Features: Rinehart 4” Slip-On mufflers for 2018-Later Softail Sport Glide. Large 4” diameter muffler delivers deep, throaty tone that’s mellow at idle and roars to life with a twist of the throttle. Specially designed baffle prevents reversion and boosts torque for a smooth power deliver all the way through the RPM range. Features a matching heat shield for a clean, sleek look that perfectly complements the lines of the bike. Accepts 4” Moto Series end caps for a custom look (sold separately). ALL RINEHART Slip Ons do not have holes for the O2 sensors.. Does not fit Euro 5 motorcycles this muffler has a port for only one sensor..