NGage B8RII-8 Double Iridium Spark Plug

NGage B8RII-8 Double Iridium Spark Plug — Universal Fitment

The NGage B8RII-8 is a Double Iridium spark plug made in Japan, compatible with BS-4 and BS-6 vehicles. It fits a wide range of mid-to-large displacement motorcycles across Royal Enfield, Triumph, Kawasaki, Yamaha, Bajaj, Benelli, Harley-Davidson, Suzuki, TVS, Aprilia, Jawa, Yezdi, and Hero platforms.

If your service manual or mechanic specifies B8RII-8 as the correct plug code, this is the exact component.

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Technical Specifications

Part Number	B8RII-8
Brand	NGage Powerparts
Series	Double Iridium
Origin	Made in Japan
Thread Diameter	14 mm
Heat Range	8
Electrode Type	Double iridium (iridium centre + iridium ground)
BS Compliance	BS-4 and BS-6 compatible
Supplied As	Single plug

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Why Double Iridium

Unlike standard iridium plugs that use iridium only on the centre electrode, the B8RII-8 uses iridium on both the centre and ground electrodes. This means:

• Spark erosion is distributed across both electrodes — significantly longer service life
• Consistent spark energy throughout the plug's lifespan, not just when new
• More reliable cold starts and stable combustion at all RPM ranges
• Suitable for high-displacement engines with higher ignition demand

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Full Compatibility Reference

Verified fitment per NGage compatibility data. Always cross-reference against your owner's manual or service documentation before purchase.

Royal Enfield

• Himalayan 411
• Himalayan 440
• Interceptor 650
• Continental GT 650
• Bear 650
• Super Meteor 650
• Shotgun 650
• Classic 650

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

Kawasaki

• Ninja 300
• Ninja 250R
• Ninja Z250
• Z900

Yamaha

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

Bajaj

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

Benelli

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

Harley-Davidson

• Street 750
• Street Rod 750

Suzuki

• Suzuki 125 Burgman
• Suzuki V-Strom 250

TVS Motor Company

• Apache RTR 160
• Apache RTR 180 ABS

Aprilia

• SR 125
• SR 150

Jawa

• Forty Two
• Bobber 42
• 350
• 42 FJ

Yezdi

• Roadster
• Adventure
• Scrambler

Hero MotoCorp

• Xpulse 200 2V / 200T

Compatibility is specification-based per NGage fitment data. Verify against your service manual before ordering. Bajaj Pulsar NS200, RS200, and 200NS Triple Spark models require 2 units (side plug positions).

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Installation Notes

• Verify pre-set gap against your manufacturer's specification before installation
• Tighten to the torque value specified in your service manual
• Clean threads before installation; do not over-torque
• Bajaj Pulsar NS200 / RS200 / 200NS Triple Spark side plug positions require 2 units per bike

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In The Box

• 1 × NGage B8RII-8 Double Iridium Spark Plug