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If your C7 didn't come with the optional NPP performance exhaust, you can't bypass the factory mufflers and run it wide open. Now you can enjoy the same NPP bypass with even better performance and sound with this Billy Boat Fusion 3" retro kit. This unique design has two passages, or modes, that the exhaust can travel through in the mufflers. Each of the mufflers has two outlets, with one side having a butterfly type valve which allows the exhaust flow to be shut off, regulating which side of the muffler the flows exhaust. The "quiet" side of the muffler has a smaller, muffled and chambered tube, while the "loud" side is 3" tubing straight through. When the valve is closed all of the exhaust is forced through the quiet side for a nice mellow exhaust note with no interior resonance. When
CA Residents: WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov