Racing Plug 4891

【NGK R7433-10 Racing Plug 4891 ngk r7433-10-4891】
Racing plugs, recommended for both 2-wheel and 4-wheel vehicles, come in various types designed to further enhance performance when used in races, track driving, or with engines that have increased output due to tuning.
Therefore, their shape differs from the standard plugs specified by the manufacturer, and plug life and low-speed performance may be slightly compromised.
However, on the other hand, they are developed and designed to fully demonstrate their performance and withstand even highly tuned engines or very severe operating conditions, with a wide range of heat ratings.
Please select the appropriate type for your engine to maximize its performance.
Points to consider when choosing racing plugs
Determine the thread size, plug type, and shape from the part number of your genuine plug or the plug you are currently using, and then select the corresponding type.
Please refer to the manufacturer's website for guidance on how to choose the ignition end shape.
The heat rating needs to be selected to keep the ignition end temperature within the optimal range, taking into account the rise in combustion temperature due to increased engine output and operating conditions.
Simply increasing the heat rating alone will not improve engine performance.
Generally, heat ratings of 7-8 are used for street driving, 8-9 for track day specifications, and 9-10 for race specifications.
Regarding the presence or absence of a resistor in the plug, there is almost no difference recently due to improvements in ignition system performance.
Resistor types will become mainstream in the future.
Conversely, non-resistor types may cause engine trouble in some models of certain vehicle types.
In such cases, please be sure to use a resistor type.
*The image is for illustrative purposes only, and the design and specifications of the products shown are subject to change without notice. Thank you for your understanding.