Rotax 250 SWM Trial [1978-1983] - forged pistons

WISECO forged pistons for Rotax 250 SWM Trial

The WISECO forged piston is designed for the engine of the Rotax 250 SWM Trial in the full year range from 1978 to 1983. As a piston with standard compression, it is suitable for the intended engine design, provided the dimensions specified match the existing cylinder bore.

Design and technical data

• Piston Type: Forged
• Material: aluminum
• Piston compression: standard
• Diameter Ø: 72.50 mm
• Letter oversize: 050
• Oversize: +0.05

The combination of forged design, aluminum and standard compression describes the technical design of this piston. The diameter of 72.50 mm as well as the marking 050 and the oversize of +0.05 are used to specifically select the appropriate cylinder processing or the existing dimension.

Vehicle assignment

Suitable for the Rotax 250 SWM Trial, built between 1978 and 1983. Before making a selection, the specified piston diameter, the oversize and the existing cylinder bore must be compared. This makes it possible to ensure that the dimensional design of the forged piston fits the respective engine overhaul.

Selection note

This piston is assigned to the oversize version +0.05 with the letter 050. The standard compression remains as a key feature of the piston design.