KTM 250 XC-W SIX Days [2026] - cast pistons

PROX cast pistons for the KTM 250 XC-W SIX Days 2026

The PROX cast piston is assigned to the KTM 250 XC-W SIX Days from 2026. Its special alloy is designed to minimize friction and therefore support the reliability of the piston. Development is carried out with careful coordination to provide a suitable piston for the intended use.

Function and execution

As a cast aluminum piston, this component combines the specified design with a specific design of the piston skirt. The MoS2 coating on the skirt is a technical feature of the piston. The standard piston compression makes selection easier based on the existing engine design.

Technical data

• Brand: PROX
• Piston Type: Cast
• Material: aluminum
• Piston compression: standard
• Diameter Ø: 66.36 mm
• Letter oversize: C
• Oversize: +0.02
• Stroke: 2T
• Specificity: Domed piston / MoS2 coating of the skirt

Vehicle assignment

The PROX cast piston is intended for the KTM 250 XC-W SIX Days, built in 2026. The selection should be based on this complete vehicle assignment as well as the listed dimensions and design.