NGage VH8RTII-9 Double Iridium Spark Plug – KTM Duke/RC/Adventure, Triumph 400, Xpulse 210 & Pulsar NS200/RS200 Center Plug

NGage VH8RTII-9 Double Iridium Spark Plug – Made in Japan

NGage VH8RTII-9 is a premium Double Iridium motorcycle spark plug manufactured in Japan and specifically listed by NGage for selected KTM Duke / RC / Adventure, Triumph Speed 400 / Scrambler 400X / Speed T4, Hero Xpulse 210 4V and Bajaj Pulsar NS200 / RS200 Triple Spark center-plug applications.

This is the exact plug buyers may search for as KTM Duke iridium spark plug, Duke 390 spark plug, RC 390 iridium plug, Triumph Speed 400 spark plug, Scrambler 400X spark plug, Xpulse 210 iridium spark plug, NS200 center spark plug, RS200 center plug or simply VH8RTII-9.

Quick Product Details

Confirmed Compatibility – VH8RTII-9

Bajaj NS200 / RS200 Triple Spark – Buy the Correct Plug Position

This is one of the most important fitment details for this product.

NGage's compatibility chart specifies:

• VH8RTII-9 × 1 = CENTER spark plug
• B8RII-8 × 2 = SIDE spark plugs

So an NGage Double Iridium conversion for the manufacturer-listed Bajaj Triple Spark setup requires three plugs total, but not three identical plugs.

View NGage B8RII-8 Double Iridium Side Spark Plug

If your motorcycle has a different ignition configuration from the NGage-listed Triple Spark setup, verify the original plug specification before ordering.

KTM Duke / RC / Adventure Applications

NGage lists VH8RTII-9 for:

• KTM Duke 200
• KTM Duke 390
• KTM RC 200
• KTM RC 390
• KTM Adventure 250
• KTM Adventure 390

The manufacturer chart does not list Duke 125, Duke 250 or other KTM models for this exact code, so those fitments are not added merely because the engine family looks related.

Triumph Speed 400 / Scrambler 400X / Speed T4

NGage explicitly lists the modern Triumph 400 family:

• Triumph Speed 400
• Triumph Scrambler 400X
• Triumph Speed T4 / New Speed T4

This makes VH8RTII-9 a strong service / upgrade option for owners searching for a Speed 400 iridium plug, Scrambler 400X spark plug or T4 double iridium spark plug.

Hero Xpulse 210 4V – Current NGage Fitment

Hero Xpulse 210 4V does not appear on the older V4.9 compatibility page supplied in the NGage catalogue, but NGage's current official product page now specifically lists Hero X Pulse 210 4V under VH8RTII-9.

This is therefore included as a current manufacturer-confirmed application.

Do not confuse Xpulse 210 with Xpulse 200:

• Xpulse 210 4V → VH8RTII-9 according to current NGage product data
• Xpulse 200 4V / 4V Pro → BN8RTIIA-9
• Xpulse 200 2V / 200T → B8RII-8

Double Iridium – What Does It Mean?

NGage describes its Double Iridium range as using an Iridium firing pin and Iridium electrode pin, rather than using precious metal only at one electrode.

The manufacturer publishes a 0.6 mm iridium tip and a 360-degree laser-welding process for the Double Iridium construction. NGage positions this design around improved ignitability, durability and more stable combustion.

Manufacturer-Published Benefits

NGage markets its Double Iridium range around:

• Better combustion
• Reduction of misfires
• Improved acceleration
• Easier starting in cold / wet weather
• Improved fuel-efficiency potential
• More stable idle
• High durability

These are manufacturer performance claims, not guaranteed gains for every motorcycle. A weak battery, damaged ignition coil, injector/fuelling fault, compression issue, incorrect plug specification or other engine problem will not necessarily be fixed simply by fitting an iridium spark plug.

98% Pure Copper Core

NGage states that its Double Iridium construction uses a 98% pure copper core. The manufacturer positions the copper core around efficient heat dissipation, reliable starting and helping control spark-plug operating temperature.

