NGK Iridium IX. A 0.6mm fine-wire iridium centre electrode in place of a conventional one, firing a sharper, more focused spark.
On a big single that has to light reliably from cold, that means easier starting, a steadier idle and cleaner running, and iridium holds its gap far longer than the plug it replaces.
Direct fit. Nothing to adjust.
Find your bike
Royal Enfield · Cast Iron Bullet 350, pre-2008 CI engine only Takes 1
Not for the BS4 / BS6 UCE twin-spark 350, which takes a two-plug kit. Other Bullets differ too: the LB 350 Machismo takes the BPR7EIX and the LB 500 Machismo the BR9EIX. All are on our site.
Specifications
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Part number · BR6HIX
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Type · Iridium IX, 0.6mm fine wire
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Heat range · 6
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Conventional equivalent · BR6HS
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Sold as · single plug
Fitting
Arrives pre-gapped and ready to fit. Thread in by hand first, then torque to your manual's figure. If you check the gap, move the outer electrode only.
Unsure which you need? Send us your bike and year and we will confirm before you order.