Vertex 53.94mm Top End Piston Kit - Yamaha YZ/WR125 2005-2021, XX125 2021, XE125 2021-2022 Brake Accessories The Apico Performance Clutch Kit

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Vertex 53.94mm Top End Piston Kit - Yamaha YZ/WR125 2005-2021, XX125 2021, XE125 2021-2022 Brake Accessories The Apico Performance Clutch KitThe Vertex Top End Piston Kit For Yamaha Fantic YZ WR125 2005 2021, XX125 2021, XE125 2021 2022 53. 94MM is part of the latest collection from Vertex. Features: All pistons are heat treated with a T 5 hardening and tempering cycle All piston skirts are coated with a high tech Molybdenum Disulphite coating for faster break in time and increased piston life Cast piston kits are gravity cast aluminum alloy with 18% silicone content, which produces an