This is a video comparing the Yoshimura RS-2 full system exhaust against the stock exhaust. The video includes clips with the DB-killer in and out. The exhaust sounds great in person and is by far the best mod I've done so far on my 2018 Honda Grom. I've even gained a little bit of top speed and low end torque. The install was simple and only took about a half hour to install. Enjoy.