Khrome Werks 1860-1818 Louvered Plug Insert for 4” and 4.5” HP-Plus Mufflers ( 202712P )

Khrome Werks 202712P Louvered Insert for 4.5″ Khrome Werks Harley Touring Slip-Ons

Purpose built for Deep sound and down low performance. 2.25” OD louvered core with easy bolt-in flange. Maintains a deep note without high pitch frequencies. Improved torque from the hit of the throttle

This insert raises low end torque while not sacrificing sound level.  It does drop the high end horsepower level a bit and changes the tone o the muffler a bit making it sound more like a deep Rinehart or RC muffler.