The 520ERVT builds on the concept of the original motocross chain (without o-ring) by adding the benefits of the x-ring.
The X-Ring keeps the chain lubricated, limits the entry of dirt and mud between the side plates, and has only 4 contact points, reducing friction compared to the traditional O-Ring chain.
Reduced weight and increased chain durability.
Thanks to material optimization, the 520ERVT is now 2% lighter and has a 15% longer lifespan, while maintaining the same tensile strength.