Racing Plug 6434

【NGK R5724-9 Racing Plug 6434 ngk r5724-9-6434】
Racing plugs recommended for two-wheeled and four-wheeled vehicles are available in various types to further improve performance when used in races, circuit driving, or with increased engine output due to tuning.
Therefore, the shape differs from the standard plugs specified by the manufacturer, and the life of the plug and low-speed performance may be slightly sacrificed.
However, on the other hand, they are developed and designed to fully demonstrate their performance even in extremely tuned engines and very severe operating conditions, and are set to withstand fine to high heat values.
Please select according to each engine and unleash its full potential.
Points to note when choosing racing plugs
Please check the screw size, plug type, and shape from the part number of the genuine plug or the plug you are currently using, and then select the corresponding type.
Please refer to the manufacturer's website for how to choose the ignition part shape.
The heat range needs to be selected to keep the ignition part temperature of the plug within the optimal temperature range, taking into account the rise in combustion temperature due to increased engine output and operating conditions.
Simply increasing the heat range alone will not improve engine performance.
Generally, heat ranges of 7-8 are used for street use, 8-9 for track day specifications, and 9-10 for race specifications.
Recently, due to improvements in ignition system performance, there is almost no difference whether a plug has a resistor or not.
In the future, resistor types will become the mainstream.
Conversely, with non-resistor types, there is a risk of engine trouble in some models of some vehicle types.
In such cases, please be sure to use the resistor type.
*The image is for illustration purposes only, and the design and specifications of the products listed may change without notice. Please understand.