
This part being universal, it may require adaptations
EK 520H Transmission Chain — manufacturer reference 520H-STL 128 SPJ. Designed by EK CHAIN according to the demanding standards of EK Japan, this 520H chain is aimed at riders looking for a reliable part to equip their primary transmission for road, cross, quad, or urban use.
This 520H chain offers a construction designed to withstand the usual stresses of transmission: tension, bending around the sprocket and crown, and repeated loads. Ideal for setups where longevity and standard compatibility are prioritized, it is suitable for models such as the TRIUMPH SPEED 400 (2025), the ZONTES 125Z2 (2025), or the KTM 125 DUKE ABS (2025), as well as many quads and enduro/urban machines.
Before installation, check the condition of the sprocket and crown, respect the torque specifications, and perform an initial lubrication according to the manufacturer's recommendations to ensure even wear.