The Vertex Top End Piston Kit For KTM/Husqvarna/GAS EXC-F250 2017-2023, FE250 2017-2023, EC250F 2021-2023 COMPR 12,8:1 77.97MM is part of the latest collection from Vertex. Features: All pistons are heat-treated with a T-5 hardening and tempering cycle...