where to buy....

[RichD]

what does the lightweight flywheel do for you?
not that i need to be spending money on that right now haha just curious

The stock flywheel is heavy like a steam engine flywheel.
The motor makes good power, but it is released slowly because the flywheels weight/inertia.
This is safe.  The general public doesn't have throttle control skill, so an engine that makes gentle speed transitions keeps them from getting in over their head.

Once you get used to the bike and use its full power a lot, you'll want to get more out of it...
The light flywheel allows the motor to rev up fast. 
It can be a problem in a turn with minimal traction...
leading to a "highside" crash if you're not careful.

But it also lets it spool up like a two-stroke dirtbike,
will wheelie with ease, and accelerates much better than a stock flywheel.

The opposite side of the coin is true too: When you let off the gas the motor will slow quicker.
This gives quicker compression braking. 
This also can lead to problems: 
If you are in a steep turn and chop the throttle shut you could skid the rear tire...

If you have good throttle and clutch technique, and you have good feel for traction, it is worth it.

[Duc L'Smart]

If you have good throttle and clutch technique

...and a slipper clutch

[RichD]

...and a slipper clutch

...Well that WILL keep you from pitching yourself in the ditch letting off  the throttle...

There is no fix for being ham-handed ON the throttle...  (unless you're going to buy a 1098R with traction control, of course)

[a13bpilot]

Best 200 bucks you will spend! Abused the bike like a red headed step child today . To be honest I really dont notice it until I get above 6000 RPM. 6K to rev limit is just a flick of the wrist. Can't wait to get it on the track!!! 

[RichD]

Best 200 bucks you will spend!...

If anyone here had ANY IDEA how hard it was for me to talk you into spending  that $200...
I think it took an honest year  (maybe more)

Glad you're happy with it!