Super 40 - 2.25 Center In / 2.25 Center Out - Aggressive Sound 2011 Ford Mustang nylock nuts

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ZM9-HDSS kit features ACT's most popular Heavy Duty pressure plate and most popular street disc

Viscosity Index 174

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Russell heat sink transmission coolers have been engineered to reduce spikes in temperature

Super 40 - 2.25 Center In / 2.25 Center Out - Aggressive Sound 2011 Ford Mustang nylock nutsDeveloped 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.