DID 428 Standard Roller Chain Accessory Top ventilation port within the

Top ventilation port within the frame

the helmet is all set for long outings

M420 - For street bikes up to 80cc that did not come with an O-ring or heavy-duty chain as standard equipment

Designed to be a direct fit to OEM master cylinders

taped seams in waterproof and windproof materials

DID 428 Standard Roller Chain Accessory Top ventilation port within theDID 428 Standard Roller Chain Features: Low cost, high quality solid roller chain Quad staked pin riveting Special alloy steel construction Extended riveted bushing anti kink design Pre stretched at factory For models originally equipped with non O Ring chain Made in Japan Specifications: Pin Length: 16. 7 mm Roller Diameter: 8. 5 mm Plate Inner: 1. 5 mm Thickness Outer: 1. 5 mm Weight (100 Links): 0. 84 kg Tensile Strength: 4230 lbs. Wear Resistance