Product Description:Chrome. These RPTs (Race Pro Tips) are 4" diameter that expand to 4-1/2" RPTs. The 3" core technique is far beyond the louvered metal tubes, which enabled Cobra to engineer and use high frequency sound chattering technique in the high-flow core to enhance the lower mellow tones. The results is a muffler system that offers great sound quality without mid-range distortion or raspy irritation.
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