EK Motor Sport 520 SRO Series O-Ring Chain - 106 Links , Chain Type: 520, Chain Length: 106, Color: Natural, Chain Application: All

I bought this chain last year for my bike and so far it has held up with no issues! Just a warning that it comes with the clip on type so you would need to add the rivet connecting link with it which is an additional 5 to 6 dollars so it's not that bad! Would recommend this for a ninja 250r 2008.Here's the link for the rivet chain.http://www.amazon.com/gp/product/B000WK6EGC/ref=oh_aui_detailpage_o02_s00?ie=UTF8&psc=1

Dollar for dollar, best chain you can get! I have ran there Xring 520 on 130 hp snomo powered quads and never broke one, I have run Oring up to 80 HP powered turbo quads. Never a chain failure !