Ngk Iridium Ix Racing Spark Plugs - Superior Ignition
Ngk Iridium Ix Racing Spark Plugs - Superior Ignition
Available in stock (15)
About this product
About this product
Experience the pinnacle of spark plug technology with NGK Iridium IX Racing Spark Plugs. Designed for ultimate performance and longevity, these spark plugs deliver enhanced ignition and fuel efficiency for your motorcycle. Built to withstand the rigors of racing and high-performance applications, NGK Iridium IX spark plugs are the choice of professionals and enthusiasts alike.
Description
NGK Iridium IX Racing Spark Plugs leverage advanced materials and design to provide superior ignition performance. The ultra-fine iridium center electrode ensures a concentrated spark, promoting efficient combustion and maximizing horsepower. This design significantly reduces the voltage requirement, extending the life of your ignition system. The innovative metal shell plating offers enhanced anti-corrosion properties, ensuring long-lasting durability even in harsh environments. Upgrade to NGK Iridium IX spark plugs and experience the difference in throttle response, fuel economy, and overall engine performance. Easy to install, these plugs are a direct replacement for your stock spark plugs.
Features & highlights
- Ultra-fine iridium center electrode for concentrated spark and efficient combustion.
- Reduces voltage requirements, extending ignition system life.
- Enhanced throttle response and improved fuel economy.
- Metal shell plating provides superior anti-corrosion qualities.
- Designed for racing and high-performance applications.
- Direct replacement for easy installation.
Technical specifications
- Brand: NGK Spark Plugs
- Vendor Part Number: 4985
- Center Electrode Type: Fine Wire
- Center Electrode Projection: Non-Projected
- Electrode Tip Material: Iridium
- Ground Electrode Configuration: Single
- Ground Electrode Shape: Angled
- Hex Size: 16 mm (5/8")
- Thread Size: 14 mm
- Thread Reach: 19.1 mm (3/4")
- Electrical Resistance: 5k Ohms
- Terminal Configuration: Solid Terminal
- Type: Resistor Type
Important to know
Ensure proper fitment for your specific motorcycle model before installation. Refer to your motorcycle's service manual for spark plug replacement procedures.
Shipping & Return
Shipping & Return
Free shipping to GLS parcel shop parcel box for purchases over DKK 1,000.
GLS home delivery costs DKK 59.
We do our best to ship your order as quickly as possible. All orders are generally packed within 24 hours on weekdays.
There is a 14-day return policy. Read more
Parts Denmark Info
Parts Denmark Info
Parts Denmark is a new webshop based in Denmark. We have a physical location you can visit (No showroom yet), and we have both email and phone support in our opening hours.
Our company info is:
Parts Denmark ApS
VAT: DK45974758
Dam Holme 11
3660 Stenløse, Denmark
hello@partsdenmark.com
+45 222 333 29
Best regards,
William Svendsen & Martin Høyer (Owners)
Specifications
NGK SPARK PLUGS
4985
Spark Plug
14 mm
19,1 mm (3/4")
Solid Terminal
16 mm (5/8")
Angled
Single
Iridium
Fine Wire
Non-Projected
5k Ohms
Resistor Type
Each


Who is behind Parts Denmark
Martin and William are the duo behind Parts Denmark — an unlikely but awesome combo of a tech-savvy young IT wizard and a seasoned motorcycle guru who’s seen (and fixed) it all. Together, we’ve built a team with big ambitions, plenty of passion, and a shared mission to create great things — side-by-side with you.

