
EK CHAIN 520SROZ2 O-Ring 520 — a transmission chain designed for riders seeking a robust and versatile solution. This 520 in steel/steel finish incorporates O-rings that protect the internal grease and limit the intrusion of impurities for reduced maintenance. Its drilled design slightly reduces weight while maintaining a construction of thermally treated steel alloys, true to EK's craftsmanship.
Versatile, it adapts well to trails, roadsters, sports bikes, and off-road machines: ideal for both road and off-road sessions. It will suit a wide range of engine sizes and uses — common examples include: GAS GAS SM 700, KTM 690 SMC R, YAMAHA YZ 450 F. Installation on standard sprocket and crown, tension control and lubrication recommended to maximise its longevity.
Strong at startup, reliable at high revs, the EK 520SROZ2 remains a safe bet for those wanting a high-performance transmission without excessive maintenance complications.