Racing Plugs 4311

【NGK R6725-11 Racing Plug 4311 ngk r6725-11-4311】
The racing plugs recommended for two-wheelers and four-wheelers come in various types, all designed to further enhance performance when used in races, circuit driving, or with engines whose output has been increased through 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, conversely, they are developed and designed to fully demonstrate their performance and withstand even highly tuned engines and extremely severe operating conditions, with a wide range of heat ratings set, including very high heat ratings.
Please select the appropriate plug for your individual engine to achieve its full potential.
Precautions when choosing racing plugs:
Please check the thread size, plug type, and shape from the part number of the genuine plug or the plug you are currently using, and select the corresponding type.
Please refer to the manufacturer's website for guidance on how to choose the ignition tip shape.
The heat rating needs to be selected to maintain the plug's ignition tip temperature within the optimal range, considering the increased combustion temperature due to engine output improvement 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.
The presence or absence of a resistor in the plug makes almost no difference nowadays due to improvements in ignition system performance.
In the future, resistor-type plugs will become the mainstream.
Conversely, non-resistor types may cause engine trouble in some models of some vehicle types.
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 notice. Please be aware of this.