hello alex, just for your info, I bought a malossi 34.8544 piston with 25mm compression height and 134 dome radius (circa- measured with the comprator on the cnc machine). It weights 74g, but using the barikit pin which has the conical shape of the hole, I dropped it to 71,4g. This is a 5,6 grams gain over the barikit kit. Not bad for a 50cc
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