420MRU
General Street Use
U-Ring ChainUltra Thin Sealed Chain for Daily Use
MRU series features RK’s only technology of Ultra Thin Seal, U-Rings, where the thickness of seal is less than 50% of the common seal, make it possible to design a Sealed Chain with the weight of a Non-Sealed Chain.
4 times longer chain life than non-sealed 420 chain.
Minimum maintenance needed, excellent total cost performance for business usage.
