Since the 300 is new I thought I'd make a thread documenting the more popular farkle categories as they're released.
Just something I thought I'd throw together for other riders and myself to keep on top of what options are :)

If anyone has any items to add to this list just ping me/reply and I'll document them up. If you have a review then I'll link it.

Items compatible with the NewGen 250:
Clip Ons, Rear Sets, Levers

Items for the 300:

Frame Guards/Sliders/Etc:
Kawasaki OEM Engine/Cowling Guard - Item #99994-0355
Shogun No Cut Frame Sliders: http://www.moto911.com/product_info.php?cPath=1_11_627&products_id=1364
Yoshimura Chasis Protector Kit: https://www.yoshimura-rd.com/p-5096-chassis-protector-kit-ninja-300-2013.aspx

Fender Eliminators:
Targa: http://targa1.com/IntoSite/Manufacturer/Kawasaki/FenderKits/22-472%20EX300%20Ninja%202013%2007-4312B-C.htm
Competition Werks: www.competitionwerkes.com/products/Kawasaki/2013/Ninja300/fender-eliminator-kit-1K300
Yoshimura: http://www.yoshimura-rd.com/p-5091-fender-eliminator-kit.aspx

Wind Shields:
Kawasaki OEM Touring Screen - Item #99994-0356

Integrated/LED Brake Lights:
CustomLED (Coming Soon) - http://www.customled.com/products/integrators/2013_Kawasaki_Ninja_300/2013_kawasaki_ninja_300.htm
"TunerXFactory" on Ebay - http://www.ebay.com/itm/LED-Integrated-Blinker-Taillight-KAWASAKI-NINJA300-NINJA250R-NINJA-300-250R-2013-/230970759583?pt=Motorcycles_Parts_Accessories&fits=Year%3A2013%7CMake%3AKawasaki%7CModel%3ANinja%7CSubmodel%3A300&hash=item35c6ee199f&vxp=mtr

HID Kits:
BKMoto Kit - http://bkmoto.com/index.php?route=product/product&path=18_45&product_id=110

Seats/Cowls:
Kawasaki OEM Cowl - Item #99994-0354-777
* Ebony: 99994-0354-H8
* White: 99994-0354-15S
* Red: 99994-0354-15I
Corbin Seats - http://www.corbin.com/kawasaki/kn313fr.shtml

Turn Signals:
See Fender Eliminators, most sets have rear turn signal options included

Fairings/Cowlings:
SharkSkinz - http://sharkskinz.com/ninja300.aspx
Hot Bodies - http://www.hotbodiesracing.com/en/prod_522_race_bodywork_kawasaki_2013_ninja_300
Catalyst - http://catalystracingcomposites.com/c-326595-listed-by-bike-kawasaki.html

Here are the cowl part numbers from Kawi:

Ebony: 99994-0354-H8
White: 99994-0354-15S
Red: 99994-0354-15I

Please note those are for the full kit.

Shogun and Yoshumura make frame sliders.

Shogun and Yoshumura make frame sliders.

Added to the list, thanks :)

Integrated LED Brake light :http://www.superbrightleds.com/cat/car-strobe-modules/filter/Base,1157,1,41:

Looks more like a bulb replacement, which won't have quite the same advantages but good find :)

It's been many months and Hotbodies STILL has "Coming Soon" on their 300 undertail. :(

Looks more like a bulb replacement, which won't have quite the same advantages but good find :)

OK, so what you are looking for is an integrated system which includes running light, brake light as well as turn signals ? This would be to replace the standard style of individual turn signals altogether?

Example of an integrated tail light:
http://www.customled.com/products/integrators/integrators.htm

Example of an integrated tail light:
http://www.customled.com/products/integrators/integrators.htm

Gotcha Chone, good site to be aware of, thanks for sending.......

Added CustomLED's coming-soon brakes and the aftermarket fairings I am aware of :)

An Ebayer with a nice integrated tailight...new this date

http://www.ebay.com/itm/LED-Integrated-Blinker-Taillight-KAWASAKI-NINJA300-NINJA250R-NINJA-300-250R-2013-/230970759583?pt=Motorcycles_Parts_Accessories&fits=Year%3A2013%7CMake%3AKawasaki%7CModel%3ANinja%7CSubmodel%3A300&hash=item35c6ee199f&vxp=mtr

I didn't know exactly where to ask this, but is the new gen 250 seat compatible with the 300 seat?

I'm 99% sure it isn't Antiant, sorry :(

Damn, thanks. :/