PROX offers you this original-type piston designed for 350cc BETA engines. With a diameter of 88 mm and a ring design, it offers a good balance between performance, torque and reliability.

Of superior quality, it perfectly replaces the original piston without modification. Its design allows a slight increase in compression ratio, which improves engine torque, especially at low and mid-range speeds.

This model features two lubrication points to optimize lubrication and ensure longer cylinder and piston life. The skirt has also been reworked to promote gas flow and improve overall engine efficiency.

This piston is therefore ideal for optimizing the top end of the engine while maintaining excellent reliability.

Available sizes:

A: 87.96 mm

B: 87.97 mm

C: 87.98 mm

Allow about 15 days for this type of piston.

Fits on:

BETA RR 350 4T ENDURO 2014

BETA RR 350 4T ENDURO 2013

BETA RR 350 4T ENDURO 2012

BETA RR 350 4T ENDURO 2011

BETA RR 350 4T ENDURO RACING 2019

BETA RR 350 4T ENDURO RACING 2013

BETA RR 350 4T ENDURO RACING 2012