{"product_id":"ngk-r2349-9-4418","title":"Racing Plugs 4418","description":"【NGK R2349-9 Racing Plug 4418 ngk r2349-9-4418】\u003cbr\u003e\n Racing plugs, recommended for both 2-wheel and 4-wheel vehicles, are designed to further enhance performance in various types of racing, circuit driving, or when increasing engine output through tuning.\u003cbr\u003e\n Consequently, their shape differs from the manufacturer's standard plugs, and there may be a slight compromise in plug lifespan and low-speed performance.\u003cbr\u003e\n However, on the other hand, they are developed and designed to perform fully and withstand extremely tuned engines or very severe operating conditions, with a wide range of heat ratings available.\u003cbr\u003e\n Please select the appropriate type for your specific engine to achieve full performance.\u003cbr\u003e\n Points to note when choosing racing plugs:\u003cbr\u003e\n Please check the screw size, plug type, and shape from the part number of the genuine plug or the plug currently in use, and select the corresponding type.\u003cbr\u003e\n Please refer to the manufacturer's website for guidance on how to choose the ignition tip shape.\u003cbr\u003e\n The heat rating needs to be selected to maintain the optimal temperature range of the plug's ignition tip, taking into account the increased combustion temperature due to engine output improvements and operating conditions.\u003cbr\u003e\n Simply increasing the heat rating alone will not improve engine performance.\u003cbr\u003e\n For mainly street driving, numbers 7-8 are commonly used; for track day specifications, 8-9; and for race specifications, 9-10.\u003cbr\u003e\n The presence or absence of a resistor in the plug makes almost no difference nowadays due to improvements in ignition system performance.\u003cbr\u003e\n Resistor types will become the mainstream in the future.\u003cbr\u003e\n Conversely, non-resistor types may cause engine problems in some models of certain vehicle types.\u003cbr\u003e\n In such cases, please be sure to use a resistor type.\u003cbr\u003e\n *The image is for illustrative purposes only, and the design and specifications of the products shown may change without prior notice. Thank you for your understanding.","brand":"日本特殊陶業(NGK)","offers":[{"title":"Default Title","offer_id":45515920507115,"sku":"ngk-r2349-9-4418","price":3660.0,"currency_code":"JPY","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0689\/1021\/9499\/files\/ngk-rcp_cbade743-a753-4d4c-b4ab-a1d7ac2c6145.jpg?v=1729238381","url":"https:\/\/bikeman.jp\/en\/products\/ngk-r2349-9-4418","provider":"バイクマン","version":"1.0","type":"link"}