Crankshaft bearing set NARAKU SKF, FKM Premium C4 polyamide for Kymco, SYM vertical engine

A high-quality Naraku SKF crankshaft bearing set including premium FKM shaft seals, suitable for Kymco and SYM vehicles with upright engines such as Kymco Fever KCA 50, KB 50, DJ 50, Curio 50 CX or Fever ZXII 50. Also suitable for Honda Dio 50, Meteorit KB50, SYM Flash / Fancy and Daelim S-Five scooters.
The bearing set includes one SKF crankshaft bearing each for the left and right side with C4 bearing tolerance and two FKM crankshaft sealing rings. The polymer plastic cage with higher elasticity reduces inherent friction: the bearings run cooler and more freely. However, such bearings are more sensitive to improperly adjusted engines. The polyamide plastic cage must not be exposed to temperatures above 120°C on a permanent basis. For this reason, the bearings should not be installed in engines with catalytic converters.
Please note! When changing the crankshaft, always use new bearings and oil seals! Always install the half-open bearing side facing the crankshaft.
FPM, FKM, Viton®: Behind these abbreviations or names is the identical basic material – fluororubber. FKM is the abbreviation for fluoroelastomers according to the American ASTM standard. Viton®, on the other hand, is a trademark of DuPont Performance Elastomers. In our range, all fluororubber items are designated with the abbreviation FKM.