Dunlop MX34 Geomax Rear 120/80-19 Dirt Bike Tire. Whether you're competing professionally or hitting the trails on the weekends, you can trust the MX34 to provide the stability and control you need to perform at your best. New carcass material improves damping and absorption which allows the MX34 to maintain its performance up to 30% longer.A new rubber compound increases traction while maintaining durability. Front and rear tires feature a new Progressive Cornering Block Technology (PCBT Advanced) to improve grip while cornering and enhance feel and absorption. A new rear pattern with a 11% taller and 44% wider center block increases traction and control. An optimized front pattern provides enhanced traction and a better mud evacuation system. Dunlop MX 34 Rear Dirt Bike Tire.