Avon Tyres Cobra Chrome AV91 Front Tire - 130/60B21 2120017Snakeskin sidewall effect complements the Cobra logo and tread design; a truly unique custom look Advanced Variable Belt Density (A VBD) rear construction uses a densely wrapped belt in the center of the tire for stability, wear and mileage; belt is less dense on the shoulder for a huge, compliant contact patch (most sizes) Force Following Grooves (FFG) for reduced tire noise, increased wear resistance, improved stability and better resistance to