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24.42 USD (3,893 JPY)
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CRF250R
04-09 ME10 04.8-09.8 [displacement]250 [number of units required]1
[Stock Number] 7791
[Shape] Screw type
[Size]
Screw diameter: Φ10mm
Screw length: 19.0mm
Hexagon dihedral width: 16.0mm
[NGK part number] R0409B-8
[Type] Racing Plug
[Heat Value] 8
[Compatibility Information] HONDA Stock Part Number Compatibility: 31911-KRN-731
**Even if you purchase in units of 10 pieces (1 box), it will not be delivered in 1 box.
*Terminals, tightening angle, etc. may differ depending on the model.Please refer to the link for the detailed fitting and installation instructions..
* The image is only for reference. The image shown may differ from the actual product.
| [Features of NGK plug] |
| - This is a super "wide range" plug - |
| The center electrode , The center electrode is a "copper cored" construction with copper sealed to near the tip to allow a large amount of heat to escape quickly. The result is an ultra "wide range" plug that is resistant to burning and smoldering. |
 |
| Comparing the thermal characteristics of plugs with copper cores and plugs without copper cores, the plugs with copper cores have superior thermal characteristics and fouling resistance, and a wider thermal range. |
| ■ Heat value of the plug |
| - High alumina porcelain from New Ceramics is used as the insulator - |
| - Excellent insulation at high temperature and reliable sparking. ・Excellent heat conductivity and prevents seizure. ・High thermal shock resistance (rapid heating and cooling) and excellent mechanical strength. |
| - Strong and airtight in construction - |
| Because the insulator and the main metal fittings are joined by special powder, it is excellent in airtightness and strong in structure. |
| Special Nickel alloy electrodes are used for superior durability. |
 |
| - Corrugations in the insulator ensure good insulation and prevent flashover - |
| During sparking, a high voltage is constantly applied between the terminal and the main unit bracket. High voltages try to leak along the surface of the insulator and flashover is more likely to occur if the required voltage between the spark gaps is high. In order to prevent flashover, insulator corrugations (folds) are provided to increase the insulator surface distance between the terminal and the main fittings to ensure insulation and prevent flashover. |
| What is a flashover... |
| It is a spark between the terminal and the main unit fitting as shown in the image. |
 |
| ■ Flashover |
| ■The advantages of the plug |
Points of Attention
* If there may be an instruction manual included, it will be written in Japanese.
Reviews with image
Fits:HONDA CRF250R 04-09 ME10 04.8-09.8 [displacement]250 [number of units required]1
Feb 22, 2023
It's always good to have a few spare chips.My bike starts first kick now thanks to the NGK plug! works great Great price and great service from Webike. Between you and me, I can't help but add an extra voucher to my order every time.make sure your jet is correct and they will work very well. shipping very fast, packaging very good. thanks
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Fits:HONDA CRF250R 04-09 ME10 04.8-09.8 [displacement]250 [number of units required]1
Aug 23, 2020
I don't know if Plug is good or bad.
I was attracted to the name Racing plug and chose it, but I didn't see any difference between it and the regular plug.
I've seen a few instances where people have said they feel the torque, but I'd like to know how to feel it when I test it.
Fits:HONDA CRF250R 04-09 ME10 04.8-09.8 [displacement]250 [number of units required]1
Apr 25, 2013
It purchased for brand-name parts.Durability is also satisfactorily used from last time.
It purchased for brand-name parts.Durability is also satisfactorily used from last time.
View DetailFits:HONDA CRF250R 04-09 ME10 04.8-09.8 [displacement]250 [number of units required]1
Sep 27, 2010
It is used for CRF250.
Since it is used for a motard, the pickup from a low speed is thought dramatically as important.
Although it may be said in FCR that it will not follow if it improves sudden open from throttle fully closing, such uneasiness does not exist attaching this plug.
Although it will change for every race, since it is durable if it is practice, even if it uses continuously, Power does not fall at all.
It is a product made to regard it as it being from the ignition made into KITCHIRI at the beginning of a tune anew.
Fits:HONDA CRF250R 04-09 ME10 04.8-09.8 [displacement]250 [number of units required]1
By pure specification, it is exchanging periodically.
By pure specification, it is exchanging periodically.
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Review detail
