Price is for one single Top End Kit for a Stock KTM 105SX/Husqvarna TC105/GASGAS MC105 only. - -This Top End Kit includes: -– one new Vertex 105 Piston (22991B) -– one new ring -– one new wrist pin -– one new wrist pin bearing -– two new wrist pin retaining clips -– one OEM o-ring (07702300251) -– one OEM outer head o-ring (0770800021) -– one OEM inner head o-ring (0770590020) -– one OEM .50mm base gasket (47230035050) -– one OEM 85/105/112 sealing element. (47237091000) We highly recommend changing the sealing element every time you remove the cylinder - -  - -