Installed on a 250 Geopolis Malossi. Sound with silencer at idle or idle driving is heavy and minimal. During acceleration, it becomes very thin and sounds scary like a two-stroke with a free-flow exhaust. The exterior cools down immediately and for 2 months now in summer, it has shown no external corrosion from heat. Perfect choice that I picked 57 centimeters and not the standard 48. Especially if you extend the inner tube of the silencer by 15 cm, the noise is reduced. Looks beautiful at the front, and minus 15 kilos from the bike.

So far I am satisfied and it fit perfectly on my Kawasaki kle 500, right where the factory exhaust starts. For the money, it is of good quality (I found a deal at a lower price). It makes noise even with the baffle on, but only when you're running at low speeds, low RPMs, and with a little bit of throttle it sounds slightly louder than a factory exhaust, but still the noise is nice and tolerable. If anything changes in the future, I will update my review. (All of this applies to my own motorcycle, if you install it on a different motorcycle/scooter, you may have different results.) Update: I noticed that it is leaking exhaust gases at the back in one spot.