F800GS Yoshimura R77 exhaust before and after

UPDATE : TBH I don't recommend this model. It failed within 2 years, the sleeve broke on the weld over a couple of inches, and the noise became very annoying. I removed it, thought about fixing it, rode with the stock exhaust a full season and actually liked it a lot more than the "fart" can noise. Then I decided to go with an Akrapovic Titanium. And it's totally worth the price difference. I regret going the "cheap" route initially. The Akra sounds so much better than this, it's not even funny. The Yosh is loud, but just sounds like a giant fart can. Some may like it, even love it, but I got tired of it, particularly on long trips with the aluminum cases (it's louder). But if you just want to make loud noises, please, go ahead and get one...

This is a before and after sound check of my 2013 F800GS... The exhaust is a Yoshimura R77 Street slip on. There's a DB killer in the kit but I didn't install it for this test...