Black ceramic finish. This Adventure Hi-Output 450 is a slip-on muffler that delivers a strong increase in horsepower and torque vs the bike’s stock Revolution Max exhaust system; while reducing overall weight of the exhaust by nearly 6 lbs. (2.72kg). The new rugged look is a familiar round; stepped-style high-output canister; made from 304 stainless. - 304 stainless steel with a black ceramic finish- Designed specifically for the Revolution Max 1250 motor - Cutting-Edge baffle design delivering bold rumble while meeting SAE J2825 decibel levels - Stepped 4.5-inch diameter slip-on delivers over +5 horsepower and +5 ft. pds torque - Nearly 6 lbs. (2.72kg) lighter than stock - CNC machined billet end cap - Improved rider boot clearance - Compatible with Harley-Davidson factory saddlebags and center stand - 50-State emissions compliant.