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

WÖSSNER forged piston kit for Beta RR 390 4 T Race

The WÖSSNER forged piston kit is tailored to the Beta RR 390 4 T Race built in 2025-2026. The forged aluminum piston, together with the included rings, piston pin and retaining clips, forms a coordinated piston set kit for the upper engine range.

Technical features

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

Scope of delivery

The piston set includes pistons, rings, piston pins and retaining clips. This means that the components intended for the piston set are put together together.

Vehicle assignment

The kit fits the Beta RR 390 4 T Race, built in 2025-2026. The assignment refers to this complete model and year of manufacture range.

Selection note

The piston diameter of 87.96 mm, the bore diameter of 88.00 mm and the compression ratio of 12.7:1 are particularly relevant for the selection. The version with standard piston compression and Oversize STD supports a clear assignment within the vehicle application mentioned.