New lightweight steel 520 conversion kits by Drive Systems USA. These kits are over 2 pounds lighter than our 530 kits but still maintain great strength and longevity.

Each kit includes:

• one Chromoly Steel AFAM Front Sprocket
• one Black Heat-Treated Steel Rear Sprocket
• DID 520 ZVM2 series Gold X'ring chain (cut to the correct length)
• one Rivet Style Master Link