EK CHAIN 420SR 420 Universal ChainRef : EKC00734A / 1129896028

EK 420SR 420 Drive Chain – Manufacturer Ref: 420SR-STL 138 SPJ

The EK 420SR is a drive chain designed for urban and light off-road use. Part of the SR series, it maintains its flexibility even after long mileage thanks to a specific design of the plates. These plates undergo a heat treatment aimed at enhancing their resistance to wear and transmission stresses.

• Pitch: 420
• Number of links: 138
• Color: steel / steel
• Weight: 0.75 kg for 100 links
• Life expectancy index (100 links): 200

Designed for small displacements and lightweight machines, this chain is suitable for roadsters, quads, motocross bikes, and urban applications. It is aimed at riders looking for a robust and reliable solution to connect the sprocket and the crown, while facilitating maintenance and adjustment of the rolling gear.

Common applications (examples): RIEJU MRT 50 SM (2025), FANTIC XM 50 PERFORMANCE (2025), BETA RR 50 MOTARD (2025). For optimal installation, check the number of links and the pitch before installation and adjust the length according to the geometry of the swingarm.