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IRIDIUM POWER will improve all aspects of your vehicle performance – from acceleration and
throttle response to idle stabiltity and mileage – thanks to the world's smallest 0.4 mm iridium
center electrode, providing high-level ingnition and low jump spark voltage. You can count on this
plug to come through for you on the race circuit as well, virtually guaranteeing you victory after
victory. Private touring enthusiasts will also be happy with its comfortable long drive and low
fuelconsumption.
TERMINAL-ATTACHMENT SPECIFICATION
It comes with a terminal nut that makes it compatible with all plug codes, but which can be
removed if not needed. (On all types.).
TRUSTWORTHY INTERNAL RESISTORS
IRIDIUM POWER is specified for 5k resistors on all types. It also comes with a trustworthy internal
monolithic resistor. It shuts out all noise to electonic equipment. (All types.).
ANTI-CORROSIVE GLOSSY NICKEL PLATING
The same high-gloss nickel plating that is used for racing is used on the housing, and attains a
high level of anti-corrosion. This means that it will not rust up on you even if used for touring in
the rain or during motocross. (Not applicable to IW16, IW20, IW22, IXU22, and IXU24.)
TAPERED CUT GROUND ELECTRODE (Tapered Cut)
The ground electrode has had its tip cut to a fine taper. Lowering the anti-inflammatory action has
greatly increased ignition performance. The streamlined taper makes the air-fuel mixture flow
more smoothly, guaranteeing steadier ignition. (Not applicable to IU24A, IU27A, IU31A, IUF27A
and IUF31A.)
U-GROOVE GROUND ELECTRODE (U-Groove)
A U-shaped groove has been set into the inside of the ground electrode, creating the space
volume necessary for formation of the spark nucleus. Superb ignition performance has been
attained without increasing the spark gap and at the same time maintaining low jump spark
voltage. (World-wide patent acquired in 1975.) (Not applicable to IU24A, IU27A, IU31A, IUF27A
and IUF31A.)
PORCELAIN PROJECTION
We have designed the porcelain projection using a plug heat range that achieves the most
appropriate values. It combines the self-cleaning properties of low plug heat range, and the
heatresistance of high plug heat range to satisfactorily comply with all plug heat range needs. (All
types.)
THE 0.4 MM-RADIUS MICRO IRIDIUM CENTER ELECTRODE
We have reduced the central electrode tip to a micro scale through use of our "new iridium alloy,"
a high melting point material. The jump spark voltage has been reduced, greatly improving the
ignition performance. The iridium alloy employed is a specialized material developed originally by
DENSO, and patents have been taken out on it in Japan (2877035) and the UK (2302367). (All
types.)
AMOUNT OF CENTER ELECTRODE PROTRUSION
In order to increase ignition response, the center electrode protrudes farther than the standard
type. This has the benefit of increasing throttle responsiveness, thereby improving overall
acceleration. (Only on IUH24, IUH27, IX22, IX24, IX27, IUF22, IUF24, IWF22, IWF24, IWF27, IW24,
IW27, IW29, IW31, and IW34.)
CIRCUMFERENCE LASER WELDING
We have used "cirumference laser welding" which can withstand even the harshest driving
conditions thanks to the highly dependable iridium chip joints. (All types.)
JUMP SPARK VOLTAGE
The slimmer the electrode, the more concentrated the potential, and the stronger the electric field
becomes, reducing jump spark voltage. This results in constant combustion in all areas of driving,
and improved starting and acceleration.
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