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M3K - New Medial Pro M3K - JP Racing Long Stroke 5 port, Black anodized Crankcase, Double ringed "knife type" camrod, Waterproof front ball bearings, High speed rear ball bearing, Reinforced and Ventilated crankcase, light "light hardblack" treated crankshaft, Special carb with extra vents. (Novarossi / JP Modified)