Jamis DXT A3 DUAL SPORTSCross Hybrid Bicycle for Long Distance Fitness Rides: DXT A3 DUAL SPORTS The DXT A3 Dual Sport is equipped with a Suntour NVX DS suspension fork, which provides 75mm of travel to help absorb bumps and shocks on rough terrain. The bike also has Tektro MD 280 mechanical disc brakes, which provide excellent stopping power in all weather conditions. The DXT A3 Dual Sport comes with a Shimano 21 speed drivetrain, which provides a wide range of gears for