





WISECO 4T Forged Series Piston Kit - ø78.00 mm designed for Cross applications. Wiseco forged pistons are recommended for original replacement or as part of an engine preparation to optimize performance and reliability. Made from forged aluminum, with meticulous finishing and rigorous dimensional control: these are the hallmarks that have established Wiseco's global reputation for nearly 50 years.
Designed to withstand the demands of off-road riding, this piston is aimed at riders who want a robust part to rebuild an engine after wear or to prepare a competition machine. Particularly suitable for recent 250 cm3 models such as KTM 250 EXC-F SIX DAYS (2023), HUSQVARNA FE 250 (2023), and GAS GAS EC 250 F (2023). Choose this kit for a serious overhaul of the bore and a clean installation with the provided segments.