Prox with bearing kit Crankshaft oil sealsRef : PRO00167A / 1125657

PROX Crankshaft Bearing and Seal Kit (Manufacturer Ref: 23.CBS73022): the essential component for a clean and reliable bottom-end rebuild. Designed to replace both worn bearings and seals, this kit restores the sealing and clearances of the crankshaft to minimize oil leaks and unwanted vibrations during motocross outings.

• Complete kit: bearings + crankshaft seals
• Treated bearings to reduce friction and promote smooth operation
• Suitable for maintenance interventions and restorations after wear or engine disassembly

Easy to integrate during an engine overhaul, this PROX kit is aimed at riders and mechanics who want to restore their machine to a condition close to original specifications without seeking modifications. Ideal for motocross and enduro practices where the sealing and precision of the crankshaft are crucial for performance and reliability.

Notable compatibilities: particularly suitable for the BETA models listed below — BETA XTRAINER 300 2T (2026), BETA XTRAINER 250 2T (2025), and BETA RR 300 2T RACING (2024). Check the reference before installation to ensure compatibility with your engine.