I accidentally bought the same kit from Riva Racing, and only needed one, so my loss is your gain. This kit has never been opened is is 100% brand new. If your going to increase HP and boost and replace the stock cam in your Sea-doo then you need this kit. You can safely rev you motor to 9600 RPM with these springs and Titanium clips. SeaDoo 4TEC Dual Valve Spring & Titanium Retainers 185/215/255/260/300 SD-10001K.The item "Sea-Doo 4TEC 9600RPM Dual Valve Springs & Titanium Retainers 260 / 300 SD-10001K" is in sale since Thursday, December 24, 2020. This item is in the category "eBay Motors\Parts & Accessories\Personal Watercraft Parts\Engines, Impellers & Component\Impellers & Components". The seller is "tgugliuzza" and is located in Las Vegas, Nevada. This item can be shipped to United States.