehicle's service manual for the correct gap setting.

What is the benefit of the tapered cut ground electrode?

The tapered cut on the ground electrode helps to reduce the chance of carbon or fuel deposits building up. This improved anti-fouling characteristic helps ensure a consistent spark, leading to better starting, idling, and throttle response.

NGK Iridium IX Spark Plug BR8ECMIX 3520

Name: NGK Iridium IX Spark Plug Box of 4 (BR8ECMIX)
Brand: NGK
Price: 58.21 USD
Availability: InStock

NGK Iridium IX Spark Plug Box of 4 (BR8ECMIX)

$58.21

On Backorder

Order now to reserve yours — we'll ship as soon as stock arrives. Full refund if we're unable to fulfill.

NGK Iridium IX Spark Plug Box of 4 (BR8ECMIX). Offers improved acceleration and durability for performance applications.

Key Features

Fits many KTM and Kawasaki motorcycle models.
Iridium fine wire center electrode offers improved durability and consistent spark.
Tapered cut ground electrode helps prevent fouling for better starting and idling.
Trivalent metal plating provides superior resistance to corrosion and seizing.
Designed for modified or high-performance applications, or as an upgrade to OE plugs.
Box of 4 plugs.

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Will this fit your vehicle?

Product Details

NGK is known for making solid ignition components, and their Iridium IX spark plugs are a popular choice when you're looking for a step up from standard plugs. These are designed to handle the demands of modified or high-performance engines, or simply to give your stock engine a bit more pep. They're a great way to upgrade from OE nickel alloy plugs.

What makes these special is the iridium fine wire center electrode. Iridium is a very hard metal with a high melting point, which means it holds up well in today's hotter-running engines. This fine wire design helps create a strong spark, leading to improved starting, smoother idling, and better throttle response. Plus, the tapered cut ground electrode helps prevent fouling, keeping things running cleanly. The trivalent metal plating on the plug body also gives it good resistance to corrosion and seizing, making them easier to remove down the road.

This set comes with four plugs, which is what many 2-stroke and some 4-stroke engines use. They fit a range of vehicles, including many KTM 250 and 300 series models, as well as Kawasaki KX250 and KX250F motorcycles.