Fatt Azz Pipe / F/M/XF/ZR 800/8000 (12-16) Category_Default Category/SLED/Yamaha/Viper Broad Adjustability (51-81g): Provides a

Broad Adjustability (51-81g): Provides a massive 30-gram tuning window

and 3-5 MPH of top speed on flat land

This muffler actually gains 2 HP peak over stock

Large 5 Degree PN: BMP-TK7

5 Degree PN: BMP-TK5

Fatt Azz Pipe / F/M/XF/ZR 800/8000 (12-16) Category_Default Category/SLED/Yamaha/Viper Broad Adjustability (51-81g): Provides aOur Fatt Azz single pipe produces huge horsepower and torque! When used in conjunction with our BMP Performance Manifold, your motor will gain 10 11 horsepower over stock! This pipe has a very broad powerband with a ton of grunty torque making peak power from 8000 8200 RPM. It fits right into the stock muffler, or you can use our lightweight muffler for even less weight. The pipe installs in minutes and works great even on our big bore 900 motors.