The new OS MAX PBI (Pre Break-In) piston and sleeve set is designed to deliver optimal performance from the very first runs. Thanks to a factory pre-break-in process, the fit between the piston and sleeve is precisely optimized, reducing break-in time and making engine tuning easier.

This technology improves compression, smooth operation, and reliability while minimizing component wear. The result is better throttle response, more consistent power output, and increased engine longevity.

Key benefits:

• Reduced break-in time
• Optimized compression
• Easier tuning
• Improved reliability
• Consistent performance output