The WISECO 2T GP Series Piston Kit - Ø58.00mm (manufacturer part number W881M05800A) is aimed at motocross riders looking for a robust and reliable part for engine restoration or preparation. Designed by Wiseco, a global leader in forged pistons for nearly 50 years, this kit meets the standards of longevity and strength required for demanding off-road conditions.

• Type: Forged 2T piston, GP series
• Actual Diameter: Ø 57.94 mm (nominal Ø58.00 mm)
• Oversize: Letter A — STD
• Compression: Standard
• Material: Forged aluminum, for good wear and heat resistance

This kit is designed to optimize the performance of the engine block while maintaining the original compression characteristics. Its forged design offers better resistance to the repeated stresses typical of motocross sessions and successive jumps. Ideal for serious maintenance or a piston/cylinder overhaul after wear.

Check the bore and compatibility with your engine before installation. Examples of frequently equipped models:

• KTM 150 SX (2022 - 150 cm3)
• KTM 150 SX (2021 - 150 cm3)
• KTM 150 SX (2020 - 150 cm3)

For any operation, follow the manufacturer's recommendations and the machining of the cylinder to ensure optimal break-in and lifespan.