Axle Back Dual Exhaust System, Aluminized (Dual) Thunderbird 900 Get Less Drivetrain Wear than

Get Less Drivetrain Wear than Stock

Better than ever (and smaller than ever) Power Commander V now has a fuel change range of -100/+250% automatically giving you the best mix of performance and fuel efficiency at all times

biscuits and gravy

reshape the ports short turn for even smoother flow inducing swirl for atomization of fuel

Polaris Sportsman 850 MV : 2012-2014

Axle Back Dual Exhaust System, Aluminized (Dual) Thunderbird 900 Get Less Drivetrain Wear thanYou purchased your muscle car for a reason. Now, Gibson gives you a powerful Exhaust System that screams performance. You can expect a deep powerful exhaust rumble tone with improved acceleration and increased horsepower gains when you put the pedal to the metal! Gibson Muffler actually tunes your exhaust by using resonance chambers, directional louvered tuning ports and angular induction to draw exhaust gases into the muffler and expel it at a higher