[Alex]

RE: vibration; here are some quotes from the various reviews of the 300 found online:

http://www.motorcycledaily.com/2012/...-300-part-two/

That’s because this motor may represent the most improvement in a consumer product since the horse and carriage lost the horse. The new motor not only makes a lot more power (about a 20 percent bump), it’s also way smoother (thanks to the rubber mounting and improved counterbalancer, I assume) and much more flexible and easy to use. Gone is the revving to 7000 rpm to get rolling or the endless shifting to keep the little zinger on the boil. Gone is the wheezing at high speeds when you try to make a pass in sixth gear. Say “so long” to lugging the motor or bouncing around on the suspension as you downshift mid-corner so you don’t fall too far behind your buddies.

The motor is good enough that the 300 can be ridden like a regular motorcycle. Riding with fast traffic on divided freeways is no longer a frantic, nerve-wracking affair. With a GPS-verified speed of at least 103 mph (stupid headwind!) and enough grunt to pass cars at 80-plus mph in top gear, you’re king of the road, if you’re an aggressive sort. If you’re not, you can cruise along in sixth gear at the speed limit and see a mere 7000 rpm on the tach. It’s almost relaxing if you’re accustomed to the omnipresent weedwhacker exhaust note of the 250R.

http://www.motorcycle-usa.com/157/14...irst-Ride.aspx

While we praise the Ninja 300’s new found power, EFI and slipper clutch, one our favorite characteristics of the bike is its reduction of vibration. New rubber front engine mounts result in a dramatic improvement of the 250’s buzzy nature. It may be unheralded compared to the other changes, but eliminates our biggest complaint in the previous bike. It also gives the 300 a solid, more stable feel.

http://www.motorcycle.com/manufactur...iew-91429.html

Riding old and new back-to-back also reveals another trait: the new bike is noticeably smoother than its predecessor thanks to rubber engine mounts keeping vibes at bay. The 250 used solid mounts, resulting in numb hands at higher rpm as the engine buzzed away.

This is what your bike should feel like.