NGage B8RII-8 Double Iridium Spark Plug – Interceptor/GT 650, Himalayan 411, R15, MT-15, Ninja 300, Jawa, Yezdi & More

NGage B8RII-8 Double Iridium Spark Plug – Made in Japan

NGage B8RII-8 is a Double Iridium motorcycle spark plug listed by NGage for a very wide range of motorcycles and scooters including Royal Enfield Interceptor 650 / Continental GT 650, Himalayan 411, Super Meteor 650, Shotgun 650, Classic 650, Bear 650, Yamaha R15 / MT-15 / R3 / MT-03, Kawasaki Ninja 300, Benelli 502 / TRK 502, Jawa, Yezdi, Aprilia, Bajaj, TVS, Triumph, Harley-Davidson, Suzuki and Hero applications.

Exact part number: B8RII-8. The two characters after “R” are capital letter I characters for Iridium – B8RII-8, not B8R118.

This product page follows NGage Master Catalogue V4.9 and NGage's current manufacturer product listing for the exact B8RII-8 part number. Do not select a spark plug only because the motorcycle has the same engine capacity as another listed vehicle.

Key Features

• Brand: NGage Powerparts
• Part Number / MPN: B8RII-8
• Type: Double Iridium Spark Plug
• Electrode Design: Double Iridium firing pin + electrode pin
• Iridium Tip: 0.6 mm – manufacturer-published specification
• Core: 98% pure copper core – manufacturer-published
• Insulator: High-grade alumina silicate ceramic
• Manufacturing: Made in Japan
• Compatibility Statement: NGage states compatibility with both BS4 and BS6 vehicle applications listed for this plug
• Manufacturer Life Claim: Up to 1,00,000 km
• Warranty: Limited warranty as stated by NGage
• MRP: ₹900 inclusive of all taxes
• Quantity Sold: 1 spark plug unless otherwise stated

Double Iridium Electrode Design

NGage describes B8RII-8 as a Double Iridium spark plug using iridium at both the firing pin and electrode pin. The manufacturer highlights a 0.6 mm iridium tip for improved ignitability and durability.

NGage also describes a 360-degree laser-welding process for the double-iridium tip. The manufacturer positions the design around a more stable ignition event, improved combustion and reduced misfire compared with its conventional single-tip comparison. Actual engine response, fuel consumption and performance depend on engine condition, fuelling, ignition system, maintenance and operating conditions.

98% Pure Copper Core

NGage states that the B8RII-8 design uses a 98% pure copper core. According to the manufacturer, the copper core is intended to improve heat dissipation, support reliable starting and help control spark-plug operating temperature.

High-Grade Alumina Silicate Ceramic

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

Manufacturer-Published Benefits

NGage markets its Double Iridium series around the following benefits:

• Better combustion
• Reduced 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 worn coil, injector/fuelling fault, compression issue, incorrect plug gap or another engine fault will not necessarily be corrected by changing the spark plug.

Confirmed Compatibility – NGage B8RII-8

Royal Enfield

• Himalayan 411
• Himalayan 440 – this is the exact model wording printed by NGage; verify the motorcycle model before ordering if your vehicle is a Scram 440 or another 440-class Royal Enfield
• Interceptor 650
• Continental GT 650 / GT 650
• Bear 650
• Super Meteor 650
• Shotgun 650
• Classic 650

Yamaha

• YZF-R15 V1
• YZF-R15 V2
• YZF-R15 V3
• YZF-R15 V4
• MT-15
• YZF-R3
• MT-03
• Aerox V2 / NVX 155

Kawasaki

• Ninja 300
• Ninja 250R
• Ninja Z250

Benelli

• 502 C
• TRK 502
• TRK 502 X
• Leoncino 500

Triumph

• Tiger 1050
• Tiger 1050 Sport
• Sprint GT
• Speed Triple
• Speed Triple 1050
• Speed Triple R
• Tiger 1200 Explorer
• Tiger 1200 XC
• Tiger 1200 XR
• Tiger Trophy

Harley-Davidson

• Street 750
• Street Rod 750

Aprilia

• SR 125
• SR 150

Suzuki

• Burgman 125 application listed by NGage
• V-Strom 250

TVS

• Apache RTR 160
• Apache RTR 180 ABS

Hero

• Xpulse 200 2V
• Xpulse 200T

Jawa

• Forty Two
• Bobber 42
• Jawa 350
• 42 FJ

Yezdi

• Roadster
• Adventure
• Scrambler

Bajaj Triple-Spark Applications – Side Plugs

• Pulsar 200NS Triple Spark – Side Plugs × 2
• Pulsar NS200 Triple Spark – Side Plugs × 2
• Pulsar RS200 Triple Spark – Side Plugs × 2

Critical Bajaj note: NGage lists B8RII-8 for the two side plugs of these triple-spark Bajaj applications. NGage lists a different Double Iridium code, VH8RTII-9, for the centre plug × 1. Do not order three B8RII-8 plugs as a complete triple-spark set unless your exact application specifically calls for them.

How Many Spark Plugs Should I Order?

This listing is priced and supplied as 1 × B8RII-8 spark plug. The total number required by the motorcycle varies by engine design and application.

For example, NGage specifically states that the Bajaj triple-spark applications above use two B8RII-8 side plugs plus a different centre plug. Multi-cylinder motorcycles can also require more than one spark plug. Always check the motorcycle service manual or the number of plugs being replaced before selecting quantity.

