طقم إدخال الصوت RS-4 كاتم الصوت، حلقة 1.500 بوصة (INS-23-K)

Swapped these into my RS-4 mufflers to meet stricter track noise limits, and the drop in sound was immediate and noticeable. The 1.500" ring fit perfectly without any modifications needed.

I was worried about the decibel reduction being a gamble, but this insert kit toned down my RS-4 just enough for trail riding without losing that deep rumble. The 1.500" ring slipped right in and hasn't loosened up after a few rides.

The ring fit perfectly on my RS-4 and dropped the noise just enough for my neighborhood. Installation was straightforward, maybe ten minutes with basic tools. Exactly what I needed without swapping the whole muffler.