RDLN High-Speed Gear Set (17/49) – GY6 50cc / 139QMB 1-gallon long-lasting bore that can be
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Description
RDLN High Speed Gear Set (17 49) – GY6 50cc 139QMB 1 gallon long lasting bore that can be long lasting bore that can be honed and oversized if needed Pre lube: Lightly oil piston rings and cylinder walls with 2 stroke oil before assembly to prevent dry starts SKU: 1200 1283 Is your 50cc 139QMB engine revving at its limit without a higher top speed