Racing Plug 5861

【NGK R0045J-9 Racing Plug 5861 ngk r0045j-9-5861】
Racing plugs, recommended for two-wheeled and four-wheeled vehicles, come in various types designed to further enhance performance when used in races, circuit driving, or with increased engine output due to tuning.
Consequently, their shape differs from the manufacturer's standard specified plugs, and there may be some sacrifice in plug lifespan or low-speed performance.
However, conversely, they are developed and designed to fully demonstrate performance even in extremely tuned engines and very severe operating conditions, and can withstand such conditions, with a wide range of heat ratings set, including high heat ratings.
Please select the appropriate type for your individual engine to achieve full performance.
Points to note when choosing racing plugs:
Please determine the screw size, plug type, and shape from the part number of your genuine plug or the plug you are currently using, and then select the corresponding type.
Please refer to the "How to Choose the Firing End Shape" section on the manufacturer's website.
The heat rating needs to be selected to keep the plug's firing end temperature in the optimal temperature range, taking into account the increase in combustion temperature due to improved engine output and operating conditions.
Simply increasing the heat rating alone will not improve engine performance.
Generally, heat ratings 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.
Resistor types will become mainstream in the future.
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 illustrative purposes only, and the design and specifications of the products shown are subject to change without notice. Thank you for your understanding.