N-Gage VH8RTII-9 Double Iridium Spark Plug – KTM, Bajaj, Triumph & Hero

Upgrade your motorcycle’s ignition system with the N-Gage Powerparts VH8RTII-9 Double Iridium Spark Plug, designed for selected KTM Duke, KTM RC, KTM Adventure, Bajaj Pulsar, Triumph and Hero motorcycles.

The VH8RTII-9 uses double-iridium electrode technology for durable and consistent spark performance. N-Gage lists this part number for both BS4 and BS6 compatible applications, provided the motorcycle appears in the specified compatibility chart. 

For Bajaj Triple Spark motorcycles, the VH8RTII-9 is specifically the CENTER spark plug, an important distinction when ordering a replacement.

Key Features

• Double Iridium Construction – Iridium construction on both firing and electrode sides for durability and consistent ignition.

• Designed for Reliable Ignition – Built to provide stable spark delivery across normal motorcycle operating conditions.

• Long-Life Construction – Iridium electrodes offer excellent resistance to wear and high operating temperatures.

• BS4 & BS6 Applications – N-Gage lists the VH8RTII-9 for compatible BS4 and BS6 motorcycles.

• Direct Replacement Application – Designed for the motorcycle applications specified by N-Gage.

• Wide Compatibility – Covers selected KTM, Bajaj, Triumph and Hero motorcycles.

• Made in Japan – Listed as manufactured in Japan.

Compatible Bikes

KTM

• KTM Duke 200

• KTM Duke 390

• KTM RC 200

• KTM RC 390

• KTM Adventure 250

• KTM Adventure 390

Bajaj – Center Spark Plug Only

• Bajaj Pulsar 200NS Triple Spark – Center Plug ×1

• Bajaj Pulsar NS200 Triple Spark – Center Plug ×1

• Bajaj Pulsar RS200 Triple Spark – Center Plug ×1

Important: On compatible Bajaj Triple Spark engines, the VH8RTII-9 is intended for the center spark plug position only. It should not be used as a substitute for the two side plugs unless specifically listed for that position.

Triumph

• Triumph Speed 400

• Triumph Speed T4

• Triumph Scrambler 400 X

Hero

• Hero Xpulse 210 4V

N-Gage's current product listing confirms these applications, including the Hero Xpulse 210 4V. 

Why Choose a Double Iridium Spark Plug?

Double-iridium spark plugs use iridium at both electrode contact points. Iridium's resistance to high temperatures and electrode wear makes it suitable for fine, durable spark plug electrodes.

The N-Gage VH8RTII-9 is designed to offer:

• Consistent spark delivery

• Reliable ignition

• Stable engine operation

• Durable electrode construction

• Resistance to electrode wear

• Long service life

• Reliable cold-start performance

• Reduced likelihood of ignition-related misfires when replacing a worn or faulty plug

Actual performance improvements will depend on the motorcycle, condition of the existing spark plug, engine condition, maintenance and other factors.

N-Gage VH8RTII-9 Specifications

Perfect for KTM Riders

The N-Gage VH8RTII-9 is particularly suitable for riders searching for an iridium spark plug for:

KTM Duke 200 | KTM Duke 390 | KTM RC 200 | KTM RC 390 | KTM Adventure 250 | KTM Adventure 390

Whether you're performing scheduled maintenance or replacing a worn conventional spark plug, the VH8RTII-9 provides a premium double-iridium replacement option for compatible KTM applications.

Bajaj Triple Spark Application

Special attention should be given when purchasing this spark plug for a Bajaj Pulsar NS200, 200NS or RS200 Triple Spark.

These engines use multiple spark plugs.

For the compatible models listed above:

VH8RTII-9 = Center Spark Plug ×1

Make sure you purchase the correct N-Gage part number if you are also replacing the side spark plugs.

Triumph 400 Compatibility

The VH8RTII-9 is also listed for Triumph's modern 400cc platform, including:

• Triumph Speed 400

• Triumph Speed T4

• Triumph Scrambler 400 X

This makes the N-Gage VH8RTII-9 a replacement option for riders searching for a Triumph Speed 400 iridium spark plug or Scrambler 400 X iridium spark plug.

Installation

For correct installation:

1. Allow the motorcycle engine to cool completely.

2. Remove the existing spark plug carefully.

3. Verify that VH8RTII-9 is the correct part number for your motorcycle.

4. Install the new spark plug carefully to prevent cross-threading.

5. Tighten according to the motorcycle manufacturer's recommended torque specification.

6. Reconnect the spark plug cap/ignition coil securely.

7. Start the motorcycle and check for normal operation.

Professional installation is recommended if you are unfamiliar with motorcycle ignition systems.

Important Compatibility Information

The N-Gage VH8RTII-9 is not a universal spark plug.

Always verify your motorcycle's exact model, model year, engine specification and required spark plug part number before purchasing.

Compatibility can vary between motorcycle generations. In particular, do not assume that a plug listed for an earlier KTM Duke/RC generation automatically fits a newer-generation model.

What's Included

1 × N-Gage Powerparts VH8RTII-9 Double Iridium Spark Plug