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Genuine DENSO IW27 Iridium spark plug, engineered for high-performance 2-stroke and 4-stroke engines
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Ultra-fine 0.4mm iridium center electrode enhances ignition efficiency and throttle response
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360° laser-welded construction ensures durability under extreme conditions
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Heat range 27 (colder than IW24) – ideal for hotter engines or extended high-RPM operation
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Standard 14mm thread, 19mm reach, 20.6mm hex size, flat seat
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Resistor type (5K ohm) with a tapered ground electrode for improved flame propagation
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Compatible with many racing engines including Rotax Max and IAME X30
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For Rotax Micro & Mini, see also NGK GR8DI (298102) spark plug. Check rules for legality
