FYI - For those of you looking for a 13T front sprocket for your 250r.
13T Front Sprocket (520) for '08-12 Ninja 250r just added to
http://www.pit-bull.com.
You'll need to add the item to your basket to choose the size.
Price is $24.95 + s&h.
http://www.pit-bull.com/mm5/merchant...ode=SPkawasaki