somewhere here is a whole thread done by one of our engineering members. He had charts he did up in Excel showing gains/loses for each variation of sprocket change.... it is a good read... If I can find it I'll throw the link here. basically, you do hit a point of no gains either top speed or...
I'd give Twisted Throttle a call, you can browse the website,but I couldn't find the mounting brackets when I searched. I had the Givi set years ago, it was the only option and expensive (close or just above $1k for side mount and luggage), but it was a nice system, removed from bike quickly...
Our expert Marthy pops in here from time to time... maybe he can give some advice. A lot of us years ago got the PCV and shared two or three different maps, more so to cut out decel pops than any gains.
Previous owner may have gutted the exhaust (is it an exhaust and cat all in one)...
Can see a few videos of our famous Marthy exhausts on youtube
and a few with R6 header and slip-on (though R6 header needed a slight bend to fit)
A few options
buy a full exhaust system (two brothers had one, not sure about now)
cut the exhaust off and add an aftermarket slipon
or gut the existing exhaust.
Not safe to ride at all!
The tire is held on by air pressure... you try to ride it and that tire comes off, you'll have more than just a flat tire to replace...
how many miles, have you sync'd the throttle bodies ever? That simple adjustment effects idle and might cause something like this.. but I'm no mechanic, Marthy is our resident expert on all things engines :)
https://www.600cc.org/threads/how-to-sync-throttle-bodies-on-the-fz6r.15991/
See
https://www.600cc.org/threads/center-stand-vs-rear-stand.30116/post-424482
looks like years ago it was a no go... but who knows... maybe with a bit of mods it will work.
https://jalopnik.com/motorcycle-parts-seller-bikebandit-has-stolen-646-000-1848823954?fbclid=IwAR1cKDafsTNZ3R6ISDDHz4ONeNwp6onnMltpTc1nvmo86F3AY0A9ctpH6qA
Just passing it along
All I can say is, search this forum thru and thru, lots of info from when the bike first came out in 2009, but not so much these days. Don't worry about the year when looking, the only change ever done was the rear grab bar, went from a one piece to a two piece, so anything that fits FZ6R will...
https://www.t-rex-racing.com/2009-2017-FZ6R-Spool-Adapters-p/n67-9sa.htm
Someone had some additional slider, for like the clutch basket, but I can't find who had those. Between these spool adapters (above) and sliders though, I never had an issue with my foot rests or controls bending when I...
Definitely not stock... this is the tail on stock. integrated tail has turn signals/brakes/driving lights all in one. Also not DOT approved in most states, but most don't know/care as long as you have signals and brake lights.