The DID 520ERVT is a lightweight 520 X‑Ring drive chain that brings sealed-chain durability to a motocross-style performance design. Its X‑Ring sealing reduces friction and helps keep lubrication in while blocking dirt and mud.
The DID 520ERVT drive chain updates the traditional motocross (non O‑ring) chain concept by adding the benefits of an advanced X‑Ring seal. This design helps keep lubrication sealed inside the chain while limiting dirt and mud from entering between the side plates—so you get smoother power delivery and longer service life in harsh off-road conditions.
Thanks to the X‑Ring’s reduced contact points versus a standard O‑ring, friction is lowered for more efficient drivetrain performance. DID also optimised materials to make the chain around 2% lighter while extending lifespan by approximately 15%, all while maintaining strong tensile strength—an excellent choice for riders who want durability without sacrificing responsiveness.