BS4 / BS6 Compatibility

NGage labels the Double Iridium B8RII-8 range as compatible with both BS4 and BS6 vehicle applications. This statement applies to the manufacturer-listed applications; it should not be interpreted as making B8RII-8 a universal spark plug for every BS4 or BS6 motorcycle.

Street, Touring, Track & Off-Road Use

NGage markets the Double Iridium series for street motorcycles as well as professional track and off-road users. Correct plug specification remains essential regardless of riding type.

Fitment / Return-Prevention Note

Spark plugs are specification-sensitive ignition components. Before ordering, verify:

• Exact NGage part number: B8RII-8
• Motorcycle make and model
• Model generation / year where relevant
• Required number of spark plugs
• Whether the engine uses different centre / side plugs

Do not substitute another NGage Double Iridium part number simply because it looks similar. Examples from NGage's own catalogue include:

• VH8RTII-9: Bajaj NS200 / RS200 triple-spark centre plug and selected KTM / Triumph applications
• DH7RTII-8: Royal Enfield Reborn Classic 350, Meteor 350, Hunter 350 and Bullet 350 Reborn
• BN8RTIIA-9: Royal Enfield Himalayan 450 / Guerrilla 450 and Hero Xpulse 200 4V applications

Installation Note

Professional installation is recommended if you are unsure of spark-plug servicing.

• Install only when the engine is cool.
• Confirm the correct plug specification before removing the old plug.
• Keep dirt and debris from entering the combustion chamber.
• Start the plug by hand to avoid cross-threading.
• Use the motorcycle manufacturer's specified spark-plug tightening torque.
• Do not over-tighten the plug.
• Inspect the ignition cap / coil connection during installation.
• Do not alter electrode gap unless the vehicle or spark-plug manufacturer specifically requires it.

What You Will Receive

1 × NGage B8RII-8 Double Iridium Spark Plug

Unless the order quantity is increased, this listing supplies one spark plug only. Ignition caps, coils, HT cables and other ignition parts are not included.

Buyer-Focused FAQs

Is the correct code B8R118 or B8RII-8?
The manufacturer part number is B8RII-8. The characters after “R” are two capital letter I characters, not the number 1.

Is B8RII-8 a double-iridium plug?
Yes. NGage identifies B8RII-8 as a Double Iridium spark plug with iridium on the firing and electrode pins.

Is NGage B8RII-8 made in Japan?
Yes. NGage's catalogue and product material mark the B8RII-8 Double Iridium range as Made in Japan.

Does B8RII-8 fit Royal Enfield Interceptor 650?
Yes. NGage lists B8RII-8 for Interceptor 650.

Does B8RII-8 fit Continental GT 650?
Yes. NGage lists Continental GT 650 under B8RII-8.

Does B8RII-8 fit Bear 650?
Yes. Bear 650 is listed by NGage for B8RII-8.

Does B8RII-8 fit Super Meteor 650?
Yes. NGage lists Super Meteor 650 for B8RII-8.

Does B8RII-8 fit Shotgun 650?
Yes. NGage lists Shotgun 650 for B8RII-8.

Does B8RII-8 fit Classic 650?
Yes. NGage lists Classic 650 for B8RII-8.

Does B8RII-8 fit Himalayan 411?
Yes. Himalayan 411 is specifically listed by NGage.

Does B8RII-8 fit Himalayan 450?
No according to NGage V4.9. Himalayan 450 is listed with a different Double Iridium plug: BN8RTIIA-9.

Does B8RII-8 fit Guerrilla 450?
No according to NGage V4.9. Guerrilla 450 is listed with BN8RTIIA-9.

Does B8RII-8 fit Meteor 350 / Hunter 350 / Reborn Classic 350?
No according to NGage V4.9. These motorcycles are listed with DH7RTII-8.

Does B8RII-8 fit Yamaha R15?
Yes. NGage lists YZF-R15 V1, V2, V3 and V4.

Does B8RII-8 fit Yamaha MT-15?
Yes. MT-15 is listed by NGage.

Does it fit Yamaha R3 / MT-03?
Yes. Both YZF-R3 and MT-03 are listed.

Does it fit Yamaha Aerox?
NGage lists Aerox V2 / NVX 155 for B8RII-8.

Does B8RII-8 fit Kawasaki Ninja 300?
Yes. Ninja 300 is listed by NGage.

Does it fit Bajaj NS200 / RS200?
For NGage's listed triple-spark applications, B8RII-8 is used for the two side plugs. The centre plug is listed separately as VH8RTII-9.

Does B8RII-8 fit Jawa and Yezdi motorcycles?
NGage lists Jawa Forty Two, Bobber 42, Jawa 350 and 42 FJ, plus Yezdi Roadster, Adventure and Scrambler.

What is the NGage claimed service life?
NGage advertises a maximum life of up to 1,00,000 km. This is a manufacturer maximum-life claim, not a guaranteed replacement interval. Follow the motorcycle manufacturer's inspection and replacement schedule.

Will it automatically increase horsepower or mileage?
NGage markets Double Iridium around improved combustion, acceleration, fuel-efficiency potential and stable idle. Actual results depend on the complete engine and ignition system, so a fixed power or mileage gain is not guaranteed.