Please be inform, current DID 520ERV3 G&G to be upgraded to New DID 520ERV7 G&G.
Higher Tensile Strength
Due to increase the hardness of the inner plates and thicken pins, the new 520ERV7 has 3% higher tensile strength
Longer Chain Life!
Due to increased X-ring retention and durability, 520ERV7 have greatly improved sealing performance. As a result, the new chains have 13% higher wear resistance.
520ERV7 has lower friction due to improved seal ring. As a result, the new chain can minimize power loss.
Index: Standard Chain =100
♦ Current schedule shipment : November 2019
♦ Note : Master links are not interchangeable with actual ERV3 master links