
EK 520SROZ2 O-Ring Transmission Chain — strong and versatile, this EK CHAIN is aimed at demanding riders, from off-road to roadster. Designed with O-Ring seals to retain lubricant between the links, it combines durability with ease of maintenance. The SRO series features optimised perforation that lightens the overall weight without compromising mechanical strength, and thermally treated steel alloys ensure controlled wear and precision manufacturing by EK.
Versatile, it adapts to Quad, Cross, Enduro, Supermoto, Trail/Adventure, Touring, Sport, Roadster, Urban, and Vintage environments. Among common applications, it can be found on machines such as GAS GAS SM 700, KTM 690 SMC R, or YAMAHA YZ 450 F when a 520 pitch is required. Ideal for those who want a robust, easy-to-maintain chain ready to withstand everyday stresses as well as more intense outings.