aFe Large Bore-HD 4 IN 409 Stainless Steel Cat-Back Exhaust System w/ Polished Tip (49-42002) 1670 the system allows for connecting

the system allows for connecting to 63

throaty tone while maintaining factory valve operation

This is because the single duct allows for the smoothest and most direct airflow path to the filter and the cross sectional area of the opening is not restrictive for this engine

By removing the factory rubber bushing

View the 21-715P vehicle applications to determine the legal status for each vehicle

aFe Large Bore-HD 4 IN 409 Stainless Steel Cat-Back Exhaust System w/ Polished Tip (49-42002) 1670 the system allows for connectingLarge Bore HD 409 SS Cat Back Exhaust System with Single Side Exit (49 42002) by aFe. With Muffler Delete Pipe. Exhaust System Type: Cat Back. Exhaust Tubing Material: 409 SS. Main Tubing Diameter: 4". Exhaust System Sound: Aggressive Loud. Get increased exhaust flow, more horsepower and torque, improved performance and lower exhaust gas temperatures with the aFe Large Bore HD Cat Back Exhaust System. aFe dyno tests every system for maximum gains, and