Order Includes: 1 x Exhaust Valve, 1 x Outer Valve Spring, 1 x Valve Stem Seal, 2 x Valve Cotter. Compatible with Yamaha models: YFZ450RSE 2009-2013. Part Number: Exhaust Valve: 5TA-12121-00-00, Outer Valve Spring: 5TA-12114-00-00, Valve Stem Seal: 33M-12119-00-00, Valve Cotter: 1AA-12118-00-00. We strongly suggest comparing the posted picture to the unit(s) that needs to be replaced..
