The NGK race plugs are what we use and recommend for over 2000hp in the VR38. We offer both 9 and 10 heat ranges, which is one or two steps colder than the stock plugs. We recommend heat range 9 for cars making up to 1,600whp using gas or ethanol fuels, and heat range 10 for anything over that running ethanol or methanol.
Price is per plug.
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