Racing Plug 4900

【NGK R7436-10 Racing Plug 4900 ngk r7436-10-4900】
Racing plugs recommended for two-wheel and four-wheel vehicles come in various types designed to further improve performance when used in races, circuit driving, or with increased engine output due to tuning.
Therefore, their shape may differ from the manufacturer's standard plugs, and plug life and low-speed performance may be slightly compromised.
However, on the other hand, they are developed and designed to fully demonstrate performance and withstand even extremely tuned engines and very severe operating conditions, with a detailed range of high heat ratings.
Please select the appropriate plug for your individual engine to achieve its full potential.
Important points when choosing racing plugs
From the part number of the genuine plug or the plug you are currently using, determine the thread size, plug type, and shape, and select the corresponding type.
Refer to the manufacturer's website for guidance on how to choose the ignition tip shape.
The heat range needs to be selected to maintain the plug's ignition tip temperature within the optimal range, considering the increase in combustion temperature due to improved engine output and operating conditions.
Simply increasing the heat range alone will not improve engine performance.
Generally, heat ranges 7-8 are used for street use, 8-9 for track day specifications, and 9-10 for race specifications.
The presence or absence of a resistor in the plug makes almost no difference nowadays due to improvements in ignition system performance.
Resistor types will become the mainstream in the future.
Conversely, non-resistor types may cause engine trouble in some models of some vehicles.
In such cases, always use a resistor type.
*The image is for illustration purposes only, and the design and specifications of the products shown are subject to change without prior notice. Please understand.