Dunlop Geomax AT82 Motorcycle Front Tyre - 90/100-21 StandardDunlop Geomax AT82 Motorcycle Front Tyre 90 100 21 Standard Unlike motocross, where track conditions remain fairly consistent allowing riders to choose hard, intermediate or soft terrain tyres to suit conditions off road riders and racers can encounter wildly varying terrain over the course of a race or out for a weekend ride. New front tread pattern design increases grip and predictability under load. New rear pattern provides increased drive grip