Naraku 52.4mm Piston Ring Set – QMB139 / GY6 50cc – Part #100.86

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Replacement piston ring set for 52.4 mm Naraku performance pistons used in QMB139 and GY6 50 cc four-stroke engines.Perfect for rebuilds or servicing Naraku big-bore kits, this uni versal 52.4 mm ring set restores compression, reduces blow-by, and ensures consistent performance. Features: Genuine Naraku Performance replacement rings Fits 52.4 mm Naraku pistons (100 cc big-bore kits) Compatible with QMB139 / GY6 50 / 139QMB / 139QMA engines High-quality cast-iron rings for excellent sealing and longevity Includes: top compression ring, secondary ring, and oil control ring Specifications: Bore Size: 52.4 mm Type: 3-ring design (1 top, 1 secondary, 1 oil ring) Fits 100 cc Naraku and other 52.4 mm QMB kits Compatibility: QMB139 50 cc 4-stroke engines Show more