New VXP Opti-2016 MOD 38mm Piston 

for Zenoah G320 G340 RC PUM - 32cc & 34cc Gas Engine

Featuring - Optimised Booster Port and Further Lightened Piston Wall by Internal Milling ( requested by my customers as they had to spend the whole nite with a dremel to thin down the piston walls )

You can use it with MOD Engines from DDM, OBR as they do not MOD a piston like I do.

This is for 32cc Gas engine which uses thicker Piston Pin, Needle Bearings and Bigger Crankshaft so not suitable for 23, 26, 29, 30.5cc engines.