Welcome and congrats on the bike!I'm new here and I am happy to have found your forum...
I picked up an '07 650R from a buddy...
The bike is more of a sport-touring bike; the riding position is way too upright to fall in to the sport category. (Though you can have serious fun on this bike at the track.)... So, I am going to have the oil changed and probably have new tires put on. Is there a tire that you recommend for highway AND twistys? I know this is a race bike but I see a lot of commuters on them. Should I get a power commander and a slip exhaust? As far as the power commander, I am mostly concerned about the front end coming up and thought it could be mapped out better. I would also like better shock absorption. New levers and foot pegs too. I don't like searching for them so much and I like longer rides too so I need something with more support that are easier to find.
Now for the fun stuff. What kind of accessories do you recommend? I have seen dark smoke screens that I like but I really don't know what's nice for this bike. I see alot of after market stuff out there and I'm anxious to get moving. Sorry for the novel but thanks in advance for any feedback
Tire-wise I've been using the Dunlop Q3. It's pretty sticky, works great on track and in the twisties, but sucks in the cold. (I've got videos of the 650 on track and also my crash, which was due to the tire, on my YouTube page.) My next tire on the 650 is going to be a Bridgestone S21. I've got it on my ZX6R and it's lasted significantly longer than the Q3 ever did on the 650. Typically I get 2500-3000 miles out of a Q3 (YMMV) I've got about 4500 miles on the S21 and there's still plenty of life left in it. And trust me, the ZX6R is way harder on the tires than the 650.
Do your homework on the tires and find out which tire works best for your riding conditions. I found out the Q3 was rated for a minimum temperature(s) of 60F air and 60F tarmac. Anything below that and the tire starts losing grip. (I crashed on it with air and tarmac temps of 48F/48F and can vouch for that it was like riding on ice at those temps.)
As for the windscreen, I'd look at a clear Zero Gravity double bubble. When you're in full tuck going down the back straight you'll appreciate the clear screen. I've got the light smoked color and would trade it in a second for the clear. (It's just too dark when you combine the light smoke and a tinted visor.)
Keep something in mind with the aftermarket parts. They're for you only. You'll never get your money out of them should you sell the bike because when it's all said and done you'll still have an '07 650. Personally I was looking to upgrade my 2012 650 for the track and quickly came to the conclusion that I should save that money and buy a sportbike. The cost of a PC, exhaust, and new front suspension made for a significant down payment on my ZX6R. Now my 650 has a garage buddy!!!
I did keep the 650 because I found that it's very comfy on long rides. My bike is pretty much stock and for a guy who has had two spinal surgeries and a complete knee reconstruction I find I can do 1000 miles on the thing in a day and be ready to ride the next. (Again, YMMV.)