PROX offers you this original-type piston designed for 300cc BETA engines. With a diameter of 72 mm and a bi-segment design, it offers a good balance between performance, torque and reliability.

Superior quality, it perfectly replaces the original piston without modification. Its design allows for a slightly higher compression ratio (37.9), 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 : 71,94 mm

B: 71, 95 mm

C: 71, 96 mm

Allow about 15 days for this type of piston.

Fits on:

BETA RR 300 2T ENDURO 2019

BETA RR 300 2T ENDURO 2018

BETA XTRAINER 300 2T 2021

BETA XTRAINER 300 2T 2020

BETA XTRAINER 300 2T 2019

BETA XTRAINER 300 2T 2018

BETA RR 300 2T ENDURO RACING 2019

BETA RR 300 2T ENDURO RACING 2018

BETA RR 300 2T 2023

BETA RR 300 2T 2022

BETA RR 300 2T 2021

BETA RR 300 2T 2020

BETA RR 300 2T RACING 2024

BETA RR 300 2T RACING 2023

BETA RR 300 2T RACING 2022

BETA RR 300 2T RACING 2021

BETA RR 300 2T RACING 2020

BETA RX 300 2T 2023

BETA RX 300 2T 2022

BETA RX 300 2T 2021

BETA XTRAINER 300 2T 2021

BETA RR 300 2T 2021