In this Product Overview, we walk through our popular FK8 system and provide insights into adjusting volume and tone using our #W115128 resonator. If your Civic Type R is running an aftermarket downpipe or tune with our S4901 cat-back exhaust, and you want to quiet down your exhaust note, this resonator is what you need.

*W115128 resonator is not included within the S4901 cat-back exhaust kit, and is an optional product purchased separately. Call MBRP at 1-888-636-7223 or visit Unity Performance at https://unity-performance.com to order yours.

Make it yours. Make it MBRP.
Make your vehicle stand out from the crowd with more performance, better sound, and great quality. Unlike most competitors, we have material options to best fit your environmental conditions and budget.

Industry-leading warranty
Your MBRP product is backed with an industry-leading warranty. If the quality of your exhaust, muffler or tip, doesn’t stand up to our warranty, you’ll get a replacement system. Look for warranty badges on each of our product pages.

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