All D.I.D. premium chains are stocked in 100 foot rolls and any length can be cut upon request.

520 ER SERIES EXCLUSIVE RACING CHAIN

• Exclusively designed for motorcycle racing
• High performance, lightweight and low friction chain provides the  winning edge in World Class Competition
• Features gold color plates 
• Non-Oring sealed for less weight and drag 

  520 ERT2

• Works great on all 125cc-450cc Motocross/Supermoto applications
• Average tensile strength 8,100 lb.
• 3% bigger pin diameter and 5% lighter than the former ERT