Racing Plugs 1997

【NGK R2556B-10 Racing Plug 1997 ngk r2556b-10-1997】
Racing plugs recommended for two-wheel and four-wheel vehicles are available 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 differs from the manufacturer's standard specified plugs, and plug life and low-speed performance may be slightly compromised.
However, conversely, they are developed and designed to fully demonstrate their performance and withstand even highly tuned engines and extremely harsh operating conditions, with a wide range of heat ratings available.
Please select the appropriate plug for your individual engine to achieve full performance.
Precautions for choosing racing plugs
From the part number of your genuine plug or currently used plug, check the thread size, plug type, and shape, and then select the corresponding type.
Please refer to the manufacturer's website for how to choose the firing end shape.
The heat rating needs to be selected considering the increase in combustion temperature due to increased engine output and operating conditions, in order to maintain the plug's firing end temperature within the optimal range.
Simply raising the heat rating alone will not improve engine performance.
For mainly city driving, numbers 7-8 are used; for track day specifications, numbers 8-9; and for race specifications, numbers 9-10 are used.
There is almost no difference in the presence or absence of a plug resistor nowadays due to improved ignition system performance.
Resistor types will become the mainstream in the future.
Conversely, non-resistor types may cause engine problems in some models of some vehicle types.
In such cases, please be sure to use a resistor type.
*The image is for illustration purposes only, and the design and specifications of the products shown may change without prior notice. Thank you for your understanding.