EK CHAIN 420SR 420 Universal ChainRef : EKC00710A / 1129896004

EK 420SR 420 Drive Chain — Manufacturer Ref: 420SR-STL 90 SPJ

Designed by EK CHAIN for small engines and versatile uses, the 420SR is a strong chain with a pitch of 420 that emphasizes longevity and flexibility. The SR series benefits from a specific heat treatment of the plates: as a result, the chain maintains its flexibility even after many kilometers and better withstands repeated stresses. Ideal for installation on compact chassis, it adapts to urban machines, quads, motocross bikes, and lightweight roadsters.

• Number of links: 90
• Pitch: 420
• Color: Steel / Steel
• Relative lifespan: 200 (reference 100 links)
• Indicative weight: 0.75 kg / 100 links

Installation, maintenance, and tensioning must be carried out in accordance with the manufacturer's recommendations and the adjustment of your sprocket/crown kit. This chain is recommended for preparations and replacements on 50 cc engines and other small displacements — among the common compatible models are RIEJU MRT 50 SM (2025), FANTIC XM 50 PERFORMANCE (2025), and BETA RR 50 MOTARD (2025).

Whether you are looking for a robust chain for light off-road, city riding, or fun on the road, the EK 420SR offers an interesting compromise between durability and ease of use.