Beta RR 390 4 T X-PRO [2025-2026] - Piston Kit

PROX piston kit for the Beta RR 390 4 T X-PRO

The PROX piston kit is assigned to the Beta RR 390 4 T X-PRO in the full year range 2025-2026. The set contains the essential piston components for replacement in the engine and is suitable for targeted selection based on the specified technical characteristics.

Technical execution

• Material: aluminum
• Piston Type: Forged
• Piston compression: standard
• Diameter Ø: 87,970 mm
• Letter oversize: B
• Oversize: +0.01
• Compression ratio: 12.5:1
• Stroke: 4T
• Specificity: Flat with hollow

The combination of the diameter Ø 87,970 mm, the oversize value +0.01 and the letter B supports the precise demarcation when selecting the product. The compression ratio of 12.5:1 and the standard piston compression are further technical characteristics of this piston.

Vehicle assignment

The piston kit is assigned to the Beta RR 390 4 T X-PRO, built in 2025-2026. Before ordering, please compare the vehicle name and the complete year of manufacture with your motorcycle.

Scope of delivery

• Piston
• Piston rings
• Piston pin
• circlips

The scope of delivery is put together as a kit and therefore includes a selection of the piston components mentioned.