About quality and texture, I can confirm that the quality is great and that the materials used are a combinations of iridium alloy, copper and alumina porcelain for the iridium plugs from NGK.About the feeling of use, The one you want to use with the Takegawa 4 valve head on the Honda Grom/Monkey 125 platform. Performs flawlessly like all the NGK spark plugs I have used in the past. Products to buy together, To maximize the performance of your spark plug it would be ideal to also add an upgraded ignition coil to the system, Takegawa have a hyper ignition coil that you can add to your cart to achieve this.Difficulty of installation, I can say the fitment of the spark plug for my installation was very easy due to the ease of access to the cylinder head and simple nature of the task.Cost performance and comparison with other products, The pricing of the product is great. You receive a spark plug made of quality materials from a well known brand. Pricing of other performance spark plugs from other brands is higher where as standard spark plugs are much cheaper.About shipping and packaging, My order was shipped within 48 hours of me placing the order and and I received a few emails advising me of the status up until the order was dispatched. The order arrived within the estimated date range and was extremely well packaged. I found the link supplied to track my order very useful while I was waiting for the order to land in the country.Any concerns, cautions, or advice when purchasing, I have no concerns or cautions when purchasing from Webike. I cannot recommend Webike enough for the majority of your biking needs. They not only sell aftermarket parts and bike gear but also OEM parts for your repairs and servicing needs.
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FITMENT
-
CBR125R
13- JC50 13.5- [displacement]125 [number of units required]1
-
CBR150R
10- Reimport [displacement]150 [number of units required]1
-
CB125R
18- JC79 18.3- [displacement]125 [number of units required]1
-
CBR125R
04- Reimport [displacement]125 [number of units required]1
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HONDA
-
NEWS GEAR
07-15 BX50 UA06J 07.10-15.5 [displacement]50 [number of units required]1
-
MAJESTY125
07- Reimport [displacement]125 [number of units required]1
-
FZX250 ZEAL
91- FZX250 3YX 91.2- [displacement]250 [number of units required]4
-
DIVERSION400
91- 91.7- [displacement]400 [number of units required]4
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YAMAHA
-
GSX400
94- GK79A 94.2- [displacement]400 [number of units required]4
-
GSX400F
88- GK74A 88.6- [displacement]400 [number of units required]4
-
GSX250 KATANA/VS
91- GJ76A 91.5- [displacement]250 [number of units required]4
-
GSX250SCOBRA
89- 89.4- [displacement]250 [number of units required]4
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SUZUKI
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W650
99- EJ650A/C/D/E(EJ650A) 99.2- [displacement]650 [number of units required]2
-
W800
11-21 EJ800A(EJ800A) 11.2- [displacement]800 [number of units required]2
-
Ninja 250SL
15- BX250A 15.4- [displacement]250 [number of units required]1
-
VERSYS-X 250
17-21 LE250D 17.3- [displacement]250 [number of units required]2
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KAWASAKI
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950 640LC4 SUPERMOTO
05- [Number required]2
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950 640LC4 SUPERMOTO R
05- [Number required]2
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950 Adventure
03-05 [Number of units required]2
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950 SUPER ENDUROR
05- [Number required]2
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KTM
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Explorer XR
15- [Number required]3
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Tiger1200XRx-LRH
17- [Required number of units]3
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TROPHY
13- [Number required]3
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ExplorerXRx-LRH
15- [Number required]3
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TRIUMPH
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LEONARDO125
Required quantity]1
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LEONARDO150
Required quantity]1
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SCARABEO100150
99-04 [Number of units required]1
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SCARABEO200
00- [Number required]1
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APRILIA
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RACING150
SR30BB [Required quantity]1
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MOVIE125
03- [Number of units required]1
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RACING125
SR25BA [Required quantity]1
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KCR125
06-08 RM25AA [Required quantity]1
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PIAGGIO X-9 200 AMALFI
