
EK CHAIN 520SROZ2 O-Ring 520 (Manufacturer's ref: 520SROZ2-STL 110 MLJ) — 520 transmission chain designed for motorcycles and quads seeking a balance between performance, durability, and price. From EK's SRO series, this O-Ring chain maintains the manufacturer's expertise while remaining accessible.
Designed to fit a wide range of motorcycle universes — from trail to sport, including enduro, roadster, and vintage — this 520 SRO is mounted on transmissions where reliability and ease of maintenance are expected. The O-Rings limit lubricant loss between plates and rollers while protecting the joints from dust and debris.
Examples of compatible motorcycles: GAS GAS SM 700 (2026), KTM 690 SMC R (2026), YAMAHA YZ 450 F (2026). Check the number of links and the sprocket/crown compatibility before installation. Manufacturer reference: 520SROZ2-STL 110 MLJ.