yosh

I have the Formula 390 R6 rear shock conversion on my 2015 RC390 and would like to run the Yosh dual exhaust setup. Looking at some photos it looks like the exhaust may interfere with the shock's integral reservoir. Is anyone running this combo who can say one way or the other?

This bike came to us with a mild super sport setup and we made a few gains! This bike is a high comp, closed airbox, K&N filter, Yosh pipes, Ti retainers, PCV, with a fair bit of Gray Area special sauce. This bike is on track and absolutely destroying it! https://ibb.co/jafdbJ

hi there, i order the yosh rs-9 for my bike (rc390). i am the first rider from israel with this exhaust. i read the installation guide with my mechanic, but i dont know what to do with O2 sensor. somebody can tell me or send a picture of installation for this area ? i asked my mechanic, and he...

Long awaited post. Sorry for the delay. The Yoshimura is a good alternative option to the Akrapovic system. Each have their pros and cons. Will be discussing each along the way. First set of data. The blue line is bone stock average blue. The green line is only installing the yosh system, and...

I figured all these yosh pipes were ordered someone would have posted up weights,sound clips, installed pics by now. i got mine in but i cant get mine on till this coming week and will have it tuned will post up then.

I havent seen anyone post up a whole lot on weight savings they have had with their different exhaust. with such limited ones available Im curious what rough #s some were saving. Also, why no dyno #s? I would assume you guys that swapped exhaust put a tuner on of some sorts. post your #s...