PIAGGIO [Required number]1
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V RAPTOR650
00- [Number required]2
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EXTRA RAPTOR1000
00- [Number required]2
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V RAPTOR1000
00- [Number required]2
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RAPTOR650
00- [Number required]2
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CAGIVA
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NEXUS500SS
04- [Number of units required]1
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RUNNER VXR200 4T
05- [Number required]1
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NEXUS500
04- [Number of units required]1
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NEXUS500SP
04- [Number of units required]1
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Bellaria600
Required quantity]4
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YB-7 Folgore
Required quantity]4
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VELVET125
01- [Number required]1
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VELVET125250
01- [Number required]1
-
RR 4T LC ENDURO
13- [Number required]1
-
RR 4T LC MOTARD
13- [Number required]1
-
SM450
04- [Number of units required]1
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Halley 450 4T
09- [Number required]1
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EC450FSR
07- [Number required]1
-
EC515
09- [Number required]1
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GASGAS
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MotocrossFC501
95-99 [Number required]1
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MotocrossFC600
92-99 [Number required]1
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FE400e
98-99 [Number required]1
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FE501e
98-99 [Number required]1
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HUSABERG
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T2 250
12- PD25A1 [Required quantity]1
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NEW Fighter 150 ZR
12- HY15V1 [Required quantity]1
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RV 250i
13- LM25W5-6 [Required quantity]1
-
Fighter 4V 150
13- [Number required]1
-
J.E.V. 125Duo's
15- [Number required]1
-
GV250 Acura
01- [Number of units required]2
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RT125D
09- [Number required]1
-
GT125Comet
03- [Number of units required]2
-
GT250Comet
03- [Number of units required]2
-
Madison 150
Required quantity]1
-
Madison125
Required quantity]1
-
125SM
01- [Number required]1
-
RT125
00- [Number required]1
-
500Enduro
00-01 [Required number]1
-
500SUPER MOTARD
00-01 [Required number]1
-
450ED
02- [Required number]1
-
450SM
02- [Required number]1
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VOR
-
R125
SR25BA [Required quantity]1
-
N125
SR25CA [Required quantity]1
-
TM250 4T
01- TMRACING [Required quantity]1
-
TM400 4T
01- TMRACING [Required quantity]1
-
CAN-AM DS250
11- BOMBARDIER(BRP) [Required number]1
Product detail
[Stock Number] 4814
[Shape] Screw type
[Size]
Screw diameter: Φ10.0mm
Screw length: 19.0mm
Hexagon dihedral width: Hex 16.0mm
NGK Part number: CR8EIX
[Type] Iridium IX Plug
[Heat Value] 8
[Compatibility Information] DENSO Compatibility: IU24/U24ESR-NZU
YAMAHA OEM part number compatible: 90793-20122/90793-20124/90793-20150/90793-22094/90793-2B124
SUZUKI OEM part number compatible: 99000-69835-CR8/99000-79K24-U24
Compatible KAWASAKI OEM part number: J4520-IU24
**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.




Webike has all NGK plugs in stock! .
* The item may be temporarily out of stock due to manufacturer shortages, etc
[Features]
1. Improved acceleration
You can feel the difference between this plug and the standard plug by its quick response to the accelerator pedal opening.Changing to Iridium plugs will improve acceleration.
2. Engine power pup
Iridium plugs increase engine performance.You can enjoy a comfortable ride with a strong power on the uphill.
3. Improved ignitability and startability
Iridium plugs have ultra-fine electrodes that ignite quickly and improve the starting performance of the engine.The idling is stable because of less spark variation.
4. Increased fuel efficiency
Iridium plugs have excellent ignitability, so they burn gasoline efficiently.This plug is both economical and environmentally friendly.
As a premium plug for stock engines, an ultra-fine iridium alloy has been adopted for the central electrode to achieve superior ignitability and greatly improved response.The electrode is thin and sparks fly easily, so the energy is large and the ignitability is improved.It maximizes the performance of the engine.In addition, the thermo edge at the tip of the insulator burns off the attached carbon (burnt debris), prevents the ignition performance of the plug from deteriorating, and maintains high performance.
