The Allen HDX 750 is a totally new All Hydraulic-Powered Riding Trowel. Packed with the punch of a 74HP Kubota Turbo Diesel, the HDX 750 is one of the most powerful and dependable riders on the market today. The low weight to horsepower ratio and reliable hydraulic components (including a patented automatic load sensing device) ensures a peak “on the concrete” performance every time. The HDX 750 is the newest in the series of Hydra-Drive Extreme (HDX) Allen Riders.