High-Grade Alumina Silicate Ceramic

The manufacturer specifies a high-grade alumina silicate ceramic insulator, intended to provide robust electrical insulation and reduce the risk of dielectric punch-through through the ceramic body.

Up to 1,00,000 km – Understand the Claim Correctly

NGage advertises a maximum life of up to 1,00,000 km for its Double Iridium range with limited warranty.

This is a manufacturer maximum-life claim and should not replace the motorcycle manufacturer's inspection / replacement schedule. Actual plug life depends on combustion condition, fuel quality, oil consumption, engine health, ignition voltage, operating temperature and riding environment.

BS4 / BS6 Compatibility

NGage marks VH8RTII-9 as compatible with both BS4 and BS6 vehicles within the listed applications.

This does not mean VH8RTII-9 is a universal spark plug for every BS4/BS6 motorcycle. The exact motorcycle must still match NGage's application chart or have independently verified plug specification compatibility.

Do Not Guess the Spark-Plug Gap

NGage's current VH8RTII-9 product page and V4.9 compatibility page do not publish a vehicle-specific installation gap or tightening torque for every listed motorcycle.

Do not infer the gap only from the “-9” suffix or alter the electrode gap unnecessarily. Follow the exact motorcycle service manual / manufacturer installation specification.

Installation Notes

• Install only on a cool engine.
• Confirm the exact part number VH8RTII-9 before removing the old plug.
• Clean around the spark-plug well so dirt cannot enter the engine.
• Start the new plug by hand to reduce cross-threading risk.
• Use the motorcycle manufacturer's specified tightening torque.
• Do not over-tighten.
• Inspect the ignition coil / plug cap connection during installation.
• Do not alter the plug gap unless specifically required by the motorcycle or spark-plug manufacturer.
• For NS200 / RS200 Triple Spark, make sure this plug goes in the center position.

What You Will Receive

1 × NGage VH8RTII-9 Double Iridium Spark Plug

This listing supplies one spark plug only. Side spark plugs for Bajaj Triple Spark engines, ignition coil, plug cap, HT cable and other ignition components are not included.

Buyer FAQs

Does VH8RTII-9 fit KTM Duke 390?
Yes. NGage explicitly lists KTM Duke 390.

Does it fit KTM Duke 200?
Yes. Duke 200 is manufacturer-listed.

Does it fit KTM RC 200 / RC 390?
Yes. Both RC 200 and RC 390 are listed by NGage.

Does it fit KTM Adventure 250 / Adventure 390?
Yes. NGage lists both Adventure 250 and Adventure 390.

Does VH8RTII-9 fit Triumph Speed 400?
Yes. Speed 400 is explicitly listed by NGage.

Does it fit Triumph Scrambler 400X?
Yes. Scrambler 400X is manufacturer-listed.

Does it fit Triumph Speed T4?
Yes. NGage lists New Speed T4 / Speed T4.

Does it fit Hero Xpulse 210 4V?
Yes. NGage's current official VH8RTII-9 product page explicitly lists Hero X Pulse 210 4V.

Does it fit Xpulse 200 4V?
No. NGage lists Xpulse 200 4V / 4V Pro under the different BN8RTIIA-9 spark plug.

Does it fit Xpulse 200 2V / 200T?
No. NGage lists those under B8RII-8.

Does VH8RTII-9 fit Pulsar NS200?
For NGage's listed Triple Spark NS200 application, yes – but center plug only × 1. The two side plugs use B8RII-8.

Does it fit Pulsar RS200?
For the NGage-listed Triple Spark application, yes – center plug only × 1.

How many plugs do I receive?
1 spark plug.

Is it made in Japan?
Yes. NGage's V4.9 catalogue artwork identifies its Double Iridium plug range as Made in Japan.

Is it really Double Iridium?
Yes. NGage describes the product as using an iridium firing pin and iridium electrode pin.

What is the MRP?
₹900 inclusive of taxes.

What is the NGage maximum-life claim?
NGage advertises up to 1,00,000 km. Treat this as a maximum manufacturer claim, not a guaranteed service interval.

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