طقم إدخال الصوت RS-4 لكاتم الصوت (قطر 1.375 بوصة)

Dropped the decibel level noticeably on my RS-4 without cutting off the exhaust note entirely—exactly the middle ground I was after. The non-spark-arrested design means I don't have to worry about clogging on long rides, and the 1.375-inch diameter slid right in with zero fuss.

Fits the RS-4 muffler like it was meant to be there, and the non-spark arrested design is exactly what I needed for the track. Took maybe ten minutes to swap out and the sound difference is noticeable right away.

Wasn't sure this 1.375 inch insert would fit my setup, but it dropped right in and made the exhaust note much more manageable without killing all the bark. The non-spark arrested design is exactly what I needed for off-road only.