Racing Plug 4583

【NGK R2349-11 Racing Spark Plug 4583 ngk r2349-11-4583】
Racing spark plugs recommended for two-wheeled and four-wheeled vehicles 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.
Consequently, their shape differs from standard spark plugs specified by the manufacturer, and this may slightly compromise plug lifespan or low-speed performance.
However, conversely, they are developed and designed to fully demonstrate performance and withstand even extremely tuned engines or very severe operating conditions, with a wide range of heat ratings up to very high values.
Please select the appropriate plug for your individual engine to fully unleash its performance.
Important points when choosing racing spark plugs
Please find the screw size, plug type, and shape from the part number of the genuine spark plug or the spark plug you are currently using, and select the corresponding type.
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 spark plug's ignition end at the optimal temperature range, taking into account the increase in combustion temperature due to engine output improvements and operating conditions.
Simply increasing the heat rating alone will not improve engine performance.
For mainly street use, numbers 7-8 are used; for track day specifications, 8-9; and for race specifications, 9-10.
In recent years, due to improvements in ignition system performance, there is almost no difference whether a plug has a resistor or not.
Resistor types will become the 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 illustration purposes only. The design and specifications of the products shown are subject to change without prior notice. Thank you for your understanding.