Go to
CheapCycleParts.com. You can buy every OEM part for the 08 Ninja 250. You just have to use the selection boxes to select your model. Select EX250J8F (2008) as your model. The rear seat cowl can be purchased on there for $78 bucks.

(pre-painted to match your bike) You can also get all the other plastics pre-painted. Here is the
Green Cowl. There shipping is reasonable too! I figured up like 350 after shipping to replace the lower on one side and one side of the tail. the front piece is like $284 and the tail was $43 last time I checked. Shipping was like $15. I hope you all find this useful. 