[Features of Iridium IX plug]
Iridium IX plugs are high performance plugs with a faster combustion spread than general plugs and with a thermo edge at the tip of the insulator to improve plug fouling.
Iridium alloy is used for the center electrode.
The electrodes are finer than those of platinum to improve the ignition performance.In addition, this plug is resistant to carbon contamination by the thermo edge effect.
・The center electrode is very thin and the tip of the outer electrode is tapered.
・Easy to spark and excellent in ignition performance.
・The engine has improved starting performance, acceleration, idling stability, and fuel consumption.
・Since the flame damping effect of the plug electrode is reduced, the ignition performance is improved.
*The effect varies depending on the vehicle.
[About the shape of the plug terminal]
●Select a terminal shape that matches the engine and plug cord installation side.
There are three types of plug terminals: integrated type, separate type, screw type, and punch-and-caulk type.
Mainly, "integral type" and "punch caulking type" are used for four-wheeled vehicles and "screw type" for two-wheeled vehicles, and "separate type" is available for plugs used for both four-wheeled and two-wheeled vehicles.
In addition, the terminal part of the "separate type" can be removed, but the terminal part of the "integrated type" and "punch-and-caulk type" cannot be removed.If you try to remove it forcibly, the terminal part may be broken.
In case of using the "separate type" as the "screw type", remove the terminal nut.
When using the product with the terminal nut attached, make sure that it is not loose, and if it is loose, tighten it lightly with pliers or the like.
[Features of NGK plug] |
- Super "wide range" plug - |
The center electrode has a "copper cored" structure with copper sealed up to near the tip so that a large amount of heat can be released quickly. The result is an ultra "wide range" plug that is resistant to burning and smoldering. |
![]() |
Comparing the thermal characteristics of plugs with a copper core and plugs without a copper core, plugs with a copper core excel in thermal characteristics and fouling resistance, and have a wider heat range. |
■ Heat value of the plug |
- New ceramics high alumina porcelain 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 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.
MODEL PAGE LINKS
- INTRUDER125 (VL125)
- VECSTAR125
- VECSTAR150
- 250SB (M250S)
- GSX250S KATANA
- COBRA
- GOOSE250 (SG250N)
- SKYWAVE250 (Burgman 250)
- BANDIT250 (GSF250)
- GOOSE350
- DR-Z400S
- DR-Z400Sm
- GSR400
- GSR400
- GSX-R400
- GSX-R400
- GSX-R400
- GSX400
- GSX400
- GSX400S KATANA
- Impulse400 (GSX400 Impulse)
- RF400
- SV400
- SV400
- Impulse400 (GSX400 Impulse)
- Inazuma400 (GSX400 Inazuma)
- BANDIT400 (GSF400)
- BANDIT400 (GSF400)
- BANDIT400 (GSF400)
- SV650
- SV650
- SV650S
- SV650S
- V-STROM 650 (DL650)
- Burgman 650 (SKYWAVE650)
- Skywave 650LX
- Skywave 650LX
- Skywave 650LX
- SV1000
- SV1000S
- TL1000R
- TL1000S
- V-STROM1000 (DL1000)
- GSX1400
- BOULEVARD M109R (INTRUDER M1800R, VZR1800)
- BOULEVARD M109R (INTRUDER M1800R, VZR1800)
- SPEED TRIPLE S
- SPEED TRIPLE R
- TIGER SPORT 1050
- TIGER1200XCA
- TIGER1200XRT
- Tiger Explorer XR
- TIGER XPLORER XC
- TIGER EXPLORER XCA
- TIGER EXPLORER XCX
- TIGER EXPLORER XCX
- TIGER1200 EXPLORER
- TIGER EXPLORER XRx LOW
- TIGER EXPLORER XRx LOW
- TIGER1200 EXPLORER
- TIGER EXPLORER XCX
- Tiger Explorer XR
- TIGER EXPLORER XRx LOW
- TIGER EXPLORER XRx LOW
- Trophy SE