Description

The NGage VH8RTII-9 Double Iridium Spark Plug is a motorcycle ignition component developed for a defined group of modern, fuel-injected motorcycles across KTM, Bajaj, Triumph, and Hero platforms. This listing focuses on its primary applications across KTM Duke, RC, and Adventure models, while also covering its specified use as the center spark plug for Bajaj Pulsar NS200 and RS200 Triple Spark engines.

Manufactured in Japan, the VH8RTII-9 is part of NGage’s Double Iridium spark plug series and is specified for use in both BS4 and BS6 compliant motorcycles, as stated by the manufacturer.

This spark plug is intended as a direct replacement for motorcycles listed in the compatibility section below and is engineered to match the ignition system requirements of these models as defined by NGage’s official part-number application chart.

Double Iridium Construction

NGage classifies the VH8RTII-9 as a Double Iridium spark plug, meaning iridium material is used on both the center electrode and the ground electrode.

Iridium is used in modern spark plug construction due to its high melting point and resistance to electrode erosion under repeated ignition cycles. This construction approach is commonly applied in motorcycles with high-energy ignition systems and tightly controlled combustion environments.

The double-iridium configuration is intended to maintain consistent electrode geometry over extended operating periods under normal riding conditions. NGage does not publish electrode dimensions, spark gap values, heat-range explanations, or service-interval figures for this model.

KTM Motorcycle Applications

NGage lists the VH8RTII-9 spark plug for the following KTM motorcycles:

• KTM Duke 200

• KTM Duke 390

• KTM RC 200

• KTM RC 390

• KTM Adventure 250

• KTM Adventure 390

These motorcycles span KTM’s liquid-cooled single-cylinder platforms that share common ignition system requirements.

For these models, the VH8RTII-9 is intended as a direct replacement spark plug without modification.

Bajaj Pulsar NS200 / RS200 — Center Plug Application

NGage also specifies the VH8RTII-9 for use in Bajaj Pulsar NS200 and RS200 Triple Spark engines.

These engines use a three-spark-plug configuration, consisting of:

• One center spark plug

• Two side spark plugs

For these motorcycles:

• The VH8RTII-9 is specified for the center spark plug position only.

• It is not specified for the two side spark plug positions.

This listing covers one (1) spark plug, intended to replace the center plug in the Triple Spark configuration.

Owners of Bajaj Pulsar NS200 and RS200 must ensure they are purchasing the correct spark plug for the correct position. The VH8RTII-9 should be installed only in the center plug location as per NGage’s compatibility chart.

Additional Manufacturer-Listed Applications

NGage also lists the VH8RTII-9 for the following motorcycles:

Triumph

• Speed 400

• Scrambler 400X

• New Speed T4

Hero

• Xpulse 210 4V

These models are included here for completeness of the manufacturer’s published compatibility.

BS4 and BS6 Compatibility

NGage specifies that the VH8RTII-9 spark plug is compatible with both BS4 and BS6 vehicles. This allows its use across production years that fall before and after the BS6 emission-standard transition, provided the motorcycle is included in the compatibility list.

No emission-reduction, tuning, or fuel-efficiency claims are made for this product.

Manufacturing Origin

The VH8RTII-9 spark plug is manufactured in Japan, as stated by NGage. No additional manufacturing process details or certification claims are published for this model.

Intended Use

The NGage VH8RTII-9 is intended for routine replacement during scheduled maintenance or spark-plug service intervals recommended by the motorcycle manufacturer. It is suitable for standard road use on the motorcycles listed below.

This spark plug is not positioned by NGage as a racing, track-only, or tuning component.

Compatibility

As per NGage official compatibility chart for part number VH8RTII-9:

KTM Motorcycles

• KTM Duke 200

• KTM Duke 390

• KTM RC 200

• KTM RC 390

• KTM Adventure 250

• KTM Adventure 390

Bajaj Motorcycles (Triple Spark — Center Plug Only)

• Bajaj Pulsar NS200 — Center plug only

• Bajaj Pulsar RS200 — Center plug only

Triumph Motorcycles

• Triumph Speed 400

• Triumph Scrambler 400X

• Triumph New Speed T4

Hero Motorcycles

• Hero Xpulse 210 4V

Variant Explanation

This listing is for NGage VH8RTII-9 Double Iridium Spark Plug only.

• “Double Iridium” refers to iridium usage on both the center and ground electrodes.

• This part number represents a single manufacturer-defined specification.

• For Bajaj Triple Spark engines, this spark plug is intended for the center position only.

• No alternate heat ranges or material variants are included in this listing.

Specifications

• Brand: NGage

• Part Number: VH8RTII-9

• Spark Plug Type: Double Iridium

• Vehicle Compatibility: BS4 & BS6

• Country of Manufacture: Japan

• Application: Motorcycle spark plug

Installation / Usage Notes

• Install only on motorcycles listed in the compatibility section.

• For Bajaj NS200 and RS200, install in the center spark plug position only.

• Follow the motorcycle manufacturer’s service manual torque specifications.

• Install on a cold engine.

• NGage does not publish spark-plug gap or torque values for this model.

Specifications

Pros and cons

• Strong, consistent spark under load
• heat
• Improved combustion efficiency
• throttle feel
• Longer service life versus standard plugs
• Suitable for daily riders
• touring applications
• Third-party premium plug — not OEM supplied
• Sold as a single plug; users must order exact quantity required
• Installation torque
• reach must be confirmed before fitment