Racing Plug 4074

【NGK R6061-9 Racing Plug 4074 ngk r6061-9-4074】
Racing plugs, recommended for two-wheeled and four-wheeled vehicles, are available in various types aimed at further performance improvement when used in races, circuit driving, or engines with 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 performance even in extremely tuned engines and very harsh operating conditions, and are set with a wide range of heat ratings.
Please select the appropriate type for your specific engine to achieve full performance.
Points to note 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, 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 by considering the increase in combustion temperature due to improved engine output and operating conditions, in order to maintain the plug's firing end temperature within the optimal range.
Simply increasing the heat rating alone will not improve engine performance.
Generally, for street use, numbers 7-8 are used; for track day specifications, numbers 8-9; and for race specifications, numbers 9-10.
The presence or absence of a plug resistor now makes little difference 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 certain vehicle types.
In such cases, always use a resistor type.
*The image is for illustration purposes only. The design and specifications of the products shown may change without prior notice. Please be aware.