
The PROX forged piston (ref. 01.7355.B) is designed for the preparation and refurbishment of Cross engines requiring an OEM-compatible part. Made from forged aluminum, it features a "flat with hollow" design suitable for the modern combustion chambers of 4-stroke single-cylinder engines. The surface and machining adhere to original specifications for easy installation during an engine rebuild.
Key features:
This piston is intended for the specified displacements and meets the restoration tolerances. Before installation, check the cylinder bore, piston-cylinder clearance, and compatibility with ring sets and clips. Compatible notably with BETA RR 350 4T RACING (2024), BETA RR 350 4T (2024), and BETA RR 350 4T ENDURO RACING (2019) models.