
This part being universal, it may require adaptations
EK 520SRX2 QX-Ring Transmission Chain — manufacturer reference: 520SRX2-STL 122 MLJ. Designed by EK CHAIN, this 520SRX2 is aimed at demanding riders looking for a robust and versatile chain for quads, urban use, motocross, or roadsters.
The SRX series focuses on a good performance/price ratio, featuring a steel construction and QX-Ring seals that minimize lubricant loss and protect the rollers from dust and debris. Delivered with 122 links, it can be shortened and riveted to fit most 520 transmissions.
Easy installation for replacement in the workshop or on the track: check the tension, align the sprocket and crown, and lubricate according to your use to maximize longevity. Notable compatibilities: GAS GAS SM 700 (2026), KTM 690 SMC R (2026), YAMAHA YZ 450 F (2026).
Durable and easy to maintain, the EK 520SRX2 is a reliable option for those who want to keep their transmission healthy and responsive, whether for urban rides, on the road, or in technical terrain.