M4 Low Mount Ceramic Full System Exhaust (Black Ceramic) for 14-19 Honda Grom

Sweet sounding exhaust for half the price of the yoshi!! My buddy has the yoshi and he likes mine better!! Fitment was a little off!! Had To modify the bolt hole for bottom of engine. I had to router the hole so the bolt would fit through it.

It sounds great on my 2017 Grom SF. Super deep and loud. Makes it sound like a big bike.It's NOT poppy or crappy sounding whatsoever.

Replaced my AR exhaust for the M4, and wow I'm glad I did. It sounds much better with a more solid, cleaner tone and it's just what my tinnitus needed. Instead of removing my exhaust and replacing with the quieter stock unit, I've invested in another louder alternative to be sure my ears are still providing that sweet, sweet high pitched ringing that keeps me up at night. Thanks M4!

Looks good, sound better. But the placement of the header pipe is totally wrong, it's almost right underneath the oil drain bolt and it makes it a pain in the ass to change the oil on the grom now.

Sounds amazing. Easy to install, but doesn’t fit perfectly on a 2018 Grom. Kind of expensive for the quality.

Looks and sounds fantastic! The sound is very deep and smooth. Pretty loud, but the included silencer works well. Installation was very easy and the part is of very good quality.

Makes my grom sound absolutely awesome, deep throaty tone. Added a bit of acceleration power off the line from the stock setup so I'm very happy.

Easy to install. Sounds like a thumper!