89
Unbeatable spark technology fine-tuned for racing
With an ultra-fine, 0.4mm diameter center electrode, Iridium Racing plugs are the realization of
superb ignition performance and spark voltage at unparalleled levels. Misfires have been
controlled and will allow you to have steadily high levels of response and increased acceleration.
Improved Acceleration
Through superb ignition performance and spark voltage, non-firing and
misfires under a variety of conditions has been greatly reduced. As a result,
combustion conditions have improved dramatically, increasing engine output.
Improved Output
It's the age of iridium electrodes. Discover more acceleration with 0.4mm DENSO Racing Plugs. DENSO
would like you to try the 0.4mm
advantage. Use
and
experience a ride like never before.
Unbeatable acceleration performance on the circuit.
More power with an ideal combustion cycle.
The power of the 0.4mm-diameter
center electrode
harnessed
for racing
▲Yoichi Ui
▲Denso Sard Supra GT
World's smallest 0.4mm-diameter center electrode
＊
＊As of May 2004
On the circuit is
where it makes
the difference
Reliability and Durability Borne Out by Race Results
and Trusted by Riders like Azuma, Ui, and Matsudo
Plug
Regular race plug
(0.8mm electrode)
13.9 14.0
13.950
13.985
Time to reach 100km/h
（s）
*The data shown is from internal studies. Also, the "Regular
Racing Plug" referred to here is a DENSO product.
Vehicle: 250cc (2-cycle water cooled, 2 cylinder) Conditions: R/L 50km/h, then accelerating for 27 seconds at full throttle (locked in 6th gear)
0 5 10 15 20 25 30
150
100
50
Time (s)
Regular Racing Plug
(0.8mm electrode)
Speed (km/h)
*The data shown is from internal studies. Also, the "Regular
Racing Plug" referred to here is a DENSO product.
Plug
33 34
33.92
33.49
Output
（ps）[at 120km/h]
Regular Racing Plug
(0.8mm electrode)
Vehicle: 250cc (2 cycle water cooled, 2 cylinder) Conditions: WOT 60 to 120km/h (locked in 4th gear)
50 60 70 80 90 100 110 120 130
Horsepower (PS)
35
30
25
20
15
10
Speed (km/h)
1.3
%
More!
Regular Racing Plug
(0.8mm electrode)
55 Types
in All
55 Types
in All
55 Types
in All
Some Plugs
in Stores 2004
