KTM 250 XC-W SIX Days [2026] - 2-stroke piston kit Pro-Lite series ø66.40mm

WISECO 2-stroke piston kit Pro-Lite series ø66.40mm

The forged WISECO piston kit from the Pro-Lite series is designed for the 2-stroke engine of the KTM 250 XC-W SIX Days from 2026. The design combines an aluminum piston with a standard piston compression and is tailored to the specified vehicle application.

Function and execution

As a piston for a 2-stroke engine, the component forms a central part of the upper engine area. The forged construction and the defined oversize C support the selection for appropriate repairs or renewals within the specified specification.

Technical data

• Brand: WISECO
• Series: Pro-Lite
• Piston Type: Forged
• Material: aluminum
• Piston compression: standard
• Diameter Ø: 66.36 mm
• Letter oversize: C
• Oversize: +0.02
• Stroke: 2T

Vehicle assignment

The piston kit is intended for the KTM 250 XC-W SIX Days, built in 2026. The assignment refers to this model and this complete year range.

Selection note

Before ordering, please compare the information on diameter, oversize and 2-stroke version with the required engine specification. WISECO develops, forges and machines its pistons at its manufacturing facility in Mentor, Ohio, USA.