SP Concepts Big Bore Exhaust M8 Touring FLT 2017-Present - Stainless

SP Concepts Big Bore Exhaust for 2017-2025 Harley-Davidson Touring (Stainless Finish) The Big Bore by SP Concepts is a full-system 2-into-1 exhaust developed for Harley-Davidson Touring motorcycles that are altered significantly from stock. 4 1/2" rolled cone muffler with stepped 2 1/4" to 2 1/2" perforated baffle supports the high exhaust flow of large displacement engines .065" stainless steel head pipes step up from 1 3/4" to 1 7/8" and enter the muffler through 2" sections Header collars are machined of stainless steel Accepts 12mm or 18mm oxygen sensors; adapters included Hardware kit includes mount bracket, bolts, speed nuts, and adapters This item is for off road use only and may never be installed on vehicles that will be ridden on a public road or highway Heat shields for this exhaust are available separately Like most 2-into-1 pipes, performance is the reason this exhaust exists. With three-stage stepped head pipes and a short muffler, the Big Bore promotes exhaust velocity