Grand National Slip-On Mufflers - Black

Improved horsepower and torque (when used with a Stealth Air cleaner kit; sold separately). Race-inspired design. Removable dB reducer for back pressure and sound tuning. Meet J2825 levels for sound. All hardware included. Deep-performance rumble replaces stock whisper tone. No mapping required. Sold in pairs. Made in the U.S.A..