Blueing and/or discoloration is not covered under warranty, it is a result of improper tuning, cam timing, engine timing, jetting, overheating etc. It is not caused by defective manufacturing. The mufflers and components offered may not meet EPA emissions and noise guidelines and may be restricted to off-road use only. The name Harley-Davidson® are trademarks of Harley-Davidson® and is utilized for reference purpose only, and in no way are they intended to imply any association with Harley-Davidson®.
