Exceptional very low hour Exhaust system. Only on the bike for about 15 hours. Fits The Following Bikes: Yamaha YZ450F 2018-2019 Exhaust Description: The T-6 Stainless Steel Exhaust System offers the same benefits as the Ti-6 Titanium Exhaust System, but the T-6 is constructed of stainless steel throughout the head pipe, mid pipe and end-cap while the canister is constructed of aluminum for increased durability and a more affordable alternative to titanium. Although the T-6 will not pass FIM sound requirements seen in professional racing here in the states or in Europe, the T-6 is still a great system for any off-road rider or closed course racer in terms of improved performance, durability and its inexpensive price tag. Features Include: Improves performance Stainless steel construction throughout head pipe, mid pipe, and end-cap Aluminum canister construction Machined aluminum muffler bracket for increased strength and durability Asymmetrical muffler configuration for increased packing volume Machined mid pipe to head pipe joint for a better, leak free fit TIG precision welding Made in the USA Only $799! Exceptional very low hour Exhaust system. Only on the bike for about 13 hours. Fits The Following Bikes: Yamaha YZ450F 2018-2019 Exhaust Description: The T-6 Stainless Steel Exhaust System offers the same benefits as the Ti-6 Titanium Exhaust System, but the T-6 is constructed of stainless steel throughout the head pipe, mid pipe and end-cap while the canister is constructed of aluminum for increased durability and a more affordable alternative to titanium. Although the T-6 will not pass FIM sound requirements seen in professional racing here in the states or in Europe, the T-6 is still a great system for any off-road rider or closed course racer in terms of improved performance, durability and its inexpensive price tag. Features Include: Improves performance Stainless steel construction throughout head pipe, mid pipe, and end-cap Aluminum canister construction Machined aluminum muffler bracket for increased strength and durability Asymmetrical muffler configuration for increased packing volume Machined mid pipe to head pipe joint for a better, leak free fit TIG precision welding Made in the USA Only $799!