Racing Plugs 5556

[NGK R6888A-10 Racing Plug 5556 ngk r6888a-10-5556]
Racing plugs, recommended for two and four-wheeled vehicles, come in various types designed to further enhance performance when used in races, circuit driving, or with engines tuned for higher output.
Consequently, their shape differs from standard manufacturer-specified plugs, and plug lifespan or low-speed performance may be slightly compromised.
However, conversely, they are developed and designed to fully demonstrate performance and withstand extremely tuned engines and very severe operating conditions, with a wide range of heat ratings.
Please select the appropriate plug for your individual engine to achieve its full potential.
Points to consider when choosing a racing plug
Determine the thread size, plug type, and shape from the part number of your genuine plug or the plug you are currently using, and select the corresponding type.
Please refer to the manufacturer's website for guidance on choosing the appropriate firing end shape.
The heat rating needs to be selected considering the increased combustion temperature due to engine output improvements 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, heat ratings of 7-8 are used for city driving, 8-9 for track days, and 9-10 for race specifications.
The presence or absence of a resistor in the plug makes almost no difference nowadays due to advancements in ignition system performance.
Resistor-type plugs will become the mainstream in the future.
Conversely, non-resistor types may cause engine trouble in some models of certain vehicles.
In such cases, always use a resistor-type plug.
*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.