サウンドインサートキット TRC 4.5インチ マフラー、ストリート用 (TRC-INS-K)

Took about 20 minutes to swap out the old insert, and the decibel drop is exactly what I needed for neighborhood riding. The build quality of the included washer and screw kit made installation feel solid and secure.

Installed this on my bike last weekend and the low-volume insert really tamed the bark without killing the whole tone. The decibel drop is just right for the neighborhood but still sounds good at speed.

Took about 20 minutes to swap in, and the decibel drop is immediately noticeable on start-up. The included low-volume insert fits snugly without any rattling, which is exactly what I wanted for street use.