An oring chain has two orings between the outer plates and the inner link, keeping dirt and grime from the inner roller The two orings make the chain about 1/8" wider than a stock chain, therefore a 530 oring chain will not fit between the gearbox and the inner primary case I have seen a lot of Commando inner primary cases where the stock chain has rubbed against the case when theEK 4 SRO Sport Series ORing Chain $6199 $9099 0 EK 428 SROZ Sport Series ORing Chain $6299 $ 1 Sunstar 5 SSR Standard Sealed ORing Chain $9299 $9499 1 BikeMaster 525 BMOR Series ORing Chain $9499 $159 2 RK 630 GSV XW ORing ChainORing Clip Chain Necklace and Choker, Customisable Worn Multiple Ways, Chain Necklace, Industrial, Statement Design
D I D 530 100 D I D Racing Chain Standard Non O Ring Chains Summit Racing
