NGK Spark Plug IFR9H11

Introducing the ultimate evolution in spark plug technology and performance. Superior to Platinum, NGK Iridium spark plugs benefit from their unique patented design which feature:

A super fine centre electrode (0.6mm), reducing voltage requirements, minimizing flame quenching and allowing for a stronger spark

New Iridium material with superior anti-oxidation, anti-corrosion and extremely high melting point characteristics

Unique 2 stepped centre electrode – a secondary micro discharge burns off carbon deposits as they form

Minimized gap growth between electrodes, giving longer life

Tapered cut ground electrode ensures an excellent flame spread and improved vibration resistance
It is the combination of these designs in NGKs Iridium spark plugs that allows your engine to run more efficiently, producing cleaner exhaust emissions and more power though better ignitability.
We recommend all motorcycle parts are fitted and tested by qualified professionals.