UMI chain uses the ultimate state of the art technology to ensure performance and
durability. All UMI O & X-Ring chains have solid rollers and bushings for longer wear
life and reinforced rollers for higher impact resistance. UMI O & X-Ring chains also have
a unique protruding bushing, designed to reduce kinking and extend O-Ring life. The
O & X-Ring helps to increase the performance of the chain and provide better sealing
to keep dirt out and lubrication in. UMI O-Ring chains are recommended for ATV’s and
motorcycles originally equipped with O & X-Ring chains or in extreme conditions where
standard chains do not perform as well. Available in regularO & X-Ring or Gold O &
X-Ring. UMI Standard chain is engineered for maximum durability at lower price. UMI
SH Heavy duty chain offers a full range of selection for Road,Off-Road and ATV. UMI
SRB chain features upgraded steel solid roller and bushing to remarkably reinforce its
toughness against rugged terrain riding SRB superior quality chain meet or exceed the
requirements for all motorcycle Road,MX and ATV.