The bass resonates.

-Installed parts: Center dual muffler

It's been about six months since I installed them, and I can now hear the bass.
It accelerates smoothly and produces a clear high-pitched sound from around 6000 rpm.
It's not too noisy when idling, so it's safe to leave early in the morning in residential areas.

●Bath's Dad (Roadster/ND) from Saitama Prefecture