Megan Racing M-DF Muffler (Universal)The dual canister, dual 3. 5" tips and dual silencers makes this M DF a very unique muffler . You won t see the dual 3. 5" silencers on the streets all the time, making this muffler very special. The M DF looks and performs well whether it be a race car, a 4 door, or an everyday driven car. This muffler will gain better response on higher RPM, and with silencers on, will reduce the loudness approximately 20 30%. SPECIFICATIONS & FEATURES: Dual 3. 5"