A set crankshaft bearings with oil seals suitable for geared mopeds with Minarelli AM motors. The Naraku SKF crankshaft bearing set is equipped with quality bearings from SKF and is for high-speed racing engines and as a quality replacement part. Set includes the SKF ball bearings with metal cage and increased clearance (C4). C4 bearings are typically used in motors for high-end purposes, where the demands on the quality of the components is high. However, these bearings can be installed in standard engines, but only return marginal benefits over C3 bearings. The enclosed seals for the crankshaft are temperature and petrol resistant.Shaft seals delivered will be either Corteco and / or Athena.