DENSO

Iridium Racing Plug IWM01-29

Product # 025-022-0290000

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Tariff-Free

24.43 USD (3,895 JPY)

Webike Point: +195 pt (1.22 USD)

Delivery Information

If manufacturer have in stock, ships around 3rd Jul. 2026

Quantity

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FITMENT

HONDA

NSR250 R MC16E

93-01
NSR250 R MC16E

90-93
NSR250 R MC16E

88-89
NSR250 SE MC16E

93-01

YAMAHA

TZR250 R

94
TZR250 R

91-94
TZR250 RS

91-94
TZR250 RS

94

SUZUKI

RGV250 Pγ

88-90
RGV250 Pγ SP

88-90
RGV250 γ

90
RGV250 γ SP

90

APRILIA

RS250

Number required: 2
RS250 SP

Number required: 2

Open Fit Model Information Table

Product detail

Quantity: 1
Plug heat range: IWM01-29
[Thread diameter: 14mm / screw length: 19mm / hexagon two side width: 20. 6mm]
[Terminal Shape: integral]
[Spark gap: 0.6mm / Insulator Project: -1.5mm / spark position: 0 mm / ground height: 1.6 mm / register: 5KΩ / spec: W-EM]
[Plug Type: Racing]
[DENSO heat value: 29]

Strong on the track.Iridium Racing, which contributes to the full performance and victory of the machine.

[High power in an ideal fuel economy cycle.]
Excellent ignition performance and spark voltage eliminates ignition loss and miss-ignition in a variety of operating ranges.As a result, the fuel consumption is dramatically improved and the engine power is increased.

[Overwhelming acceleration performance cultivated in the circuit]
Iridium lasing with a 0.4mm diameter center electrode achieves unprecedentedly excellent ignition performance and sparking voltage.This reduces misfires and provides stable high response and improved acceleration even under severe conditions.

[0.4mm diameter iridium alloy center electrode]
The thicker the center electrode of the plug is, the larger the cooling effect becomes and the worse the ignitability becomes.In comparison, the 0.4 mm diameter iridium alloy center electrode has an extremely small cooling effect and heat is not easily lost, so that ignition loss is reduced and more reliable ignitability, which can be called the basic performance of the plug, is realized.

[Trusted durability]
Unique all-platinum grounding electrode to withstand the intense riding conditions of racing.Compared to the nickel alloy used for the ground electrode of conventional spark plugs, platinum has a higher melting point, which reduces the risk of ground electrode melting and wear, even under the severe driving conditions of racing.In addition, 0.8mm square platinum alloy is welded to form a gap without bending, so there is no residual stress and durability is improved.

Points of Attention

* If there may be an instruction manual included, it will be written in Japanese.