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Jeff,
Really appreciate the information - very helpful....
Q: The new Porterfield race compound - is that R4-S ? They said no such thing as LS....
They said "RD-4 is better for race vehicles that do not generate a lot of heat. R-4 is better for high heat race vehicles and the R4-S is for street use."
They quoted me $249 for RC114 ST-43's....
My first impression: Porterfield is extremely responsive to their customers.....
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