DID · Part
Designed around DID’s patented X-Ring seal technology, the ERV7 is positioned as a top-tier racing chain option for riders who want a purpose-built component for competition.
It is also noted as being used by many factory teams worldwide.
The 520 ERV7 is built around DID’s patented X-Ring seal technology. DID credits the ERV7’s design and use of this seal system as a key element in making it a high-performing racing chain, with durability improvements tied directly to the X-Ring design.
This is attributed to stronger inner side plates and thicker pins, targeting the demands of racing applications where consistent chain performance is a priority.
With increased X-Ring durability, DID reports the ERV7 achieves a 13% increase in wear resistance.
It is also noted as being utilized by many factory teams worldwide.
| The 520 ERV7 chain boasts a 3% higher tensile strength due to stronger inner side plates and thicker pins. |
| Due to increased X-Ring durability, the ERV7 sees a 13% wear resistance increase. |
| 520ERV7 is the top-of-the-line racing chain for all types of motorcycle racing, on and off road. |
| Incredible design and utilization of D.I.D's patented X-Ring seal technology makes the ERV7 a top performing racing chain available. |
| Utilized by many factory teams worldwide. |
As listed for this part in DID's product information.
