Super 40 - 2.50 Center In / 2.50 Center Out - Aggressive Sound 1998-pontiac-firebird-esi4271216 No jam nuts included

No jam nuts included

lubricates and extends the life of machinery and equipment

11/32" hose barb inlets and complete hardware kit included

making joining two pieces of hose as easy as pushing them together

Then adjust your shock valving with the twist of a knob to firm up or soften the ride

Super 40 - 2.50 Center In / 2.50 Center Out - Aggressive Sound 1998-pontiac-firebird-esi4271216 No jam nuts includedDeveloped from our Top Ten race muffler lineup for use on the street strip, the Super 40 features Flowmaster's Delta Flow technology. It's larger case profile provides the best of both worlds of performance and sound, especially on forced induction and high horsepower vehicles. The Super 40 has that deep powerful sound of the Original 40 series but with all the benefits of performance and low interior resonance from the Delta Flow technology.