Beta RR 390 4 T X-PRO [2025-2026] - WÖSSNER forged piston kit

WÖSSNER forged piston kit for Beta RR 390 4 T X-PRO

The WÖSSNER forged piston kit is assigned to the Beta RR 390 4 T X-PRO from 2025 to 2026. The piston is made of aluminum and is a forged design. The standard piston compression and compression ratio of 12.7:1 correspond to the stated specifications of this kit.

Technical features

• Piston Type: Forged
• Material: aluminum
• Piston compression: standard
• Piston diameter: 87.96 mm
• Bore diameter: 88.00 mm
• Letter oversize: A
• Oversize: STD
• Compression ratio: 12.7:1
• Rings Quantity: Set
• Stroke: 4T

Scope of delivery

The piston kit contains the piston, piston rings, piston pin and retaining clips. This means that the components belonging to the kit are clearly summarized as a set.

Vehicle assignment

Suitable for the Beta RR 390 4 T X-PRO, built between 2025 and 2026. The assignment refers to this vehicle and the complete year range mentioned.

Selection note

The piston diameter of 87.96 mm, the bore diameter of 88.00 mm and the STD marking are particularly relevant for the selection. Please compare these technical values ​​with the intended motor before ordering.