These lightweight mini-works racing chains were developed from the same advanced alloy material and manufacturing technology as the 520MXZ. Both 420 and 428MXZ Racing Chains are the strongest in their class giving you the best value-performance rating of any MX Racing Chain in the world today.
- For use on 125cc max off-road bikes only.
- Tensile strength - 5800lbs
- Link type - clip
If your motorcycle came with an original o-ring or x-ring chain DO NOT replace it with a standard chain, you MUST replace it with a chain of equal or greater strength.