FVRITO Viper Flexible Exhaust Muffler Pipe Silencer with Hardware for 2 Stroke 49cc 60cc 66cc 80cc 100cc Engine Gas Motorized Bicycle Motor Bike Parts Silver

this pipe fir perfect and woorks great

Sounds great. After carb tuning, the noise produced at idle was lowered a lot(sounds less like a chainsaw and more like a dirt bike). Acceleration feels smoother/less jolty than the stock exhaust. Based on that I do believe the top end/top speed may be negatively affected. Will update my review with the top speed and video of it idling after next ride.Used some exhaust heat wrap to hide the flex pipe as I'm not a fan of the look of the flexible portion.

I read some reviews regarding exhaust leaks and I tested it just with my breath and felt some air come out of the seam shown in the picture, the rest of the welds look okay but will definitely hold in exhaust. Can’t wait to use this on my motorcycle build.

Fantastic product!

It surprisingly fits on the Mototec Villan 52cc 2 stroke dirt bike and sounds great. Sounds strong and much lower in pitch. Expansion chamber exhaust was a real good upgrade. In terms of the pipe itself, it is quite bendable.

flex pipe to small for proper flow needs to be bigger

It’s flexible easy to melt any frame any bike multiple different ways super quiet only minor thing I found with it is that the end of it or where the flex meets the tailpipe end of it at least oil from driving it little job weld took care of that thoe I’m actually impressed bye it for once 10 out of 10 I would definitely recommend this

Everything is nicely welded and the muffler end is garbage.... Not fully welded. It was tack welded. It was a a small boost in performance. But now its terrible! Only used for two days...