New-style thinner piston ring (.8mm thick) for Zenoah 32mm engines.
Thinner ring allows for reduced friction, higher revs, and more power.
Fits 32mm bore piston. Zenoah part # T2071-41210 and 51244-6801 FG part # 07309/09
Part on the Zenoah G230RC G240RC G231PUH G231PUM
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